index.md

title	short-title	slug	page-type	browser-compat
TrustedTypePolicyFactory: getPropertyType() method	getPropertyType()	Web/API/TrustedTypePolicyFactory/getPropertyType	web-api-instance-method	api.TrustedTypePolicyFactory.getPropertyType

{{DefaultAPISidebar("Trusted Types API")}}

The getPropertyType() method of the {{domxref("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_inline}}
  • : 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 {{htmlelement("div")}} element and innerHTML property to getPropertyType returns "TrustedHTML".

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

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}