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HTML | sandbox Attribute
  • Last Updated : 14 Apr, 2021

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>



<!DOCTYPE html>
        HTML sandbox attribute
    <h2>HTML sandbox attribute</h2>
    <button onclick="myGeeks()">
        Click Here!
    <iframe id="GFGFrame"
    <p id="GFG"></p>
    <!-- script to access iframe element -->
        function myGeeks() {
            var x = document.getElementById("GFGFrame").src;
            document.getElementById("GFG").innerHTML = x;


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

  • Google Chrome 4.0
  • Firefox 4.0
  • Apple Safari 4.0
  • Opera 10.5
  • Edge



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