HTML DOM normalize()用法及代码示例

HTML中的normalize()方法用于将相邻的文本节点与第一个文本节点合并，并清空空白节点。 normalize()方法不需要任何参数。

用法:

node.normalize()

范例1：

<!DOCTYPE html> 
<html> 
  
<head> 
    <title> 
        DOM normalize Method 
    </title> 
</head> 
  
<body onload="normalizeNode()" 
      style="text-align:center"> 
  
    <h1>GeeksforGeeks</h1> 
    <h2>DOM normalize() Method</h2> 
  
    <button onclick="normalizeNode()"> 
        Normalize 
    </button> 
  
    <button onclick="addNode()"> 
        Add node 
    </button> 
    <p>There are <span id="count"></span> child nodes.</p> 
  
    <script> 
        // onload is used to reset the child text nodes 
        // count when page is refreshed and addNode 
        // function is used for addNode button 
        function addNode() { 
  
            // Creating a text node named "Normalize" 
            var text_node =  
                document.createTextNode("Normalize "); 
  
            // Using variable text_body to  
            //access the whole body 
            var text_body = document.body; 
  
            // Adding text node to the end of the body  
            text_body.appendChild(text_node); 
  
            // Count is used to store number of child text 
            // nodes present in the document 
            var text_node =  
                document.getElementById("count"); 
  
            // innerHTML fetches value of text_node and  
            // update it with new value. 
            text_node.innerHTML =  
              text_body.childNodes.length; 
        } 
  
        // normalizeNode function is used to Normalize button 
        function normalizeNode() { 
            document.normalize(); 
            var text_body = document.body; 
            var node_count =  
                document.getElementById("count"); 
            node_count.innerHTML = 
                  text_body.childNodes.length; 
        } 
    </script> 
</body> 
  
</html>

输出：

支持的浏览器：下面列出了DOM normalize()方法支持的浏览器：

谷歌浏览器
IE浏览器
火狐浏览器
Opera
苹果浏览器

相关用法

注：本文由纯净天空筛选整理自Abhishek7大神的英文原创作品 HTML | DOM normalize() 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。