This event can be sent to any element associated with a URL: images, scripts, frames, iframes, and the window object. Use of the jQuery ().load() as an IMG event handler isnt guaranteed. If the image loads from the cache, some browsers may not fire off the event. Depending on the browser, the load event may not trigger if the image is cached (Firefox and IE). Note: There is also a jQuery AJAX method called load(). Which one is called, depends on the parameters. Jquery Window Load Event.