<span style="color: #008080"> 1</span> <!DOCTYPE html>
<span style="color: #008080"> 2</span> <html>
<span style="color: #008080"> 3</span> <head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<span style="color: #008080"> 4</span> <title>HTML5烟花燃放特效代码</title>
<span style="color: #008080"> 5</span>
<span style="color: #008080"> 6</span> <style>
<span style="color: #008080"> 7</span> html,body{height:100%;margin:0;padding:0<span style="color: #000000">}
</span><span style="color: #008080"> 8</span> ul,li{text-indent:0;text-decoration:none;margin:0;padding:0<span style="color: #000000">}
</span><span style="color: #008080"> 9</span> img{border:0<span style="color: #000000">}
</span><span style="color: #008080"> 10</span> body{background-color:#000;color:#999;font:100%/18px helvetica, arial, sans-serif}
<span style="color: #008080"> 11</span> canvas{cursor:crosshair;display:block;left:0;position:absolute;top:0;z-index:20<span style="color: #000000">}
</span><span style="color: #008080"> 12</span> *<span style="color: #000000">{
</span><span style="color: #008080"> 13</span> <span style="color: #000000"> margin: 0px;
</span><span style="color: #008080"> 14</span> <span style="color: #000000"> padding: 0px;
</span><span style="color: #008080"> 15</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 16</span> <span style="color: #000000"> #bg_Img{
</span><span style="color: #008080"> 17</span> <span style="color: #000000"> width: 1920px;
</span><span style="color: #008080"> 18</span> <span style="color: #000000"> height: 1500px;
</span><span style="color: #008080"> 19</span> <span style="color: #000000"> border: 1px solid transparent;
</span><span style="color: #008080"> 20</span> background: url("start.gif"<span style="color: #000000">) repeat;
</span><span style="color: #008080"> 21</span> text-<span style="color: #000000">align: center;
</span><span style="color: #008080"> 22</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 23</span> <span style="color: #000000"> ul{
</span><span style="color: #008080"> 24</span> <span style="color: #000000"> width: 5555px;
</span><span style="color: #008080"> 25</span> <span style="color: #000000"> height: 200px;
</span><span style="color: #008080"> 26</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 27</span> <span style="color: #000000"> li{
</span><span style="color: #008080"> 28</span> font: 120px/190px "楷体";
<span style="color: #008080"> 29</span> <span style="color: #000000"> color: white;
</span><span style="color: #008080"> 30</span> text-<span style="color: #000000">shadow: 5px 10px 10px 10px;
</span><span style="color: #008080"> 31</span> list-<span style="color: #000000">style: none;
</span><span style="color: #008080"> 32</span> <span style="color: #0000ff">float</span><span style="color: #000000">: left;
</span><span style="color: #008080"> 33</span> <span style="color: #000000"> display: none;
</span><span style="color: #008080"> 34</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 35</span> <span style="color: #000000"> #text_bd{
</span><span style="color: #008080"> 36</span> <span style="color: #000000"> width: 600px;
</span><span style="color: #008080"> 37</span> <span style="color: #000000"> height: 200px;
</span><span style="color: #008080"> 38</span> <span style="color: #000000"> border: 5px solid transparent;
</span><span style="color: #008080"> 39</span> margin-<span style="color: #000000">left: 200px;
</span><span style="color: #008080"> 40</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 41</span> <span style="color: #000000"> #mouse_click{
</span><span style="color: #008080"> 42</span> <span style="color: #000000"> margin: 0px auto;
</span><span style="color: #008080"> 43</span> text-<span style="color: #000000">align: center;
</span><span style="color: #008080"> 44</span> <span style="color: #000000"> color: white;
</span><span style="color: #008080"> 45</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 46</span> </style>
<span style="color: #008080"> 47</span>
<span style="color: #008080"> 48</span> </head>
<span style="color: #008080"> 49</span> <body>
<span style="color: #008080"> 50</span> <div id="bg_Img">
<span style="color: #008080"> 51</span> <div id="text_bd">
<span style="color: #008080"> 52</span> <ul>
<span style="color: #008080"> 53</span> <li>O(∩_∩)O~~</li>
<span style="color: #008080"> 54</span> <li>同</li>
<span style="color: #008080"> 55</span> <li>学</li>
<span style="color: #008080"> 56</span> <li>们</li>
<span style="color: #008080"> 57</span> <li>节</li>
<span style="color: #008080"> 58</span> <li>日</li>
<span style="color: #008080"> 59</span> <li>快</li>
<span style="color: #008080"> 60</span> <li>乐</li>
<span style="color: #008080"> 61</span> <li>~~</li>
<span style="color: #008080"> 62</span> </ul>
<span style="color: #008080"> 63</span> </div>
<span style="color: #008080"> 64</span> <div id="mouse_click">鼠标点击释放烟花效果</div>
<span style="color: #008080"> 65</span> </div>
<span style="color: #008080"> 66</span> <script type="text/javascript" src="jquery-3.1.1.js"></script>
<span style="color: #008080"> 67</span> <script type="text/javascript">
<span style="color: #008080"> 68</span> <span style="color: #0000ff">var</span> aLi=document.querySelectorAll("li"<span style="color: #000000">);
</span><span style="color: #008080"> 69</span> setInterval(a,1000<span style="color: #000000">);
</span><span style="color: #008080"> 70</span> setInterval(b,2000<span style="color: #000000">);
</span><span style="color: #008080"> 71</span> setInterval(c,3000<span style="color: #000000">);
</span><span style="color: #008080"> 72</span> setInterval(d,4000<span style="color: #000000">);
</span><span style="color: #008080"> 73</span> setInterval(e,5000<span style="color: #000000">);
</span><span style="color: #008080"> 74</span> setInterval(f,6000<span style="color: #000000">);
</span><span style="color: #008080"> 75</span> setInterval(g,7000<span style="color: #000000">);
</span><span style="color: #008080"> 76</span> setInterval(h,8000<span style="color: #000000">);
</span><span style="color: #008080"> 77</span> <span style="color: #0000ff">function</span><span style="color: #000000"> a() {
</span><span style="color: #008080"> 78</span> aLi[0].style.display = "block"
<span style="color: #008080"> 79</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 80</span> <span style="color: #0000ff">function</span><span style="color: #000000"> b() {
</span><span style="color: #008080"> 81</span> aLi[1].style.display = "block"
<span style="color: #008080"> 82</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 83</span> <span style="color: #0000ff">function</span><span style="color: #000000"> c() {
</span><span style="color: #008080"> 84</span> aLi[2].style.display = "block"
<span style="color: #008080"> 85</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 86</span> <span style="color: #0000ff">function</span><span style="color: #000000"> d() {
</span><span style="color: #008080"> 87</span> aLi[3].style.display = "block"
<span style="color: #008080"> 88</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 89</span> <span style="color: #0000ff">function</span><span style="color: #000000"> e() {
</span><span style="color: #008080"> 90</span> aLi[4].style.display = "block"
<span style="color: #008080"> 91</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 92</span> <span style="color: #0000ff">function</span><span style="color: #000000"> f() {
</span><span style="color: #008080"> 93</span> aLi[5].style.display = "block"
<span style="color: #008080"> 94</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 95</span> <span style="color: #0000ff">function</span><span style="color: #000000"> g() {
</span><span style="color: #008080"> 96</span> aLi[6].style.display = "block"
<span style="color: #008080"> 97</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 98</span> <span style="color: #0000ff">function</span><span style="color: #000000"> h() {
</span><span style="color: #008080"> 99</span> aLi[7].style.display = "block"
<span style="color: #008080">100</span> <span style="color: #000000"> }
</span><span style="color: #008080">101</span> $(<span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">102</span> <span style="color: #0000ff">var</span> Fireworks = <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">103</span> <span style="color: #0000ff">var</span> self = <span style="color: #0000ff">this</span><span style="color: #000000">;
</span><span style="color: #008080">104</span> <span style="color: #0000ff">var</span> rand = <span style="color: #0000ff">function</span>(rMi, rMa){<span style="color: #0000ff">return</span> ~~((Math.random()*(rMa-rMi+1))+<span style="color: #000000">rMi);}
</span><span style="color: #008080">105</span> <span style="color: #0000ff">var</span> hitTest = <span style="color: #0000ff">function</span>(x1, y1, w1, h1, x2, y2, w2, h2){<span style="color: #0000ff">return</span> !(x1 + w1 < x2 || x2 + w2 < x1 || y1 + h1 < y2 || y2 + h2 <<span style="color: #000000"> y1);};
</span><span style="color: #008080">106</span> window.requestAnimFrame=<span style="color: #0000ff">function</span>(){<span style="color: #0000ff">return</span> window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame||window.oRequestAnimationFrame||window.msRequestAnimationFrame||<span style="color: #0000ff">function</span>(a){window.setTimeout(a,1E3/60)}}();
<span style="color: #008080">107</span>
<span style="color: #008080">108</span> self.init = <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">109</span> self.canvas = document.createElement('canvas'<span style="color: #000000">);
</span><span style="color: #008080">110</span> self.canvas.width = self.cw =<span style="color: #000000"> $(window).innerWidth();
</span><span style="color: #008080">111</span> self.canvas.height = self.ch =<span style="color: #000000"> $(window).innerHeight();
</span><span style="color: #008080">112</span> self.particles =<span style="color: #000000"> [];
</span><span style="color: #008080">113</span> self.partCount = 150<span style="color: #000000">;
