使用Require.js封装原生js轮播图的实现代码

时间:2021-05-25

index.html页面:

<!DOCTYPE html><html><head><meta charset="UTF-8"><title>require.js封装轮播图</title><style type="text/css">  *{    margin: 0;    padding: 0;    list-style: none;  }  #banner{    width: 830px;    height: 440px;    border: solid 1px;    margin: 50px auto;    position: relative;    overflow: hidden;  }  #banner ul{    position: absolute;    left: 0;    top: 0;  }  #banner ul li{    width: 830px;    height: 440px;    float: left;  }  #banner p{    position: absolute;    left: 50%;    bottom: 10px;    margin-left: -30px;  }  #banner p span{    display: block;    float: left;    width: 15px;    height: 15px;    margin-right: 6px;    background: #ccc;    border-radius: 50%;  }  #banner p .on{    background: red;  }</style><script type="text/javascript" src="require.js" data-main='init'></script><!--<script type="text/javascript">  require(['slider'],function(mod){  mod.slide()})</script>--></head><body>  <div id="banner">    <ul>      <li><img src="images/1.jpg"/></li>      <li><img src="images/2.jpg"/></li>    </ul>    <p>      <span class="on"></span>      <span></span>      <span></span>    </p>  </div></body></html>

get.js代码如下:

define(function(require,exports,module){  exports.getStyle = function (obj,name){    if(obj.currentStyle){      return obj.currentStyle[name];    }else{      return getComputedStyle(obj,false)[name];    };  };});

init.js代码如下

require(['slider'],function(mod){  mod.slide();});

slider.js代码如下

define(function(require, exports, module) {  var move = require('StartMove');  var aBtn = document.getElementById('banner').getElementsByTagName('span');  var oUl = document.getElementById('banner').getElementsByTagName('ul')[0];  var aLi = oUl.children;  //三张图片所占的宽度,length返回的是字符串中的字符数    oUl.style.width = aLi.length * aLi[0].offsetWidth + 'px';    exports.slide = function() {      for(var i = 0; i < aBtn.length; i++) {        aBtn[i].index = i;        aBtn[i].onclick = function() {          for(var i = 0; i < aBtn.length; i++) {            aBtn[i].className = '';          }        aBtn[this.index].className = 'on';          move.move(oUl, {          left: -this.index * aLi[0].offsetWidth;        });      };    };  };});

StartMove.js代码如下

define(function(require, exports, module) {  var get = require('get');  exports.move = function move(obj, json, complete) {    clearInterval(obj.timer);    var complete = complete || {};    complete.dur = complete.dur || 1000;    complete.easing = complete.easing || 'ease-out';    var count = parseInt(complete.dur / 30); //总次数    var start = {}; //{width:300,height:300}    var dis = {};    //{width:300,height:300}    for(var name in json) {      start[name] = parseFloat(get.getStyle(obj, name));      dis[name] = json[name] - start[name];    }    var n = 0; //当前步数    obj.timer = setInterval(function() {    n++;    for(var name in json) {      var a = n / count;      switch(complete.easing) {        case 'linear':        var cur = start[name] + a * dis[name];        break;        case 'ease-in':        var cur = start[name] + Math.pow(a, 3) * dis[name];        break;        case 'ease-out':        var a = 1 - n / count;        var cur = start[name] + (1 - Math.pow(a, 3)) * dis[name];        break;      };      if(name == 'opacity') {          obj.style[name] = cur;          obj.style.filter = 'alpha(' + cur * 100 + ')';        } else {          obj.style[name] = cur + 'px';        };      };      if(n == count) {        clearInterval(obj.timer)        complete.fn && complete.fn();      };    }, 30);   }; });

以上所述是小编给大家介绍的使用Require.js封装原生js轮播图,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对网站的支持!

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