HTML DOM Table deleteTHead()用法及代碼示例

表deleteTHead()方法用於從表中刪除<thead>元素及其內容。僅當<thead>元素已經存在時才可以使用它。

用法

tableObject.deleteTHead()

下麵的程序演示了表deleteTHead()方法：示例1：刪除<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>

輸出：

在單擊“Add Header”按鈕之前：
單擊“Add Header”按鈕後：
單擊“Delete Header”按鈕後：

支持的瀏覽器：

蘋果Safari
IE瀏覽器
火狐瀏覽器
穀歌瀏覽器
Opera

相關用法

注：本文由純淨天空篩選整理自Shubrodeep Banerjee大神的英文原創作品 HTML | DOM Table deleteTHead() Method。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。