HTML | sandbox Attribute

Last Updated : 30 Sep, 2019

The sandbox attribute permits an additional set of restrictions for the content within the iframe. When the sandbox attribute exists, and it will:

treat the content as being from a singular origin:

It blocks form submission
It blocks script execution
It disables APIs
It also preventing links from targeting other browsing contexts
It stops the content to navigate its top-level browsing context
block automatically triggered features (such as automatically playing a video or automatically focusing a form control)

The value of the sandbox attribute will either be simply sandboxed (then all restrictions are applied) or a space-separated list of pre-defined values which will take away the actual restrictions.

Supported tags:

<iframe>

Example:

<!DOCTYPE html> 
<html> 
  
<head> 
    <title> 
        HTML DOM IFrame Object Property 
    </title> 
</head> 
  
<body> 
    <h1>GeeksforGeeks</h1> 
  
    <h2>DOM IFrame Object Property</h2> 
  
    <button onclick="myGeeks()"> 
        Click Here! 
    </button> 
  
    <br> 
    <br> 
  
    <iframe id="GFGFrame" 
            src="https://ide.geeksforgeeks.org/tryit.php" 
            width="400"
            height="200" 
            sandbox> 
    </iframe> 
  
    <p id="GFG"></p> 
  
    <!-- script to access iframe element -->
    <script> 
        function myGeeks() { 
            var x = document.getElementById("GFGFrame").src; 
            document.getElementById("GFG").innerHTML = x; 
        } 
    </script> 
</body> 
  
</html> 

Output:

Supported Browsers: The browsers supported by HTML video preload Attribute are listed below

Google Chrome 4.0
Firefox 4.0
Apple Safari 4.0
Opera 10.5
Edge

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