How to Count Number of Clicks on an Element With Vanilla JavaScript

a year ago

Counting the amount of clicks on an element is one of the easiest things you can do with JavaScript. All you need to do is to declare a variable to store your clicks and then use the addEventListener method on your target element. 

Let’s say you want to track the number of clicks on a button element, e.g. a home button. 

The HTML markup

Create an HTML button element and give it a class of button-home:

<button class="button-home">Home</button>

The JavaScript 

Add the following code to your JavaScript file (I’ll explain the code below):

let buttonHome = document.querySelector('.button-home')
let CountButtonHomeClicks = 0

buttonHome.addEventListener('click', function() {
    CountButtonHomeClicks += 1

The result:

Video showing the JavaScript console logging the number of total clicks

I added a bit of CSS styling to the button element above to make it easier to hit.

What’s happening in the JavaScript code:

  • First, we use the querySelector() method to select the button-home class on the button element. Then we assign it to the buttonHome variable.
  • Then we declare the CountButtonHomeClicks variable to store our future clicks. We give it a default initial value of 0.
  • Then we attach an event listener to our buttonHome by using the addEventListener() method.
  • Inside our event listener we specify that we’re listening for 'click' events and that we want to execute a function() on every click event.
  • Inside our function, we specify that want to add 1 to our CountButtonHomeClicks variable everytime the click event is triggered. To add 1, we use the += (plus equals) operator.
  • Finally, we log each click event using console.log() on our CountButtonHomeClicks variable.

Now you know how to count clicks on a specific element.

Good to know:

  • The code above is using ES6 syntax. If you’re using ES5, just replace let with var and it will work the same.
  • The function type we use in this example is called an anonymous function because it doesn’t have a name — unlike function expressions and function declarations.
  • Anonymous functions cannot be reused. If you need call the same function on several events, use a function expression or function declaration.

Get the code

Here’s a CodePen with all the code above.

Has this been helpful?

Do you have any advice or criticism? Let us know in the comments section! :-)

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