The browser console has a count method

When debugging or analysing JavaScript, you often see people trying to find out how often a certain function is called. The common way to do that is to use a global counter variable to increment and log in the function. var i = 0; function test(){ // other functionality i++; console.log(i); // other functionality } […]


This content originally appeared on Christian Heilmann and was authored by Chris Heilmann

Count von count from Sesame Street

When debugging or analysing JavaScript, you often see people trying to find out how often a certain function is called. The common way to do that is to use a global counter variable to increment and log in the function.


var i = 0;
function test(){
// other functionality
i++;
console.log(i);
// other functionality
}

There is, however, a better method. The Console of the browser has a `count()` and `countReset()` method that event takes a label. That means you can avoid the global.


function bettertest(){
console.count(‘bettertest’);
}

You can see it in action in this screencast.

Screencast of the two ways to count how often a method was called in comparison

This is part of the standard Console API and should be supported in all browsers.


This content originally appeared on Christian Heilmann and was authored by Chris Heilmann


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