do something when function executes Jquery

Question

So I have a function that is recursive for inverting colors. Here is the code:

function invert(id,what){
    var color = $(id).css(what);
    var matchColors         


        

Answer 1

I am not sure what your exact scenario is, but maybe you could override the function with a wrapper:

var invertOriginal = invert;
var counter = 0;

var invert = function(id, what, max) {
  invertOriginal(id, what, max); 

  // do counter stuff here, e.g.
  counter++; 
};

Answer 2

Wrap your function.

var wrapped = (function wrapper(present) {
    function wrapping() {
        ++wrapping.count; // increment invocation count
        return present.apply(this, arguments);
    }
    wrapping.count = 0; // counter, avaliable from outside too
    return wrapping;
}(invert));

If you need to call it invert too, re-assign invert after.

invert = wrapped;
invert.count; // 0
invert();
invert.count; // 1
invert();
invert.count; // 2