This function attaches an event to an object. For example, you can attach a “click” event to a button. The same can be accomplished by assigning the onclick property on a button; however, with the addEvent() function, you can attach multiple unrelated “click” events to the same object.
Parameters:
- obj – the object or element to which the event will be applied
- eventName – the event name. Example: “click”, “mouseover”, etc.
- func – the event handler function
Examples:
The following code assigns an event to a button.
// get the button object
var myButton = getObj("my_button");
// assign the greeting() function as an event handler
addEvent(myButton, "click", greeting);
function greeting()
{
alert("Hello There!");
}
Alternatively, an anonymous function can be used when assigning the event.
// get the button object
var myButton = getObj("my_button");
// assign anonymous function as an event handler
addEvent(myButton, "click", function ()
{
alert("Hello There!");
});