JavaScript node.lookupPrefix() Method
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JavaScript node.lookupPrefix() Method
The node.lookupPrefix() method returns a DOMString containing the prefix for a given namespace URI, if present, and null if not.
Example
The XML file used in the example: game.xml.
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<p id="point"></p>
<script>
var x = document.getElementById("point");
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function(){
if(this.readyState == 4 && this.status == 200){
var xmlDoc = xhttp.responseXML;
var xmlNode = xmlDoc.getElementsByTagName("game")[0];
x.innerHTML = xmlNode.lookupPrefix("https://wikimass.com/football/");
}
};
xhttp.open("GET", "/game.xml", true);
xhttp.send();
</script>
</body>
</html>
Syntax
node.lookupPrefix(namespaceURI)
Parameter Values
| Value | Type | Explanation |
|---|---|---|
| namespaceURI | Required | Specifies the namespace URI to look for. |
Return Values
| Value | Explanation |
|---|---|
| String | Returns a DOMString containing the prefix for a given namespace URI. |
| null | If there is no prefix for a given namespace URI. |
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