Home >Web Front-end >JS Tutorial >Implement image sliding effect based on javascript_javascript skills
Today I saw a picture slide written by someone else. It looked cool. When I read the source code, it seemed a little difficult, so I imitated it and wrote one. The effect was the same as the original web page. However, my own js code has simple logic and needs to be updated. improve.
ps: I wrote a carousel two days ago, but the compatibility was not good. When I wrote this web page today, I followed the same idea and it runs very well on Google Chrome. Many functions of Firefox cannot be implemented because wrap-panel is used. For absolute positioning, change the translate translation to left. After the change, each browser runs well.
The specific code is as follows
html code (no comments)
<div class="container"> <h1>Parallax Slider</h1> <div class="wrap"> <div class="bg-img"> <div id="bg_1" class="bg bg-1" style="left: 0px;"></div> <div id="bg_2" class="bg bg-2" style="left: 0px;"></div> <div id="bg_3" class="bg bg-3" style="left: 0px;"></div> </div> <div id="wrap_panel" class="wrap-panel" style="left: 0px;"> <div class="panel panel-1"> <img id="img_1" src="images/1.jpg"> </div> <div class="panel panel-2"> <img src="images/2.jpg"> </div> <div class="panel panel-3"> <img src="images/3.jpg"> </div> <div class="panel panel-4"> <img src="images/4.jpg"> </div> <div class="panel panel-5"> <img src="images/5.jpg"> </div> <div class="panel panel-6"> <img src="images/6.jpg"> </div> </div> <div class="navigation-button"> <span id="perv_btn" class="perv-button"></span> <span id="next_btn" class="next-button"></span> </div> <div id="show_small" class="show-small"> <ul> <li><img src="images/thumbs/1.jpg"></li> <li><img src="images/thumbs/2.jpg"></li> <li><img src="images/thumbs/3.jpg"></li> <li><img src="images/thumbs/4.jpg"></li> <li><img src="images/thumbs/5.jpg"></li> <li><img src="images/thumbs/6.jpg"></li> </ul> </div> </div> </div>
css code (check it yourself):
* { margin: 0; padding: 0; } html, body, .container { width: 100%; height: 100%; font-family: 'Microsoft Yahei'; } .container { background-color: #222; overflow-x: hidden; } .container h1 { font-size: 50px; color: #ccc; text-align: center; font-weight: bolder; height: 120px; line-height: 120px; } .wrap { position: relative; width: 600%; height: 400px; border-top: 10px solid #333; border-bottom: 10px solid #333; margin-top: 20px; } .bg { position: absolute; width: 100%; height: 100%; left: 0; top: 0; -webkit-transition: all 1s;-moz-transition: all 1s;-ms-transition: all 1s;-o-transition: all 1s;transition: all 1s; } .bg-1 { background: url(images/bg1.png); } .bg-2 { background: url(images/bg2.png); } .bg-3 { background: url(images/bg3.png); } .wrap-panel { position: absolute; width: 100%; height: 100%; -webkit-transition: all 1s; -moz-transition: all 1s; -ms-transition: all 1s; -o-transition: all 1s; transition: all 1s; } .panel { width: 16.66%; height: 100%; float: left; } .panel img { display: block; margin: 0 auto; margin-top: 35px; border-radius: 10px; border: 10px solid rgba(143, 143, 143, 0.6); } .navigation-button span:hover { opacity: 0.8 } .perv-button, .next-button { position: absolute; width: 30px; height: 60px; background-color: #344133; border-radius: 10px; cursor: pointer; opacity: 0.4; } .perv-button { background: #000 url(images/prev.png) center center no-repeat; } .next-button { background: #000 url(images/next.png) center center no-repeat; } .show-small { position: absolute; width: 680px; bottom: 20px; } .show-small ul { list-style: none; } .show-small ul li { float: left; margin: 0 10px; border: 5px solid #fff; opacity: 0.7; cursor: pointer;-webkit-transition: all .3s; -moz-transition: all .3s; -ms-transition: all .3s;-o-transition: all .3s; transition: all .3s; } .show-small ul li:hover { margin-top: -15px; }
