💻 What is jQuery?
jQuery is a **fast, small, and feature-rich** JavaScript library. It simplifies things like **HTML document traversal and manipulation**, **event handling**, and **animation**, making it much easier to work with JavaScript.
1️⃣ Why Use jQuery?
✅ **Cross-browser Compatibility**: jQuery makes it easier to ensure your code works across different browsers without worrying about compatibility issues.
✅ **Simplified Syntax**: jQuery simplifies the syntax of JavaScript, making tasks like DOM manipulation, event handling, and Ajax calls much easier to implement.
✅ **Animations**: It offers built-in methods for creating **smooth animations** and effects that can be applied to any element on a page.
✅ **Event Handling**: With jQuery, you can handle **events** like clicks, form submissions, and mouse movements with much less code.
✅ **AJAX Support**: jQuery makes it simple to make **AJAX requests**, allowing you to load data asynchronously without reloading the page.
2️⃣ Key Features of jQuery 🔑
✅ **DOM Manipulation**: jQuery allows you to easily select and manipulate HTML elements using **CSS selectors**.
✅ **Chaining**: You can chain jQuery methods together, allowing for more compact and readable code.
✅ **Deferred Objects**: jQuery’s promise-style objects make it easier to work with **asynchronous operations**.
✅ **Plugins**: There are countless jQuery plugins available that extend the library’s functionality, from slideshows to advanced UI components.
3️⃣ Example of jQuery Code ⚙️
“`javascript
$(document).ready(function(){
$(“button”).click(function(){
$(“p”).text(“Hello, world!”);
});
});
jQuery is a quick and brief JavaScript Library. jQuery improves HTML archive navigating, occasion dealing with, quickening, and Ajax associations for fast web advancement. jQuery is a JavaScript toolbox intended to streamline different errands by composing less code. Here is the rundown of critical center highlights upheld by jQuery −
There are two approaches to utilize jQuery.
Section Installation − You can download jQuery library on your nearby machine and incorporate it into your HTML code.
CDN Based Version − You can include the jQuery library into your HTML code specifically from Content Delivery Network (CDN).
Section Installation
Go to the https://jquery.com/download/to download the most recent variant accessible.
Presently put the downloaded jquery-2.1.3.min.js document in an index of your site, e.g. /jquery.
jQuery is a structure made using JavaScript abilities. In this way, you can utilize every one of the capacities and different abilities accessible in JavaScript. This part would clarify most fundamental ideas yet much of the time utilized as a part of jQuery.
Jquery gives several benefits in the format of $(namespace). These strategies are used to finish the programming tasks.a few of the utility techniques are as show beneath.
$.trim()
$.trim() is utilized to Removes driving and trailing whitespace
$.trim( ” heaps of additional whitespace ” );
$.each()
$.each() is utilized to Iterates over exhibits and questions
$.inArray()
$.inArray() is utilized to Returns an esteem’s file in an exhibit, or – 1 if the esteem isn’t in the cluster.
$.extend()
$.extend() is utilized to Changes the properties of the main protest utilizing the properties of consequent items.
$.proxy()
$.proxy() is utilized to Returns a capacity that will dependably keep running in the gave scope — that is, sets the importance of this inside the passed capacity to the second contention.
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