attachEvent

Subscribes to the specified event and calls the callback function when the event fires.

Syntax

expression.attachEvent(eventName, callback);

expression - A variable that represents an Api class.

Parameters

Name	Required/Optional	Data type	Default	Description
eventName	Required	string		The event name.
callback	Required	function		Function to be called when the event fires.

Returns

This method doesn't return any data.