js code (small demo):
window.onload = function() { // 得到元素 var getDOM = function (id){ return typeof id==="string"?document.getElementById(id):id; } // 得到对象 var img = getDOM('img_1'); var prev = getDOM("perv_btn"); var next = getDOM("next_btn"); var wrap_panel = getDOM('wrap_panel'); var bg_1 = getDOM("bg_1"); var bg_2 = getDOM("bg_2"); var bg_3 = getDOM("bg_3"); var show_small = getDOM("show_small"); var list = show_small.getElementsByTagName("li"); var wwidth; // 为元素绑定事件 var addEvent = function(id,event,fn) { var el = getDOM(id) || document; if(el.addEventListener){ el.addEventListener(event,fn,false); }else if(el.attachEvent){ el.attachEvent('on' + event,fn); } } function init() { // 对按钮进行定位 // 向前按钮的左边距离=图片的左距离+边框 prev.style.left = img.offsetLeft + 10 + 'px'; // 向前按钮的上边距离=图片的上距离+图片高度的一半-按钮高度的一半 prev.style.top = img.offsetTop + img.clientHeight/2 - prev.clientHeight/2 + 'px'; next.style.left = img.offsetLeft + img.clientWidth + 10 - next.clientWidth + 'px'; next.style.top =prev.style.top; // 对小图片的容器进行定位 wwidth = document.documentElement.clientWidth || document.body.clientWidth; show_small.style.left = (wwidth - show_small.clientWidth)/2 + 'px'; } // 小图片的处理 function small_img() { // 对图片进行旋转处理 for (var i = 0;i< list.length; i++) { // 旋转方向 var direction = Math.pow(-1,parseInt(Math.random()*10)); list[i].style = "transform:rotate(" + (Math.random()*20*direction) + "deg)"; } list[0].style.opacity = 1; } function only_one(el,num) { for (var i = 0; i < el.length; i++) { el[i].style.opacity = 0.7; } // console.log(num); el[num].style.opacity = 1; } // 浏览器缩放时 window.onresize = function() { init(); } // 执行函数 init(); small_img(); addEvent(prev,'click',function() { // 改变wrap-panel的left var oldPos = parseInt(wrap_panel.style.left); if(oldPos == 0) { // 背景平移 图片容器平移 bg_1.style.left=bg_2.style.left=bg_3.style.left=wrap_panel.style.left = -wwidth*(list.length-1) +'px'; // 更改对应小图片透明度 only_one(list,list.length-1); } else { // 背景平移 图片容器平移 wrap_panel.style.left = (oldPos + wwidth) +'px'; bg_1.style.left= (oldPos + wwidth - parseInt(-(oldPos/wwidth + 1))*100) +'px'; bg_2.style.left= (oldPos + wwidth - parseInt(-(oldPos/wwidth + 1))*300) +'px'; bg_3.style.left= (oldPos + wwidth - parseInt(-(oldPos/wwidth + 1))*500) +'px'; // 更改对应小图片透明度 only_one(list,parseInt(-(oldPos/wwidth + 1))); } }); addEvent(next,'click',function() { // 改变wrap-panel的left var oldPos = parseInt(wrap_panel.style.left); if(oldPos == -wwidth*(list.length-1)) { // 背景平移 图片容器平移 bg_1.style.left=bg_2.style.left=bg_3.style.left=wrap_panel.style.left = '0px'; // 更改对应小图片透明度 only_one(list,0); } else { // 背景平移 图片容器平移 wrap_panel.style.left = (oldPos - wwidth) +'px'; bg_1.style.left= (oldPos - wwidth + parseInt(-(oldPos/wwidth + 1))*100) +'px'; bg_2.style.left= (oldPos - wwidth + parseInt(-(oldPos/wwidth + 1))*300) +'px'; bg_3.style.left= (oldPos - wwidth + parseInt(-(oldPos/wwidth + 1))*500) +'px'; // 更改对应小图片透明度 only_one(list,parseInt(-(oldPos/wwidth - 1))); } }); }
The above is the entire content of this article. I hope it will be helpful to everyone in learning javascript programming.