HTML | DOM IFrame contentWindow Property

The IFrame contentWindow Property in HTML DOM is used to return the Window object generated by an iframe element. It can be used in the host window to access the document object that belongs to a frame or iframe element.

Syntax:

iframeObject.contentWindow

Return Value: It returns reference Window object generated by an iframe element.

Example:

html

<!DOCTYPE html>

<html>
 
<head>

    <title>

        HTML DOM iframe contentWindow Property

    </title>

</head>
 
<body style="text-align:center;">
 
    <h1>GeeksforGeeks</h1>
 
    <h2> 

        HTML DOM iframe contentWindow Property 

    </h2>
 
    <iframe src="https://ide.geeksforgeeks.org/index.php"

            id="GFG"

            height="200" 

            width="400">

    </iframe>
 
    <br>

    <br>
 
    <button onclick="Geeks()">

        Submit

    </button>
 
    <script>

        function Geeks() {

            var iframeID = document.getElementById("GFG");
 
            var iframeCW = (iframeID.contentWindow || iframeID.contentDocument);
 
            if (iframeCW.document) iframeCW = iframeCW.document;

            iframeCW.body.style.border = "5px solid red";

        }

    </script>

</body>
 
</html>

Before Clicking On Button:

After Clicking on Button:

Supported Browsers: The browsers supported by IFrame contentWindow Property are listed below:

Google Chrome 1.0 and above
Edge 12.0 and above
Firefox 1.0 and above
Internet Explorer 5.5 and above
Opera 8.0 and above
Safari 3.0 and above

Article Tags :

HTML

Web Technologies

HTML-DOM