</span><span style="color: #008080">114</span> self.fireworks =<span style="color: #000000"> [];
</span><span style="color: #008080">115</span> self.mx = self.cw/2;
<span style="color: #008080">116</span> self.my = self.ch/2;
<span style="color: #008080">117</span> self.currentHue = 30<span style="color: #000000">;
</span><span style="color: #008080">118</span> self.partSpeed = 5<span style="color: #000000">;
</span><span style="color: #008080">119</span> self.partSpeedVariance = 10<span style="color: #000000">;
</span><span style="color: #008080">120</span> self.partWind = 50<span style="color: #000000">;
</span><span style="color: #008080">121</span> self.partFriction = 5<span style="color: #000000">;
</span><span style="color: #008080">122</span> self.partGravity = 1<span style="color: #000000">;
</span><span style="color: #008080">123</span> self.hueMin = 0<span style="color: #000000">;
</span><span style="color: #008080">124</span> self.hueMax = 360<span style="color: #000000">;
</span><span style="color: #008080">125</span> self.fworkSpeed = 4<span style="color: #000000">;
</span><span style="color: #008080">126</span> self.fworkAccel = 10<span style="color: #000000">;
</span><span style="color: #008080">127</span> self.hueVariance = 30<span style="color: #000000">;
</span><span style="color: #008080">128</span> self.flickerDensity = 25<span style="color: #000000">;
</span><span style="color: #008080">129</span> self.showShockwave = <span style="color: #0000ff">true</span><span style="color: #000000">;
</span><span style="color: #008080">130</span> self.showTarget = <span style="color: #0000ff">false</span><span style="color: #000000">;
</span><span style="color: #008080">131</span> self.clearAlpha = 25<span style="color: #000000">;
</span><span style="color: #008080">132</span>
<span style="color: #008080">133</span> <span style="color: #000000"> $(document.body).append(self.canvas);
</span><span style="color: #008080">134</span> self.ctx = self.canvas.getContext('2d'<span style="color: #000000">);
</span><span style="color: #008080">135</span> self.ctx.lineCap = 'round'<span style="color: #000000">;
</span><span style="color: #008080">136</span> self.ctx.lineJoin = 'round'<span style="color: #000000">;
</span><span style="color: #008080">137</span> self.lineWidth = 1<span style="color: #000000">;
</span><span style="color: #008080">138</span> <span style="color: #000000"> self.bindEvents();
</span><span style="color: #008080">139</span> <span style="color: #000000"> self.canvasLoop();
</span><span style="color: #008080">140</span>
<span style="color: #008080">141</span> self.canvas.onselectstart = <span style="color: #0000ff">function</span><span style="color: #000000">() {
</span><span style="color: #008080">142</span> <span style="color: #0000ff">return</span> <span style="color: #0000ff">false</span><span style="color: #000000">;
</span><span style="color: #008080">143</span> <span style="color: #000000"> };
</span><span style="color: #008080">144</span> <span style="color: #000000"> };
</span><span style="color: #008080">145</span>
<span style="color: #008080">146</span> self.createParticles = <span style="color: #0000ff">function</span><span style="color: #000000">(x,y, hue){
</span><span style="color: #008080">147</span> <span style="color: #0000ff">var</span> countdown =<span style="color: #000000"> self.partCount;
</span><span style="color: #008080">148</span> <span style="color: #0000ff">while</span>(countdown--<span style="color: #000000">){
</span><span style="color: #008080">149</span> <span style="color: #0000ff">var</span> newParticle =<span style="color: #000000"> {
</span><span style="color: #008080">150</span> <span style="color: #000000"> x: x,
</span><span style="color: #008080">151</span> <span style="color: #000000"> y: y,
</span><span style="color: #008080">152</span> <span style="color: #000000"> coordLast: [
</span><span style="color: #008080">153</span> <span style="color: #000000"> {x: x, y: y},
</span><span style="color: #008080">154</span> <span style="color: #000000"> {x: x, y: y},
</span><span style="color: #008080">155</span> <span style="color: #000000"> {x: x, y: y}
</span><span style="color: #008080">156</span> <span style="color: #000000"> ],
</span><span style="color: #008080">157</span> angle: rand(0, 360<span style="color: #000000">),
</span><span style="color: #008080">158</span> speed: rand(((self.partSpeed - self.partSpeedVariance) <= 0) ? 1 : self.partSpeed - self.partSpeedVariance, (self.partSpeed +<span style="color: #000000"> self.partSpeedVariance)),
</span><span style="color: #008080">159</span> friction: 1 - self.partFriction/100,
<span style="color: #008080">160</span> gravity: self.partGravity/2,
<span style="color: #008080">161</span> hue: rand(hue-self.hueVariance, hue+<span style="color: #000000">self.hueVariance),
</span><span style="color: #008080">162</span> brightness: rand(50, 80<span style="color: #000000">),
</span><span style="color: #008080">163</span> alpha: rand(40,100)/100,
<span style="color: #008080">164</span> decay: rand(10, 50)/1000,
