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TrustedTypePolicyFactory: getAttributeType() method

The getAttributeType() method of the TrustedTypePolicyFactory interface allows web developers to check if a Trusted Type is required for an element, and if so which Trusted Type is used.

Syntax

js

getAttributeType(tagName, attribute)
getAttributeType(tagName, attribute, elementNS)
getAttributeType(tagName, attribute, elementNS, attrNS)

Parameters

tagName

A string containing the name of an HTML tag.

attribute

A string containing an attribute.

elementNS Optional

A string containing a namespace, if empty defaults to the HTML namespace.

attrNS Optional

A string containing a namespace, if empty defaults to null.

Return value

A string with one of:

  • "TrustedHTML"
  • "TrustedScript"
  • "TrustedScriptURL"

Or, null.

Examples

In this example, passing the <script> element and src attribute to getAttributeType returns "TrustedScriptURL".

js

console.log(trustedTypes.getAttributeType("script", "src")); // "TrustedScriptURL"

Specifications

Specification
Trusted Types
# dom-trustedtypepolicyfactory-getattributetype

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
getAttributeType 83 83 No No 69 No 83 83 No 59 No 13.0

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https://developer.mozilla.org/en-US/docs/Web/API/TrustedTypePolicyFactory/getAttributeType