event listener

If you want to add an event listener to multiple elements in JavaScript, there are a couple of approaches you can take. In this article, we will explore two methods: using a loop and leveraging event bubbling. Method 1: Using a Loop The first method involves using a loop to iterate over the elements and attach the event listener individually. Here’s an example: document.querySelectorAll('.some-class').forEach(item => { item.addEventListener('click', event => { // handle click }); }); In the above code, querySelectorAll() is used to select all elements with a specific class....

Learn how to execute JavaScript code as soon as the DOM is ready, without any delay. To achieve this, you can add an event listener to the document object for the DOMContentLoaded event: document.addEventListener('DOMContentLoaded', (event) => { // Code to be executed when the event occurs }) Usually, arrow functions are not used for event callbacks because they don’t have access to the this keyword. However, in this case, we don’t need to worry about it because this always refers to the document object....