<span style="color: #008080">165</span> wind: (rand(0, self.partWind) - (self.partWind/2))/25<span style="color: #000000">,
</span><span style="color: #008080">166</span> <span style="color: #000000"> lineWidth: self.lineWidth
</span><span style="color: #008080">167</span> <span style="color: #000000"> };
</span><span style="color: #008080">168</span> <span style="color: #000000"> self.particles.push(newParticle);
</span><span style="color: #008080">169</span> <span style="color: #000000"> }
</span><span style="color: #008080">170</span> <span style="color: #000000"> };
</span><span style="color: #008080">171</span>
<span style="color: #008080">172</span>
<span style="color: #008080">173</span> self.updateParticles = <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">174</span> <span style="color: #0000ff">var</span> i =<span style="color: #000000"> self.particles.length;
</span><span style="color: #008080">175</span> <span style="color: #0000ff">while</span>(i--<span style="color: #000000">){
</span><span style="color: #008080">176</span> <span style="color: #0000ff">var</span> p =<span style="color: #000000"> self.particles[i];
</span><span style="color: #008080">177</span> <span style="color: #0000ff">var</span> radians = p.angle * Math.PI / 180<span style="color: #000000">;
</span><span style="color: #008080">178</span> <span style="color: #0000ff">var</span> vx = Math.cos(radians) *<span style="color: #000000"> p.speed;
</span><span style="color: #008080">179</span> <span style="color: #0000ff">var</span> vy = Math.sin(radians) *<span style="color: #000000"> p.speed;
</span><span style="color: #008080">180</span> p.speed *=<span style="color: #000000"> p.friction;
</span><span style="color: #008080">181</span>
<span style="color: #008080">182</span> p.coordLast[2].x = p.coordLast[1<span style="color: #000000">].x;
</span><span style="color: #008080">183</span> p.coordLast[2].y = p.coordLast[1<span style="color: #000000">].y;
</span><span style="color: #008080">184</span> p.coordLast[1].x = p.coordLast[0<span style="color: #000000">].x;
</span><span style="color: #008080">185</span> p.coordLast[1].y = p.coordLast[0<span style="color: #000000">].y;
</span><span style="color: #008080">186</span> p.coordLast[0].x =<span style="color: #000000"> p.x;
</span><span style="color: #008080">187</span> p.coordLast[0].y =<span style="color: #000000"> p.y;
</span><span style="color: #008080">188</span>
<span style="color: #008080">189</span> p.x +=<span style="color: #000000"> vx;
</span><span style="color: #008080">190</span> p.y +=<span style="color: #000000"> vy;
</span><span style="color: #008080">191</span> p.y +=<span style="color: #000000"> p.gravity;
</span><span style="color: #008080">192</span>
<span style="color: #008080">193</span> p.angle +=<span style="color: #000000"> p.wind;
</span><span style="color: #008080">194</span> p.alpha -=<span style="color: #000000"> p.decay;
</span><span style="color: #008080">195</span>
<span style="color: #008080">196</span> <span style="color: #0000ff">if</span>(!hitTest(0,0,self.cw,self.ch,p.x-p.radius, p.y-p.radius, p.radius*2, p.radius*2) || p.alpha < .05<span style="color: #000000">){
</span><span style="color: #008080">197</span> self.particles.splice(i, 1<span style="color: #000000">);
</span><span style="color: #008080">198</span> <span style="color: #000000"> }
</span><span style="color: #008080">199</span> <span style="color: #000000"> };
</span><span style="color: #008080">200</span> <span style="color: #000000"> };
</span><span style="color: #008080">201</span>
<span style="color: #008080">202</span> self.drawParticles = <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">203</span> <span style="color: #0000ff">var</span> i =<span style="color: #000000"> self.particles.length;
</span><span style="color: #008080">204</span> <span style="color: #0000ff">while</span>(i--<span style="color: #000000">){
</span><span style="color: #008080">205</span> <span style="color: #0000ff">var</span> p =<span style="color: #000000"> self.particles[i];
</span><span style="color: #008080">206</span>
<span style="color: #008080">207</span> <span style="color: #0000ff">var</span> coordRand = (rand(1,3)-1<span style="color: #000000">);
</span><span style="color: #008080">208</span> <span style="color: #000000"> self.ctx.beginPath();
</span><span style="color: #008080">209</span> <span style="color: #000000"> self.ctx.moveTo(Math.round(p.coordLast[coordRand].x), Math.round(p.coordLast[coordRand].y));
</span><span style="color: #008080">210</span> <span style="color: #000000"> self.ctx.lineTo(Math.round(p.x), Math.round(p.y));
</span><span style="color: #008080">211</span> <span style="color: #000000"> self.ctx.closePath();
</span><span style="color: #008080">212</span> self.ctx.strokeStyle = 'hsla('+p.hue+', 100%, '+p.brightness+'%, '+p.alpha+')'<span style="color: #000000">;
</span><span style="color: #008080">213</span> <span style="color: #000000"> self.ctx.stroke();
</span><span style="color: #008080">214</span>
