TrustedTypePolicyFactory: getPropertyType() method

The getPropertyType() method of the TrustedTypePolicyFactory interface allows web developers to check if a Trusted Type is required for an element's property.

Syntax

getPropertyType(tagName, property)
getPropertyType(tagName, property, elementNS)

Parameters

tagName

A string containing the name of an HTML tag.

property

A string containing a property, for example "innerHTML".

elementNS Optional

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

Return value

A string with one of:

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

Or, null.

Examples

In this example, passing the <div> element and innerHTML attribute to getPropertyType() returns "TrustedHTML".

console.log(trustedTypes.getPropertyType("div", "innerHTML")); // "TrustedHTML"

Specifications

• Trusted Types