JS checkbox trigger/click/onclick doesn't work

I have a problem triggering a click event.

This is the code which should be called by the "click":

$('#enable_autosave').click(function () {
    alert("HI");
});

The HTML code:

<input type="checkbox" id="enable_autosave">Test</input>

And this is the code which should trigger the checkbox' click-event after loading the page:

$('#enable_autosave').trigger('click');

The checkbox gets checked but the click-event isn't fired. I also tried .click() or .onclick() or $('#enable_autosave').attr('checked', true)[0].onclick();

But they all show the same result, the checkbox gets checked but not click-event.