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      VB.net 2010 視頻教程 VB.net 2010 視頻教程 VB.net 2010 視頻教程
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      首頁 > 網站開發 > JavaScript >
      • JavaScript教程之前端小demo——tab切換

      • 2019-04-17 20:48 來源:未知
      復制代碼
      復制代碼
      <!DOCTYPE html>
      <html>
      <head lang="en">
          <meta charset="UTF-8">
          <title></title>
          <style>
              * {
                  margin: 0;
                  padding: 0;
              }
              ul {
                  list-style: none;
              }
              #div {
                  width: 640px;
                  height: 480px;
                  border: 2px solid #cccccc;
                  margin: 100px auto;
      
              }
              #top {
                  height: 45px;
              }
              #top span {
                  display: inline-block;
                  width: 154px;
                  background-color: lightskyblue;
                  line-height: 45px;
                  text-align: center;
                  cursor: pointer;
              }
              #top span.choose {
                  background-color: deepskyblue;
      
              }
              #content li {
                  display: none;
              }
              #content li.choose {
                  display: block;
              }
              body {
                  background-image: url("img/bg.gif");
              }
          </style>
      </head>
      <body>
      <div id="div">
          <div id="top">
              <span class="choose">晉助</span>
              <span>半藏</span>
              <span></span>
              <span>銀時</span>
          </div>
      
          <div id="content">
              <ul>
                  <li class="choose"><img src="img/yh1.jpg" alt=""/></li>
                  <li><img src="img/yh2.jpg" alt=""/></li>
                  <li><img src="img/yh3.jpg" alt=""/></li>
                  <li><img src="img/yh4.jpg" alt=""/></li>
              </ul>
          </div>
      </div>
      <script>
      
          //獲取列表中的元素
          var spanO=document.getElementsByTagName("span");
          var liO=document.getElementsByTagName("li");
          //循環遍歷每個span標簽
          for(var i=0;i<spanO.length;i++) {
              //添加自定義屬性,索引
              spanO[i].setAttribute("index",i);
              //注冊點擊事件,添加事件處理函數
              spanO[i].onclick=function() {
                  //循環遍歷每個span
                  for(var j=0;j<spanO.length;j++) {
                      //移除span的樣式
                      spanO[j].removeAttribute("class");
                  }
                  //給每個span賦予新樣式
                  this.className="choose";
                  //循環遍歷每個li
                  for(var k=0;k<liO.length;k++) {
                      //移除li的樣式
                      liO[k].removeAttribute("class");
                  }
                  liO[this.getAttribute("index")].className="choose";
              }
          }
      </script>
      
      
      </body>
      </html>
      復制代碼

      代碼中圖片替換成自己的圖片,主要用到的是“排他思想”

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