HTML DOM Table deleteTHead()用法及代码示例

表deleteTHead()方法用于从表中删除<thead>元素及其内容。仅当<thead>元素已经存在时才可以使用它。

用法

tableObject.deleteTHead()

下面的程序演示了表deleteTHead()方法：示例1：删除<thead>元素。

<!DOCTYPE html> 
<html> 
  
<head> 
    <title>Table deleteTHead() Method in HTML 
  </title> 
    <style> 
        table, 
        td { 
            border:1px solid green; 
        } 
          
        h1 { 
            color:green; 
        } 
          
        h2 { 
            font-family:Impact; 
        } 
          
        body { 
            text-align:center; 
        } 
    </style> 
</head> 
  
<body> 
  
    <h1>GeeksforGeeks</h1> 
    <h2>Table deleteTHead() Method</h2> 
  
    <p>To create a Header for the table,  
      double-click the "Add Header" button.</p> 
  
    <p>To delete the Header from the table, 
      double-click the "Delete Header" button.</p> 
  
    <table id="Courses" align="center"> 
        <tr> 
            <td>Java</td> 
            <td>Fork Java</td> 
        </tr> 
        <tr> 
            <td>Python</td> 
            <td>Fork Python</td> 
        </tr> 
        <tr> 
            <td>Placements</td> 
            <td>Sudo Placement</td> 
        </tr> 
  
    </table> 
    <br> 
  
    <button ondblclick="Add_Head()"> 
      Add Header 
  </button> 
  
    <button ondblclick="Delete_Head()"> 
      Delete Header 
  </button> 
  
    <script> 
        function Add_Head() { 
            var MyTable =  
            document.getElementById("Courses"); 
            
            // Creating table. 
            var MyHeader =  
                MyTable.createTHead(); 
            var MyRow = MyHeader.insertRow(0); 
            var MyCell = MyRow.insertCell(0); 
            MyCell.innerHTML =  
              "<strong>GeeksforGeeks.</strong>"; 
        } 
  
        function Delete_Head() { 
            
            // Delete thead. 
            document.getElementById( 
              "Courses").deleteTHead(); 
        } 
    </script> 
  
</body> 
  
</html>

输出：

在单击“Add Header”按钮之前：
单击“Add Header”按钮后：
单击“Delete Header”按钮后：

支持的浏览器：

苹果Safari
IE浏览器
火狐浏览器
谷歌浏览器
Opera

相关用法

注：本文由纯净天空筛选整理自Shubrodeep Banerjee大神的英文原创作品 HTML | DOM Table deleteTHead() Method。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。