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As a JavaScript developer, understanding the intricacies of event handling is crucial for creating robust and responsive web applications. One fundamental concept you need to grasp is the difference between the capturing and bubbling phases of event propagation.
In this article, we’ll dive deep into these two phases, explore their implications, and provide you with practical code examples to help you master this essential aspect of JavaScript.
The Capturing Phase
The capturing phase is the first stage of event propagation, where the event travels from the window object down to the target element. During this phase, the event is captured by each ancestor element, starting from the window and moving down the DOM tree.
This means that if you have a button nested within a div, which is nested within the body, the event will be captured by the body, then the div, and finally the button. Here’s an example of how the capturing phase works:
// HTML
<body>
<div>
<button>Click me</button>
</div>
</body>
// JavaScript
document.body.addEventListener('click', () => {
console.log('Body captured the…
