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JavaScript HTML DOM Events

JavaScript HTML DOM Events

JavaScript DOM events trigger code when users interact with the DOM.

Read Time
5 min read
Difficulty
Beginner
Last Updated
Jun 15, 2026
Version
v1.0.0

Introduction

JavaScript attaches event listeners directly to the DOM elements. Instead of using `onclick` in the HTML file, developers use JavaScript to listen for clicks behind the scenes. This keeps the HTML file clean and strictly focused on structure.

Example

Example
1/* this attaches an event listener */
2let btn = document.getElementById("myBtn");
3btn.addEventListener("click", function() {
4  alert("Button was clicked!");
5});

Key Points

  • `addEventListener()` attaches an event to an element.
  • You can attach multiple events to the same element.
  • It keeps JavaScript completely separate from HTML.
  • `removeEventListener()` removes the event listener later.

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