ホームページ > 記事 > ウェブフロントエンド > JSを使用して520コードを実装する方法
今回は、JS を使用して 520 コードを実装する方法と、JS を使用して 520 コードを実装するための 注意事項 を説明します。以下は実際のケースです。
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>520</title> <style> html, body{padding:0px; margin:0px; background:#222; font-family: 'Karla', sans-serif; color:#FFF; height:100%; overflow:hidden;} canvas {width:100%; height:100%;} #text,#text_520{font-family:'楷体'; color:rgb(255,255,3); font-size:20px; position:fixed; left:10%; top:10%;} #text_520{font-size:100px; top:50%; left:50%;} img{position:fixed; top:0; left:0; width:100%;} #last{font-size:12px; bottom:10px; left:50%; position:fixed;} /* @keyframes drop { 0% { transform: translateY(-100px); opacity: 0; } 90% { opacity: 1; transform:translateY(10px); } 100% { transform:translateY(0px;) } } */ </style> </head> <body> <canvas id="c"></canvas> <p id="text"></p> <p id="text_520">5 2 0</p> <img src="./timg.jpg" class="img" /> <p id="last">版权所有:李晓珂</p> <script type="text/javascript" src="./jquery-1.11.0.min.js"></script> <script type="text/javascript"> function isIE(){ var u = navigator.userAgent; if((u.indexOf("compatible") > -1 && u.indexOf("MSIE") > -1) || (u.indexOf("Trident") > -1 && u.indexOf("rv:11.0") > -1)){ alert("该浏览器暂不支持,请更换浏览器"); window.open('','_self'); window.close(); } var audio = document.createElement("audio"); audio.setAttribute("src","./520-love.mp3"); audio.setAttribute("autoplay","autoplay"); } isIE(); </script> <script type="text/javascript"> var textArr = [ 'I love three things in this world,', 'the sun ,the moon and you.', 'The sun for the day,', 'the moon for the night,', 'and you forever!', '', 'If you were a teardrop,', 'in my eye,', 'for fear of losing you,', 'I would never cry.', 'And if the golden sun,', 'should cease to shine its light,', 'just one smile from you,', 'would make my whole world bright.' ]; var text_520 = document.getElementById('text_520'); var height = (window.innerHeight - text_520.offsetHeight) / 2; var width = (window.innerWidth - text_520.offsetWidth) / 2; text_520.style.top = height + 'px'; text_520.style.left = width + 'px'; $('#text_520').hide(); $('.img').hide(); var m = 0; var n = 0; var text = document.getElementById('text'); function typing(){ if(m <= textArr[n].length) { text.innerHTML = text.innerHTML.substring(0,text.innerHTML.length-1) + textArr[n].substr(m++,1) + '_'; setTimeout(typing,250); }else { if(n < textArr.length-1){ text.innerHTML = text.innerHTML.substring(0,text.innerHTML.length-1) + "<br />_"; n++; m = 0; typing(); }else { text.innerHTML = text.innerHTML.substring(0,text.innerHTML.length-1); $('#text').fadeOut(5000); setTimeout(function(){$('#text_520').fadeIn(5000);},7000); setTimeout(function(){$('#text_520').fadeOut(5000); },7000); setTimeout(function(){$('.img').fadeIn(50000);},15000) } } } setTimeout(typing,5000); var ctx = document.querySelector('canvas').getContext('2d'); ctx.canvas.width = window.innerWidth; ctx.canvas.height = window.innerHeight; var sparks = []; var fireworks = []; var walker; fireworks.pop(); var i = 10; while(i--) fireworks.push(new Firework(Math.random()*window.innerWidth, window.innerHeight*Math.random())); // setInterval(render, 1000/50); render(); function render() { setTimeout(render, 1000/50); ctx.fillStyle = 'rgba(0, 0, 0, 0.2)'; ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height); // 上升效果 for(var firework of fireworks) { if(firework.dead) continue; firework.move(); firework.draw(); } // 绽放效果 for(var spark of sparks) { if(spark.dead) continue; spark.move(); spark.draw(); } if(Math.random() < 0.1) fireworks.push(new Firework()); //ctx.height = ctx.height; } function Spark(x, y, color) { this.x = x; this.y = y; this.dir = Math.random() * (Math.PI*2); this.dead = false; this.color = color; this.speed = Math.random() * 3 + 3; walker = new Walker({ radius: 20, speed: 0.25 }); this.gravity = 0.25; this.dur = this.speed / 0.15; this.move = function() { this.dur--; if(this.dur < 0) this.dead = true; if(this.speed < 0) return; if(this.speed > 0) this.speed -= 0.15; walk = walker.step(); this.x += Math.cos(this.dir + walk) * this.speed; this.y += Math.sin(this.dir + walk) * this.speed; this.y += this.gravity; this.gravity += 0.05; } this.draw = function() { drawCircle(this.x, this.y, 2, this.color); } } function Firework(x, y) { this.xmove = Math.random()*2 - 1; this.x = x || Math.random() * ctx.canvas.width; this.y = y || ctx.canvas.height; this.height = Math.random()*ctx.canvas.height/2; this.dead = false; this.color = randomColor(); this.move = function() { this.x += this.xmove; if(this.y > this.height) this.y -= 4; else this.burst(); } this.draw = function() { drawCircle(this.x, this.y, 3, this.color) } this.burst = function() { this.dead = true i = 100; while(i--) sparks.push(new Spark(this.x, this.y, this.color)); sparks.pop(); } } setTimeout(function (){window.open('','_self').close();},175000); /* // 清除两个数组 function clear(){ if(sparks!=null || fireworks!=null){ sparks.pop(); fireworks.pop(); } var sparks = []; var fireworks = []; } setInterval(clear,100); */ function drawCircle(x, y, radius, color) { color = color || '#FFF'; ctx.fillStyle = color; ctx.fillRect(x-radius/2, y-radius/2, radius, radius); } function randomColor(){ return ['#6ae5ab','#88e3b2','#36b89b','#7bd7ec','#66cbe1'][Math.floor(Math.random() * 5)]; } function Walker(options){ this.step = function(){ this.direction = Math.sign(this.target) * this.speed this.value += this.direction this.target ? this.target -= this.direction : (this.value) ? (this.wander) ? this.target = this.newTarget() : this.target = -this.value : this.target = this.newTarget() return this.direction } this.newTarget = function() { return Math.round(Math.random()*(this.radius*2)-this.radius) } this.start = 0 this.value = 0 this.radius = options.radius this.target = this.newTarget() this.direction = Math.sign(this.target) this.wander = options.wander this.speed = options.speed || 1 } </script> </body> </html>この記事の事例を読んだ後は、この方法を習得したと思います。さらに興味深い情報については、php 中国語 Web サイトの他の関連記事に注目してください。 推奨読書:
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以上がJSを使用して520コードを実装する方法の詳細内容です。詳細については、PHP 中国語 Web サイトの他の関連記事を参照してください。