HTML | <iframe> sandbox Attribute
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 stop 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.
Attention reader! Don’t stop learning now. Get hold of all the important HTML concepts with the Web Design for Beginners | HTML course.
- no-values: applies all restriction
- allow-forms: Re-enables form submission
- allow-pointer-lock: Re-enables APIs
- allow-popups: Re-enables popups
- allow-same-origin: It allows the content of iframe to be treated as being from same origin
- allow-scripts: Re-enables scripts
- allow-top-navigation: It Allows the content of iframe to navigate its top-level browsing context
Supported Browsers:The browsers supported by HTML IFrame sandbox Attribute are listed below
- Google Chrome 4.0
- Firefox 4.0
- Apple Safari 4.0
- Opera 10.5