The DOM defaultView property in HTML is used to return the document Window Object. The window object is the open windows in the browser.
Syntax:
document.defaultView Return Value: It is used to return the current Window Object.
Example 1: In this example use the defaultView property to get the window object and display it in a <p> element when the button is clicked. The content is centered and styled.
<!DOCTYPE html>
<html>
<head>
<title>
DOM defaultView Property
</title>
</head>
<body style="text-align:center">
<h1 style="color:green">GeeksForGeeks</h1>
<h2>DOM defaultView Property </h2>
<button onclick="geeks()">Submit</button>
<p id="sudo"></p>
<script>
function geeks() {
let doc = document.defaultView;
document.getElementById("sudo").innerHTML = doc;
}
</script>
</body>
</html>
Output:

Example 2: This example is used to return the width and height of the Windows.
<!DOCTYPE html>
<html>
<head>
<title>
DOM defaultView Property
</title>
</head>
<body>
<center>
<h1 style="color:green;">GeeksForGeeks</h1>
<h2>DOM defaultView Property </h2>
<button onclick="Geeks()">Submit</button>
<p id="sudo"></p>
<!-- script to find window size -->
<script>
function Geeks() {
let def_view = document.defaultView;
let width = def_view.innerWidth;
let height = def_view.innerHeight;
document.getElementById("sudo").innerHTML
= "Width: " + width +
"<br>Height: " + height;
}
</script>
</center>
</body>
</html>
Output:
Supported Browsers: The browser supported by DOM defaultView property are listed below: