Hackforge Academy

Category: javascript

what is jquery

Published on 22 Apr 2026

Explanation

jQuery is a fast, lightweight JavaScript library that simplifies HTML document manipulation, event handling, animations, and AJAX interactions.

Code:

<script src="
https://code.jquery.com/jquery-3.6.0.min.js"
></script>

Explanation

jQuery makes it easier to select and manipulate HTML elements using a simple selector syntax compared to plain JavaScript.

Code:

// jQuery
$("#title").hide();

// JavaScript

document.getElementById("title").
style.display = "none";

Explanation

jQuery simplifies event handling like clicks, hover effects, and form submissions with shorter syntax.

Code:

$(document).ready(function() {
  $("button").click(function() {
    alert("Button clicked!");
  });
});

Explanation

jQuery provides built-in animation methods for UI effects such as fade, slide, and toggle.

Code:

$("#box").fadeOut();

Explanation

jQuery simplifies AJAX requests to communicate with servers without refreshing the page.

Code:

$.ajax({
  url: "data.json",
  method: "GET",
  success: function(response) {
    console.log(response);
  }
});

Explanation

jQuery handles cross-browser compatibility issues automatically, making development easier across different browsers.

Code:

// Same jQuery code works across Chrome,
 Firefox, Edge, etc.

Explanation

Although modern JavaScript has replaced many jQuery use cases, it is still used in legacy projects and quick DOM manipulation tasks.

Code:

// Example legacy usage
$("p").addClass("highlight");

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