The example of this article describes the implementation method of js tab. Share it with everyone for your reference. The specific analysis is as follows:
1. Ideas
1. Get the element;
2. Add onclick (click) or onmousemove (move in) event to the for loop button element;
3. When the current button is clicked, it will be displayed in a highlighted state. Through the for loop, set the style of all buttons to empty and set the display of all divs to none.
4. Click the current button to add a style, display the current div, and set display to block.
2. HTML code:
<div id="div1"> <input type="button" class="active" value="1"/> <input type="button" value="2"/> <input type="button" value="3"/> <input type="button" value="4"/> <div class="div2" style="display:block;">11</div> <div class="div2">22</div> <div class="div2">33</div> <div class="div2">44</div> </div>
3. CSS part:
.active { background:#9CC; } .div2 { width:300px; height:200px; border:1px #666666 solid; display:none; }
4. JS code:
<script> window.onload=function(){ var odiv=document.getElementById('div1');//获取div var btn=odiv.getElementsByTagName('input');//获取div下的input var div2=odiv.getElementsByTagName('div') ;//获取div下的div for(i=0;i<btn.length;i++)//循环每个按钮 { btn[i].index=i //btn[i]是指定button的第i个按钮;为该按钮添加一个index属性,并将index的值设置为i btn[i].onclick=function()//按钮的第i个点击事件 { for(i=0;i<btn.length;i++)//循环去掉button的样式,把div隐藏 { btn[i].className='' //清空按钮的样式 div2[i].style.display='none'//隐藏div } this.className='active'//自身添加active div2[this.index].style.display='block'//this.index是当前div } } } </script>
I hope this article will be helpful to everyone’s javascript programming.
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