<span style="color: #008080">215</span> <span style="color: #0000ff">if</span>(self.flickerDensity > 0<span style="color: #000000">){
</span><span style="color: #008080">216</span> <span style="color: #0000ff">var</span> inverseDensity = 50 -<span style="color: #000000"> self.flickerDensity;
</span><span style="color: #008080">217</span> <span style="color: #0000ff">if</span>(rand(0, inverseDensity) ===<span style="color: #000000"> inverseDensity){
</span><span style="color: #008080">218</span> <span style="color: #000000"> self.ctx.beginPath();
</span><span style="color: #008080">219</span> self.ctx.arc(Math.round(p.x), Math.round(p.y), rand(p.lineWidth,p.lineWidth+3)/2, 0, Math.PI*2, false)
<span style="color: #008080">220</span> <span style="color: #000000"> self.ctx.closePath();
</span><span style="color: #008080">221</span> <span style="color: #0000ff">var</span> randAlpha = rand(50,100)/100;
<span style="color: #008080">222</span> self.ctx.fillStyle = 'hsla('+p.hue+', 100%, '+p.brightness+'%, '+randAlpha+')'<span style="color: #000000">;
</span><span style="color: #008080">223</span> <span style="color: #000000"> self.ctx.fill();
</span><span style="color: #008080">224</span> <span style="color: #000000"> }
</span><span style="color: #008080">225</span> <span style="color: #000000"> }
</span><span style="color: #008080">226</span> <span style="color: #000000"> };
</span><span style="color: #008080">227</span> <span style="color: #000000"> };
</span><span style="color: #008080">228</span>
<span style="color: #008080">229</span>
<span style="color: #008080">230</span> self.createFireworks = <span style="color: #0000ff">function</span><span style="color: #000000">(startX, startY, targetX, targetY){
</span><span style="color: #008080">231</span> <span style="color: #0000ff">var</span> newFirework =<span style="color: #000000"> {
</span><span style="color: #008080">232</span> <span style="color: #000000"> x: startX,
</span><span style="color: #008080">233</span> <span style="color: #000000"> y: startY,
</span><span style="color: #008080">234</span> <span style="color: #000000"> startX: startX,
</span><span style="color: #008080">235</span> <span style="color: #000000"> startY: startY,
</span><span style="color: #008080">236</span> hitX: <span style="color: #0000ff">false</span><span style="color: #000000">,
</span><span style="color: #008080">237</span> hitY: <span style="color: #0000ff">false</span><span style="color: #000000">,
</span><span style="color: #008080">238</span> <span style="color: #000000"> coordLast: [
</span><span style="color: #008080">239</span> <span style="color: #000000"> {x: startX, y: startY},
</span><span style="color: #008080">240</span> <span style="color: #000000"> {x: startX, y: startY},
</span><span style="color: #008080">241</span> <span style="color: #000000"> {x: startX, y: startY}
</span><span style="color: #008080">242</span> <span style="color: #000000"> ],
</span><span style="color: #008080">243</span> <span style="color: #000000"> targetX: targetX,
</span><span style="color: #008080">244</span> <span style="color: #000000"> targetY: targetY,
</span><span style="color: #008080">245</span> <span style="color: #000000"> speed: self.fworkSpeed,
</span><span style="color: #008080">246</span> angle: Math.atan2(targetY - startY, targetX -<span style="color: #000000"> startX),
</span><span style="color: #008080">247</span> shockwaveAngle: Math.atan2(targetY - startY, targetX - startX)+(90*(Math.PI/180)),
<span style="color: #008080">248</span> acceleration: self.fworkAccel/100,
<span style="color: #008080">249</span> <span style="color: #000000"> hue: self.currentHue,
</span><span style="color: #008080">250</span> brightness: rand(50, 80<span style="color: #000000">),
</span><span style="color: #008080">251</span> alpha: rand(50,100)/100,
<span style="color: #008080">252</span> <span style="color: #000000"> lineWidth: self.lineWidth
</span><span style="color: #008080">253</span> <span style="color: #000000"> };
</span><span style="color: #008080">254</span> <span style="color: #000000"> self.fireworks.push(newFirework);
</span><span style="color: #008080">255</span>
<span style="color: #008080">256</span> <span style="color: #000000"> };
</span><span style="color: #008080">257</span>
<span style="color: #008080">258</span>
<span style="color: #008080">259</span> self.updateFireworks = <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">260</span> <span style="color: #0000ff">var</span> i =<span style="color: #000000"> self.fireworks.length;
</span><span style="color: #008080">261</span>
<span style="color: #008080">262</span> <span style="color: #0000ff">while</span>(i--<span style="color: #000000">){
</span><span style="color: #008080">263</span> <span style="color: #0000ff">var</span> f =<span style="color: #000000"> self.fireworks[i];
</span><span style="color: #008080">264</span> self.ctx.lineWidth =<span style="color: #000000"> f.lineWidth;
</span><span style="color: #008080">265</span>
<span style="color: #008080">266</span> vx = Math.cos(f.angle) *<span style="color: #000000"> f.speed,
