How to find if function is on or off

Question

I have 5 elements with a class foo. and a function is attached with them like this

$('.foo').on('click',someFunction)

But for one of function is off(). I want to loop through these elements and find that element for which function is off. Can anyone tell me how to achieve this.

What do you mean by "But for one of them function is off()"? Do you want to know which element doesn't have `someFunction` click handler? — Ram, Sep 17 '15 at 12:10
possible duplicate of [jQuery to loop through elements with the same class](http://stackoverflow.com/questions/4735342/jquery-to-loop-through-elements-with-the-same-class) — Francesco de Guytenaere, Sep 17 '15 at 12:12
@Vohuman when I click one element with foo class, function runs `someFunction` and makes `$(this).off('click',someFunction)`. Now I want to get this clicked element. — Nafees Anwar, Sep 17 '15 at 12:14

Ram · Accepted Answer · 2015-09-17T20:36:30.423

You say that you unbind the handler the element is clicked, so this keyword already refers to that element! You can store the clicked elements in array or a jQuery collection using jQuery.prototype.add method and use them whenever you need.

Another option is an adding an identifier (e.g. a class name) to the element:

$(this).off('click', someFunction).addClass('bar');

Now you can simply get the target elements by using:

$('.foo.bar');

score 0 · Answer 2 · answered Sep 17 '15 at 12:46

If you want to refer to this element in another function or somewhere else in the script, just use a global variable (either a string for the last or an array for all "click-ignoring" element/s) and store it in there maybe like this:

var lastClickedElement = "";
$(".foowrap .foo").each(function(){
    $(this).on("click", function(){
        $(this).off("click");
        lastClickedElement = $(this);
    });
});

or, if you don't want to store the whole element, you can just store it's index. to do so, replace lastClickedElement = $(this); with lastClickedElement = $(this).index();. You could then just refer to it as $(".foowrap .foo").index(lastClickedElement).

How to find if function is on or off

2 Answers2