Event.isTrusted

The isTrusted read-only property of the Event interface is a boolean that is true when the event was generated by a user action, and false when the event was created or modified by a script or dispatched via dispatchEvent.

Syntax

var bool = event.isTrusted;

Example

 if (e.isTrusted) {
     /* The event is trusted. */
 } else {
     /* The event is not trusted. */
 }

Specification

Specification	Status	Comment
DOM The definition of 'Event.isTrusted' in that specification.	Living Standard
Document Object Model (DOM) Level 3 Events Specification The definition of 'Trusted events' in that specification.	Working Draft	Adds requirements regarding trusted and untrusted events, though it does not itself define the isTrusted property.
DOM4 The definition of 'Event.isTrusted' in that specification.	Recommendation	Initial definition.

Browser compatibility

[1] Starting with Chrome 53, untrusted events do not invoke the default action.

[2] In Internet Explorer, all events are trusted except those that are created with the createEvent() method.