Is there any way to tell if an event handler was triggered with code in jQuery without custom flags?

Consider this jQuery code:

$('button#my').click(function(event) {
    alert('hello');
});

$('button#my').click();

Obviously, this will bring up an alert window.

However, can I tell, with jQuery only, if that开发者_JAVA百科 event handler was triggered with code or if the user clicked it (without ugly flag checking, e.g. var userClicked = true).

I thought there would be a property of event, but I couldn't figure it out.

Is this possible?

You can check event.which, it'll be undefined for the .click() (or other trigger) calls...for example:

$('button#my').click(function(event) {
    if(event.which) {
        alert("User click");
    } else {
        alert("triggered click");
    }
});

You can give it a try here.

I just tried it out and there are many differences between them; have Firebug and try $("button#my").click(console.log) and you'll see the event logged when you click or click(). One is event.currentTarget which is the element when clicked, or document when click()ed (may be subject to change based on the scope it's called in, experiment). There are all sorts of other differences too - (offset|client|layer)[XY] are all set for click but not click(), and more.

(Edit: as Nick says, event.which is another; it's 1 for click and not defined for click().)

Late answer. Nick's answer would work, but you can do it in a little more explicit manner.

You can define your .click() with additional parameters, and pass those parameters by using .trigger('click') instead of .click().

Example: http://jsfiddle.net/patrick_dw/jWFAn/

// Passed via .trigger() ----------------v
$('button#my').click(function(event, wasManual) {
    if( wasManual ) {
        alert('triggered in code');
    } else {
        alert('triggered by mouse');
    }
});

  // Array of additional args------v
$('button#my').trigger( 'click', [true] );

This way it is using an explicit feature of jQuery in its supported manner.