简单实现js选项卡切换效果

2019-11-19 17:39:30

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本文实例为大家分享了js选项卡切换效果的具体代码，供大家参考，具体内容如下

实现思路：

1、首先获取id元素。
2、for循环历遍按钮元素添加onclick事件。
3、排他思想，点击按钮时设置所有选项卡按钮样式为空，利用this关键字指定当前选项卡获得高亮样式。
4、下面的多个div内容块以此类推。

源代码：

<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>简单的选项卡切换（仿Hao123导航）</title></head><style> * {  margin: 0;  padding: 0; } .box {  width: 278px;  margin: 0 auto;  margin-top: 100px;  background-color: #F7F7F8;  overflow: hidden; } .btn button {  outline:none;  color: #616161;  font:14px/100% arial,"Hiragino Sans GB","Hiragino Sans GB W3",/5b8b/4f53;  border: none;  height: 34px;  width: 51px;  background-color: #F7F7F8;  float: left;  cursor: pointer; } .box .btn i {  height: 16px;  border-left: 1px solid #EAEAEA;  margin-top: 9px;  float: left;  _font-size: 0px; } .box .btn button:hover {  color: #0AA770; } .box .btn s {  cursor: pointer;  text-decoration: none;  font:14px/34px arial,"Hiragino Sans GB","Hiragino Sans GB W3",/5b8b/4f53; } #box1 #btns .clickbtn {  border-top: 1px solid #0AA770;  color: #0AA770; } .bottom {  display: none;  position: absolute;  width: 278px;  height: 110px;  color: #fff;  text-align: center;  font:14px/100% arial,"Hiragino Sans GB","Hiragino Sans GB W3",/5b8b/4f53; } .bottom a {  color: #fff;  position: relative;  top: -20px;  left: 0px;  text-decoration: none; } .bottom a:hover {  text-decoration: underline; }</style><script> window.onload = function(){  var btns = document.getElementById("btns").getElementsByTagName("button");  var divs = document.getElementById("bottomdivs").getElementsByTagName("div");  btns[0].className = "clickbtn";   for(var i = 0;i<btns.length;i++){    btns[i].index = i;    btns[i].onclick = function(){     //alert(this.index);     for(var j = 0;j<btns.length;j++){      btns[j].className = "";     }     this.className = "clickbtn";     for(var b = 0;b<btns.length;b++){      divs[b].style.display = "none";     }     divs[this.index].style.display = "block";    }  } }</script><body><div class="box" id="box1"> <div class="btn" id="btns">  <button>推介</button>  <i></i>  <button>社会</button>  <i></i>  <button>娱乐</button>  <i></i>  <button>军事</button>  <i></i>  <button>体育</button>  <s>+</s> </div> <div id="bottomdivs">  <div class="bottom" style="display: block">   <img src="images/01.jpg" alt="">   <h4><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >小伙直播时遭遇“闹鬼”事件 全过程被拍下</a></h4>  </div>  <div class="bottom">   <img src="images/02.jpg" alt="">   <h4><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >男子穿新郎装背充气娃娃游街</a></h4>  </div>  <div class="bottom">   <img src="images/03.jpg" alt="">   <h4><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >她满足所有人对才女的幻想</a></h4>  </div>  <div class="bottom">   <img src="images/04.jpg" alt="">   <h4><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >王毅回应中美是否会在南海发生冲突</a></h4>  </div>  <div class="bottom">   <img src="images/05.jpg" alt="">   <h4><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >刘翔与娇妻秀恩爱 豪车曝光车牌太抢眼</a></h4>  </div> </div></div></body></html>

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