</span><span style="color: #008080">267</span> vy = Math.sin(f.angle) *<span style="color: #000000"> f.speed;
</span><span style="color: #008080">268</span> f.speed *= 1 +<span style="color: #000000"> f.acceleration;
</span><span style="color: #008080">269</span> f.coordLast[2].x = f.coordLast[1<span style="color: #000000">].x;
</span><span style="color: #008080">270</span> f.coordLast[2].y = f.coordLast[1<span style="color: #000000">].y;
</span><span style="color: #008080">271</span> f.coordLast[1].x = f.coordLast[0<span style="color: #000000">].x;
</span><span style="color: #008080">272</span> f.coordLast[1].y = f.coordLast[0<span style="color: #000000">].y;
</span><span style="color: #008080">273</span> f.coordLast[0].x =<span style="color: #000000"> f.x;
</span><span style="color: #008080">274</span> f.coordLast[0].y =<span style="color: #000000"> f.y;
</span><span style="color: #008080">275</span>
<span style="color: #008080">276</span> <span style="color: #0000ff">if</span>(f.startX >=<span style="color: #000000"> f.targetX){
</span><span style="color: #008080">277</span> <span style="color: #0000ff">if</span>(f.x + vx <=<span style="color: #000000"> f.targetX){
</span><span style="color: #008080">278</span> f.x =<span style="color: #000000"> f.targetX;
</span><span style="color: #008080">279</span> f.hitX = <span style="color: #0000ff">true</span><span style="color: #000000">;
</span><span style="color: #008080">280</span> } <span style="color: #0000ff">else</span><span style="color: #000000"> {
</span><span style="color: #008080">281</span> f.x +=<span style="color: #000000"> vx;
</span><span style="color: #008080">282</span> <span style="color: #000000"> }
</span><span style="color: #008080">283</span> } <span style="color: #0000ff">else</span><span style="color: #000000"> {
</span><span style="color: #008080">284</span> <span style="color: #0000ff">if</span>(f.x + vx >=<span style="color: #000000"> f.targetX){
</span><span style="color: #008080">285</span> f.x =<span style="color: #000000"> f.targetX;
</span><span style="color: #008080">286</span> f.hitX = <span style="color: #0000ff">true</span><span style="color: #000000">;
</span><span style="color: #008080">287</span> } <span style="color: #0000ff">else</span><span style="color: #000000"> {
</span><span style="color: #008080">288</span> f.x +=<span style="color: #000000"> vx;
</span><span style="color: #008080">289</span> <span style="color: #000000"> }
</span><span style="color: #008080">290</span> <span style="color: #000000"> }
</span><span style="color: #008080">291</span>
<span style="color: #008080">292</span> <span style="color: #0000ff">if</span>(f.startY >=<span style="color: #000000"> f.targetY){
</span><span style="color: #008080">293</span> <span style="color: #0000ff">if</span>(f.y + vy <=<span style="color: #000000"> f.targetY){
</span><span style="color: #008080">294</span> f.y =<span style="color: #000000"> f.targetY;
</span><span style="color: #008080">295</span> f.hitY = <span style="color: #0000ff">true</span><span style="color: #000000">;
</span><span style="color: #008080">296</span> } <span style="color: #0000ff">else</span><span style="color: #000000"> {
</span><span style="color: #008080">297</span> f.y +=<span style="color: #000000"> vy;
</span><span style="color: #008080">298</span> <span style="color: #000000"> }
</span><span style="color: #008080">299</span> } <span style="color: #0000ff">else</span><span style="color: #000000"> {
</span><span style="color: #008080">300</span> <span style="color: #0000ff">if</span>(f.y + vy >=<span style="color: #000000"> f.targetY){
</span><span style="color: #008080">301</span> f.y =<span style="color: #000000"> f.targetY;
</span><span style="color: #008080">302</span> f.hitY = <span style="color: #0000ff">true</span><span style="color: #000000">;
</span><span style="color: #008080">303</span> } <span style="color: #0000ff">else</span><span style="color: #000000"> {
</span><span style="color: #008080">304</span> f.y +=<span style="color: #000000"> vy;
</span><span style="color: #008080">305</span> <span style="color: #000000"> }
</span><span style="color: #008080">306</span> <span style="color: #000000"> }
</span><span style="color: #008080">307</span>
<span style="color: #008080">308</span> <span style="color: #0000ff">if</span>(f.hitX &&<span style="color: #000000"> f.hitY){
</span><span style="color: #008080">309</span> <span style="color: #000000"> self.createParticles(f.targetX, f.targetY, f.hue);
</span><span style="color: #008080">310</span> self.fireworks.splice(i, 1<span style="color: #000000">);
</span><span style="color: #008080">311</span>
<span style="color: #008080">312</span> <span style="color: #000000"> }
</span><span style="color: #008080">313</span> <span style="color: #000000"> };
</span><span style="color: #008080">314</span> <span style="color: #000000"> };
</span><span style="color: #008080">315</span>
