JQuery vs JavaScript

Introduction

Every web developer at the start of their career thinks why do I have to learn JQuery and the benefit of JQuery because modern JavaScript can do almost all the tasks that a JQuery does. 

 

So, in this blog, we will find out what JavaScript and JQuery are, their use cases, and how they are different from each other so you can choose whether to learn JQuery or not if you already know JavaScript.

What is JavaScript

JavaScript is a programming language that you execute on your browser. JavaScript provides you with a lot of functionality while working with HTML pages. Some of the essential features of JavaScript are:

  1. It can make your static web pages dynamic/interactive.
  2. It can animate your images and control your media.
  3. It can validate form data in a webpage.

 

We can use JavaScript in many other places, like creating games, building web servers, creating web pages, and building a mobile application.

 

Some Interesting Facts about JavaScript

 

Brendan Eich invented JavaScript in 1995. It became an ECMA standard in 1997. JavaScript is known as the scripting language. As of today, all of the browsers support JavaScript.

In JavaScript, you can start your statement with a semicolon(;).

Example:  ;var a = 2

Equal is not always equal in JavaScript. What does that mean? In JavaScript the “==” operator is used when you have to compare two values, and the “===” operator is used when you have to compare their values as well as their data types.

What is JQuery

JQuery is a feature-rich open-source library of JavaScript which is included in a single .js file. JQuery was more popular before advanced JavaScript came into play. JQuery provides you with many inbuilt functions which you can use to accomplish various tasks with less effort and with much more speed.

Why use JQuery?

Cross-browser support - JQuery provides you with excellent cross-browser support without writing much code.

 

Readable code- JQuery gives you many features and uses them. you can write readable code.

 

Easy to learn- JQuery supports the same coding style as JavaScript, making it easy to understand if you already know JavaScript.

Important Features of JQuery

 

Ajax: JQuery includes easy-to-use AJAX functions that load data from servers without reloading the whole page.

 

DOM Selection: JQuery gives you Selectors to retrieve DOM elements based on criteria like tag name, id, class name, attribute name, value, etc.

 

DOM Manipulation: You can manipulate DOM elements using various built-in JQuery functions. For example modifying Html content, CSS class, etc.

Difference between JQuery and JavaScript

Some examples of how to use JQuery and JavaScript for the same task

 

  1. To find HTML Element by Id.
JQuery:  myEle = $("#123");
JavaScript:  myEle = document.getElementById("123");

 

2. To find HTML Elements by Tag Name.

JQuery: myEle = $("p");
JavaScript: myEle = document.getElementsByTagName("p");

 

3. To find HTML Elements by Class Name.

JQuery: myElements = $(".myClass");
JavaScript: myElements = document.getElementsByClassName("myClass");

 

Frequently Asked Question

 

How are id and class attributes of HTML elements different from each other?

Answer - Multiple elements can have the same class, but only one id can be assigned to one element of HTML.

 

How can we change an inline element to a block-level element in CSS?

Answer-  By setting the value of the “display” property to “block.”

 

Difference between <link> and <a>?

Answer- Using <a> anchor tag, we can create a hyperlink to another web page, whereas <link> link tags are used to create a link between document and external resource.

 

Which of them is clickable <a> or <link>?  

Answer- <a> anchor tag is clickable.

 

What to do if we have to include audio and video in a webpage? 

Answer- By using <audio> tag, we can add audio, and by using <video> tag, we can add a video to the webpage.

Key Takeaways

This blog contains information about JQuery and JavaScript and how they are different from each other. If you are interested in JavaScript and want to become a great web developer, check out this amazing JavaScript course on web development.

 

Also, if you are preparing for interviews, visit this JavaScript interview question blog.

Happy Reading!

 

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