XML DOM lookupPrefix() Method

Element Object

Definition and Usage

lookupPrefix() The method returns the prefix that matches the specified namespace URI on the current node.

Syntax

elementNode.lookupPrefix(URI)
Parameter Description
URI Required. The namespace URI of the prefix to be found.

Example

The following code loads "books_ns.xml" into xmlDoc and finds the prefix of the given namespace URI:

var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
   if (this.readyState == 4 && this.status == 200) {
       myFunction(this);
   }
};
xhttp.open("GET", "books_ns.xml", true);
xhttp.send();
function myFunction(xml) {
    var xmlDoc = xml.responseXML;
    var x = xmlDoc.getElementsByTagName("book")[0];
    document.getElementById("demo").innerHTML =
    x.lookupPrefix("https://www.codew3c.com/meishi/");
}

Try It Yourself

Element Object