DOM Element物件getAttribute()
方法用於獲取屬性的值(如果屬性存在於指定元素)。
語法
以下是getAttribute()
方法的使用語法。
elementObj.getAttribute(name)
引數
name
- 它包含要檢索的屬性的名稱。返回值
null
。範例
檔案:node.xml 的內容如下 -
<?xml version = "1.0" encoding = "UTF-8" standalone = "no" ?>
<Company>
<Employee category = "Technical" id = "firstelement">
<FirstName>Susen</FirstName>
<LastName>Su</LastName>
<ContactNo>1584567890</ContactNo>
<Email>[email protected]</Email>
</Employee>
<Employee category = "Non-Technical">
<FirstName>Max</FirstName>
<LastName>Su</LastName>
<ContactNo>1334667898</ContactNo>
<Email>[email protected]</Email>
</Employee>
<Employee category = "Management">
<FirstName>Min</FirstName>
<LastName>Su</LastName>
<ContactNo>1364562350</ContactNo>
<Email>[email protected]</Email>
</Employee>
</Company>
以下範例演示了getAttribute()
方法的用法 -
<!DOCTYPE html>
<html>
<meta charset="utf-8"/>
<head>
</head>
<body>
<script>
if (window.XMLHttpRequest) {
xmlhttp = new XMLHttpRequest();
} else {
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.open("GET","/node.xml",false);
xmlhttp.send();
xmlDoc = xmlhttp.responseXML;
x = xmlDoc.getElementsByTagName('Employee')[2];
document.write("屬性是: ");
document.write(x.getAttribute('category'));
</script>
</body>
</html>
執行上面範例程式碼,得到以下結果 -