<span style="color: #008080">316</span> self.drawFireworks = <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">317</span> <span style="color: #0000ff">var</span> i =<span style="color: #000000"> self.fireworks.length;
</span><span style="color: #008080">318</span> self.ctx.globalCompositeOperation = 'lighter'<span style="color: #000000">;
</span><span style="color: #008080">319</span> <span style="color: #0000ff">while</span>(i--<span style="color: #000000">){
</span><span style="color: #008080">320</span> <span style="color: #0000ff">var</span> f =<span style="color: #000000"> self.fireworks[i];
</span><span style="color: #008080">321</span> self.ctx.lineWidth =<span style="color: #000000"> f.lineWidth;
</span><span style="color: #008080">322</span>
<span style="color: #008080">323</span> <span style="color: #0000ff">var</span> coordRand = (rand(1,3)-1<span style="color: #000000">);
</span><span style="color: #008080">324</span> <span style="color: #000000"> self.ctx.beginPath();
</span><span style="color: #008080">325</span> <span style="color: #000000"> self.ctx.moveTo(Math.round(f.coordLast[coordRand].x), Math.round(f.coordLast[coordRand].y));
</span><span style="color: #008080">326</span> <span style="color: #000000"> self.ctx.lineTo(Math.round(f.x), Math.round(f.y));
</span><span style="color: #008080">327</span> <span style="color: #000000"> self.ctx.closePath();
</span><span style="color: #008080">328</span> self.ctx.strokeStyle = 'hsla('+f.hue+', 100%, '+f.brightness+'%, '+f.alpha+')'<span style="color: #000000">;
</span><span style="color: #008080">329</span> <span style="color: #000000"> self.ctx.stroke();
</span><span style="color: #008080">330</span>
<span style="color: #008080">331</span> <span style="color: #0000ff">if</span><span style="color: #000000">(self.showTarget){
</span><span style="color: #008080">332</span> <span style="color: #000000"> self.ctx.save();
</span><span style="color: #008080">333</span> <span style="color: #000000"> self.ctx.beginPath();
</span><span style="color: #008080">334</span> self.ctx.arc(Math.round(f.targetX), Math.round(f.targetY), rand(1,8), 0, Math.PI*2, <span style="color: #0000ff">false</span><span style="color: #000000">)
</span><span style="color: #008080">335</span> <span style="color: #000000"> self.ctx.closePath();
</span><span style="color: #008080">336</span> self.ctx.lineWidth = 1<span style="color: #000000">;
</span><span style="color: #008080">337</span> <span style="color: #000000"> self.ctx.stroke();
</span><span style="color: #008080">338</span> <span style="color: #000000"> self.ctx.restore();
</span><span style="color: #008080">339</span> <span style="color: #000000"> }
</span><span style="color: #008080">340</span>
<span style="color: #008080">341</span> <span style="color: #0000ff">if</span><span style="color: #000000">(self.showShockwave){
</span><span style="color: #008080">342</span> <span style="color: #000000"> self.ctx.save();
</span><span style="color: #008080">343</span> <span style="color: #000000"> self.ctx.translate(Math.round(f.x), Math.round(f.y));
</span><span style="color: #008080">344</span> <span style="color: #000000"> self.ctx.rotate(f.shockwaveAngle);
</span><span style="color: #008080">345</span> <span style="color: #000000"> self.ctx.beginPath();
</span><span style="color: #008080">346</span> self.ctx.arc(0, 0, 1*(f.speed/5), 0, Math.PI, true);
<span style="color: #008080">347</span> self.ctx.strokeStyle = 'hsla('+f.hue+', 100%, '+f.brightness+'%, '+rand(25, 60)/100+')';
<span style="color: #008080">348</span> self.ctx.lineWidth =<span style="color: #000000"> f.lineWidth;
</span><span style="color: #008080">349</span> <span style="color: #000000"> self.ctx.stroke();
</span><span style="color: #008080">350</span> <span style="color: #000000"> self.ctx.restore();
</span><span style="color: #008080">351</span> <span style="color: #000000"> }
</span><span style="color: #008080">352</span> <span style="color: #000000"> };
</span><span style="color: #008080">353</span> <span style="color: #000000"> };
</span><span style="color: #008080">354</span>
<span style="color: #008080">355</span> self.bindEvents = <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">356</span> $(window).on('resize', <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">357</span> <span style="color: #000000"> clearTimeout(self.timeout);
</span><span style="color: #008080">358</span> self.timeout = setTimeout(<span style="color: #0000ff">function</span><span style="color: #000000">() {
</span><span style="color: #008080">359</span> self.canvas.width = self.cw =<span style="color: #000000"> $(window).innerWidth();
</span><span style="color: #008080">360</span> self.canvas.height = self.ch =<span style="color: #000000"> $(window).innerHeight();
</span><span style="color: #008080">361</span> self.ctx.lineCap = 'round'<span style="color: #000000">;
</span><span style="color: #008080">362</span> self.ctx.lineJoin = 'round'<span style="color: #000000">;
</span><span style="color: #008080">363</span> }, 100<span style="color: #000000">);
</span><span style="color: #008080">364</span> <span style="color: #000000"> });
