TrustedTypePolicyFactory.getAttributeType()

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

var attributeType = TrustedTypePolicyFactory.getAttributeType(tagName,attribute[,elementNs,attrNs]);

Parameters

tagName
A string containing the name of an HTML tag.
attribute
A string containing an attribute.
elementNsOptional
A string containing a namespace, if empty defaults to the HTML namespace.
attrNsOptional
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".

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

Specifications

Specification Status Comment
Trusted Types
The definition of 'TrustedTypePolicyFactory.getAttributeType()' in that specification.
Editor's Draft Initial definition.

Browser compatibility

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