DOM - Element Object 方法 - removeAttribute

removeAttribute方法指定從該元素中刪除該屬性值。

語法

以下是removeAttribute方法的使用語法。

elementObj.removeAttribute(name)

序號	引數和說明
1	name 儲存要檢索的屬性名稱。

此方法刪除指定標籤的名稱。

示例

node.xml 內容如下 −

<?xml version = "1.0"?>
<Company>
   <Employee category = "Technical">
      <FirstName>Tanmay</FirstName>
      <LastName>Patil</LastName>
      <ContactNo>1234567890</ContactNo>
      <Email>tanmaypatil@xyz.com</Email>
   </Employee>
   
   <Employee category = "Non-Technical">
      <FirstName>Taniya</FirstName>
      <LastName>Mishra</LastName>
      <ContactNo>1234667898</ContactNo>
      <Email>taniyamishra@xyz.com</Email>
   </Employee>
   
   <Employee category = "Management">
      <FirstName>Tanisha</FirstName>
      <LastName>Sharma</LastName>
      <ContactNo>1234562350</ContactNo>
      <Email>tanishasharma@xyz.com</Email>
   </Employee>
</Company>

以下示例演示了removeAttribute方法的使用 −

<!DOCTYPE html>
<html>
   <head>
      <script>
         function loadXMLDoc(filename) {
            if (window.XMLHttpRequest) {
               xhttp = new XMLHttpRequest();
            } else // code for IE5 and IE6 {
               xhttp = new ActiveXObject("Microsoft.XMLHTTP");
            }
            xhttp.open("GET",filename,false);
            xhttp.send();
            return xhttp.responseXML;
         }
      </script>
   </head>
   <body>
      <script>
         xmlDoc = loadXMLDoc("/dom/node.xml");
         x = xmlDoc.getElementsByTagName('Employee');

         document.write("Before removing the attribute: ");
         document.write(x[1].getAttribute('category'));
         document.write("<br>");

         x[1].removeAttribute('category');

         document.write("After removing the attribute: ");
         document.write(x[1].getAttribute('category'));
      </script>
   </body>
</html>

執行

將此檔案儲存在伺服器路徑上（此檔案和 node.xml 應在伺服器中的同一個路徑），檔名為elementattribute_removeattribute.htm。我們將獲得如下所示的輸出 −

Before removing the attribute: non-technical
After removing the attribute: null

dom_element_object.htm

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