</span><span style="color: #008080">365</span>
<span style="color: #008080">366</span> $(self.canvas).on('mousedown', <span style="color: #0000ff">function</span><span style="color: #000000">(e){
</span><span style="color: #008080">367</span> self.mx = e.pageX -<span style="color: #000000"> self.canvas.offsetLeft;
</span><span style="color: #008080">368</span> self.my = e.pageY -<span style="color: #000000"> self.canvas.offsetTop;
</span><span style="color: #008080">369</span> self.currentHue =<span style="color: #000000"> rand(self.hueMin, self.hueMax);
</span><span style="color: #008080">370</span> self.createFireworks(self.cw/2, self.ch, self.mx, self.my);
<span style="color: #008080">371</span>
<span style="color: #008080">372</span> $(self.canvas).on('mousemove.fireworks', <span style="color: #0000ff">function</span><span style="color: #000000">(e){
</span><span style="color: #008080">373</span> self.mx = e.pageX -<span style="color: #000000"> self.canvas.offsetLeft;
</span><span style="color: #008080">374</span> self.my = e.pageY -<span style="color: #000000"> self.canvas.offsetTop;
</span><span style="color: #008080">375</span> self.currentHue =<span style="color: #000000"> rand(self.hueMin, self.hueMax);
</span><span style="color: #008080">376</span> self.createFireworks(self.cw/2, self.ch, self.mx, self.my);
<span style="color: #008080">377</span> <span style="color: #000000"> });
</span><span style="color: #008080">378</span> <span style="color: #000000"> });
</span><span style="color: #008080">379</span>
<span style="color: #008080">380</span> $(self.canvas).on('mouseup', <span style="color: #0000ff">function</span><span style="color: #000000">(e){
</span><span style="color: #008080">381</span> $(self.canvas).off('mousemove.fireworks'<span style="color: #000000">);
</span><span style="color: #008080">382</span> <span style="color: #000000"> });
</span><span style="color: #008080">383</span>
<span style="color: #008080">384</span> <span style="color: #000000"> }
</span><span style="color: #008080">385</span>
<span style="color: #008080">386</span> self.clear = <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">387</span> self.particles =<span style="color: #000000"> [];
</span><span style="color: #008080">388</span> self.fireworks =<span style="color: #000000"> [];
</span><span style="color: #008080">389</span> self.ctx.clearRect(0, 0<span style="color: #000000">, self.cw, self.ch);
</span><span style="color: #008080">390</span> <span style="color: #000000"> };
</span><span style="color: #008080">391</span>
<span style="color: #008080">392</span>
<span style="color: #008080">393</span> self.canvasLoop = <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">394</span> <span style="color: #000000"> requestAnimFrame(self.canvasLoop, self.canvas);
</span><span style="color: #008080">395</span> self.ctx.globalCompositeOperation = 'destination-out'<span style="color: #000000">;
</span><span style="color: #008080">396</span> self.ctx.fillStyle = 'rgba(0,0,0,'+self.clearAlpha/100+')';
<span style="color: #008080">397</span> self.ctx.fillRect(0,0<span style="color: #000000">,self.cw,self.ch);
</span><span style="color: #008080">398</span> <span style="color: #000000"> self.updateFireworks();
</span><span style="color: #008080">399</span> <span style="color: #000000"> self.updateParticles();
</span><span style="color: #008080">400</span> <span style="color: #000000"> self.drawFireworks();
</span><span style="color: #008080">401</span> <span style="color: #000000"> self.drawParticles();
</span><span style="color: #008080">402</span>
<span style="color: #008080">403</span> <span style="color: #000000"> };
</span><span style="color: #008080">404</span>
<span style="color: #008080">405</span> <span style="color: #000000"> self.init();
</span><span style="color: #008080">406</span>
<span style="color: #008080">407</span> <span style="color: #000000"> }
</span><span style="color: #008080">408</span> <span style="color: #0000ff">var</span> fworks = <span style="color: #0000ff">new</span><span style="color: #000000"> Fireworks();
</span><span style="color: #008080">409</span>
<span style="color: #008080">410</span> <span style="color: #000000"> });
</span><span style="color: #008080">411</span>
<span style="color: #008080">412</span> </script>
<span style="color: #008080">413</span>
<span style="color: #008080">414</span> </body>
<span style="color: #008080">415</span> </html>
广大网友们!因为这是放假的时候老师给发的!所以我也看不太懂有些东西!实在是抱歉 有什么不明白的,就留言告诉我!我去找我曾经的老师问问,虽然他已经退休好久了!!
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Evolusi JavaScript: Trend Semasa dan Prospek Masa DepanApr 10, 2025 am 09:33 AMTrend terkini dalam JavaScript termasuk kebangkitan TypeScript, populariti kerangka dan perpustakaan moden, dan penerapan webassembly. Prospek masa depan meliputi sistem jenis yang lebih berkuasa, pembangunan JavaScript, pengembangan kecerdasan buatan dan pembelajaran mesin, dan potensi pengkomputeran IoT dan kelebihan.
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