The HTML DOM baseURI property returns the base Uniform Resource Identifier (URI) of the document. The property is read-only. The return type is a string value that represents the base URI of the given page.
Syntax
Following is the syntax for baseURI Property −
node.baseURI
Example
Let us see an example of the HTML DOM baseURI Property −
<!DOCTYPE html>
<html>
<body>
<p>Click the button below to see the base URI of the document</p>
<button onclick="BaseFunction()">BASE URI</button>
<p id="Sample"></p>
<script>
function BaseFunction() {
var x = document.baseURI;
document.getElementById("Sample").innerHTML = x;
}
</script>
</body>
</html>Output
This will produce the following output −

On clicking the BASE URI button −

In the above example −
We have created a button BASE URI to execute the BaseFunction() −
<button onclick="BaseFunction()">BASE URI</button>
The BaseFunction() gets the baseURI of the document using the baseURI property and displays it into the paragraph with id “Sample” −
function BaseFunction() {
var x = document.baseURI;
document.getElementById("Sample").innerHTML = x;
}