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How to remove css attributes in js

May 30, 2020 pm 04:47 PM

How to remove css attributes in js

#How to remove css attributes in js?

At work, I often need to use Javascript to change the style of page elements. One way is to change the CSS class (Class) of the page element. In traditional Javascript, we usually do this by processing the classname attribute of HTML Dom. We can also remove css styles through this method.

JavaScript method to remove css attributes:

Use document.getElementById("objid").className="" to clear the style;

className attribute sets or returns the class attribute of the element. You can change the css style more by changing the class attribute.

In some browsers (such as Chrome), whatever value you assign to it will be returned. In IE, it is more painful. It will format the output, capitalize attributes, change the order of attributes, and remove the last semicolon

Example:

<!doctype html><html>
  
  <head>
    <meta charset="utf-8">
    <title>信息管理</title>
    <!--通知ie使用最新内核-->
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <!--响应式，约束缩放-->
    <meta name="viewport" content="width=device-width, maxinum-scale=1,user-scalable=no,initial-scale=1">
    <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css">
    <script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
    <style>body{ background:#eee;} #main{ max-width:640px; font-family:"微软雅黑"; } 
    /*头部*/
    .tou{ background:#fff; margin-top:20px; padding-top:13px; padding-bottom:13px;} 
    /*头部左边*/
    .tou .tou-left{ margin-left:15px;} .tou .tou-left a{} 
    .tou .tou-left img{ width:78px; height:78px;}
    /*头部右边*/ 
     .tou .tou-right{ position:relative; float:left; margin-left:20px;}
    .tou .tou-right h3{ font-size:18px; margin-top:3px; margin-bottom:8px;} 
    .tou .tou-right p{ font-size:14px; color:#999; margin-bottom:5px;}
    .tou .tou-right .self-depart{ margin-bottom:0px;} 
    /*采集和已采集连接*/ 
    .self-nav{ margin-top:20px; background:#fff; ;} 
    .self-nav .col-xs-6{ padding-left:0; padding-right:0; margin-left:0; margin-right:0; }
    .self-nav .btn{ padding-top:10px; padding-bottom:10px;} 
    /*采集列表*/ 
    .self-menu{ margin-top:20px; background:#fff;border-top:1px solid #fff; 
    border-bottom:1px solid #fff; }
    .self-menu .self-menu-cont li{ border-bottom:1px solid #eee;} 
    .self-menu .self-menu-cont li .self-danger{ background:#C00;} 
    /*底部技术支持*/
    .self-footer{ margin-top:20px; background:#fff; padding-top:13px; padding-bottom:13px; } 
     .self-footer p{ margin-bottom:0; font-size:12px; color:#666; text-align:center;}   </style>
  </head>
  
  <body>
    <div id="main">
      <!--头部-->
      <div>
        <div>
          <a href="./">
            <img  src="" / alt="How to remove css attributes in js" ></a>
        </div>
        <div>
          <h3 id="张三">张三</h3>
          <p>微信号：zhangsan</p>
          <p>部门：安全部</p></div>
      </div>
      <!--banner-->
      <div>
        <div>
         <a href="#tab1" 
         id="send" onclick="hiddenTag()">信息列表</a></div>
        <div>
          <a href="#tab2" onclick="showTag()">
          添加信息</a></div>
      </div>
      <!--菜单列表-->
      <div>
        <ul id="tab1">
          <li>
            <a href="">信息列表              <span>10</span></a>
          </li>
          <li>
            <a href="">消息列表              <span>10</span></a>
          </li>
          <li>
            <a href="">留言列表              <span>10</span></a>
          </li>
          <li>
            <a href="">传达列表              <span>10</span></a>
          </li>
          <li>
            <a href="">通知列表              <span>10</span></a>
          </li>
        </ul>
        <ul 
        id="tab2">
          <li>
            <a href="">添加信息</a></li>
          <li>
            <a href="">添加消息</a></li>
          <li>
            <a href="">添加留言</a></li>
          <li>
            <a href="">添加传达</a></li>
          <li>
            <a href="">添加通知</a></li>
        </ul>
      </div>
    </div>
  </body>
  <script>function hiddenTag() {      //通过JS添加样式+移除样式
      document.getElementById(&#39;tab1&#39;).style.display = "block";      document.getElementById(&#39;tab2&#39;).style.display = "none";
    }    function showTag() {      //通过JS添加样式+移除样式
      document.getElementById(&#39;tab1&#39;).style.display = "none";      document.getElementById("tab2").removeAttribute("style");
    }</script></html>

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