Difference Between JavaScript and JQuery

Difference Between JavaScript and JQuery


  • JavaScript uses JIT[Just in Time Compiler] which is a combination of interpreter and Compile and is written in C. It’s a combination of ECMA script and DOM (Document Object Model).
  • JavaScript uses long lines of code as an individual has to write the code own-self.
  • In JavaScript, we have to write extra code or move around to have cross-browser compatibility. JQuery has an inbuilt feature of cross-browser compatibility.
  • JavaScript can be a burden on a developer as it may take several lines of lengthy code to attain functionality.
  • JavaScript can be a burden on a developer as it may take several lines of lengthy code to attain functionality.
  • JavaScript is verbose because one has to write their own scripting code which is time-consuming.
  • Pure JavaScript can be faster for DOM selection/manipulation than jQuery as JavaScript is directly processed by the browser and it curtails the overhead which JQuery actually has.
  • We can make animations in JavaScript with many lines of code. Animations are mainly done by manipulating the style of an Html page.
  • JavaScript is a language, obviously, it would be heavier than JQuery.
  • JavaScript is an independent language and can exist on its own.



  • While JQuery Uses the resources that are provided by JavaScript to make things easier. It is a lightweight JavaScript library. It has only the DOM.
  • With JQuery, one has to write fewer lines of code than JavaScript. We just need to import the library and use the only specific functions or methods of the library in our code.
  • We don’t need to worry about writing extra lines of code or move around to make our code compatible with any browser.
  • Unlike JavaScript, JQuery is more user-friendly only a few lines of code have to write to have its functionality.
  • JQuery is concise and one need not write much as scripting already exists.
  • JQuery is also fast with modern browsers and modern computers. JQuery has to be converted into JavaScript to make it run in a browser.
  • In JQuery, we can add animation effects easily with fewer lines of code.
  • While JQuery is a library, derived from JavaScript hence, it is lightweight.
  • JQuery is a JavaScript library. It would not have been invented had JavaScript was not there. jQuery is still dependent on JavaScript as it has to be converted to JavaScript for the browser in-built JavaScript engine to interpret and run it.


javaScript: It is a major scripting programming language that is used to make websites more responsive and interactive. It is one of the pivoted parts alongside HTML and CSS which are used to create web pages. If HTML And CSS decorate and designed the web pages so, Javascript makes the web pages dynamic we can say it gives them life. JavaScript is a major client-side language. It’s not only confined to websites development but also used in many desktop and server programs ( Node.js is the best-known example) and Some databases, like MongoDB and CouchDB, also use JavaScript. Whenever your browser parses a web page, its responsibility is to create a tree-structure presentation in memory.





<p>A loop with a <mark>continue</mark> statement.</p>      

<p>loop will skip the iteration where k = 7.</p> 

        <p id=”maddy”></p>  

            var text = “”;

            var k;

            for (k = 0; k < 10; k++) {

                if (k === 7) {



                text += “The number is ” + k + “<br>”;


            document.getElementById(“maddy”).innerHTML = 



A loop with a continue statement.

the loop will skip the iteration at k = 7.

The number is 0

The number is 1

The number is 2

The number is 3

The number is 4

The number is 5

The number is 6

The number is 8

The number is 9


JQuery: JQueray is a framework for javaScript which developed from JavaScript. It is the most popular JavaScript library invented by John Resign and was released in January 2006 at BarCamp NYC. It is a free, open-source library and It’s a fast, concise, and rich-featured JavaScript library and also has cross-browser compatibility. The purpose of jQuery is to make life easier for the masses so that they can easily develop websites and browser-based applications using javaScript. Concisely, we can say that the “JQuery is a library to provide better client-side web page development” environment to the developer with the help of its feature-rich library.


  • DOM manipulation: DOM elements can be easily traversed, modified.
  • Animations Lots of built-in features for animations.
  • HTML event handling and manipulation.
  • Ajax is much simpler with an easy-to-use API that works across a multitude of browsers.
  • CSS manipulation
  • Has a high-level UI widget library.
  • Cross-browser support: work well on browsers like Chrome, Opera etc.
  • Lightweight: Only 19kb in size.
  • And other common utilities





            $(document).ready(function () {

                $(“#hide”).click(function () {



                $(“#show”).click(function () {






On clicking the “Hide_me” button, I will disappear.


        <button id=”hide”>Hide_me</button>

        <button id=”show”>Show_me</button>


Output: As we click on the Hide_me button the above-marked heading will disappear, but as soon as we click on the Shoe_me button it’ll again appear.



Key differences between JavaScript and JQuery are as follow :


jQuery JavaScript
It is a javascript library. It is a dynamic and interpreted web-development programming language.
The user only need to write the required jQuery code The user needs to write the complete js code
It is less time-consuming. It is more time-consuming as the whole script is written.
There is no requirement for handling multi-browser compatibility issues. Developers develop their own code for handling multi-browser compatibility.
It is required to include the URL of the jQuery library in the header of the page. JavaScript is supportable on every browser. Any additional plugin need not be included.
It depends on JavaScript as it is a library of js. jQuery is a part of javascript. Thus, the js code may or may not depend on jQuery.
It contains only a few lines of code. The code can be complicated, as well as long.
It is quite an easy, simple, and fast approach. It is a weakly typed programming approach.
jQuery is an optimized technique for web designing. JavaScript is one of the popular web designing programming languages for developers that introduced jQuery.
jQuery creates DOM faster. JavaScript is slow in creating DOM.


Although jQuery is a part of JavaScript, there can be following certain differences between them:

This article is mainly for those developers who are new to web development. People who start their career usually question – why jQuery while there is JavaScript; or the difference between JavaScript and jQuery; which is better to use – JavaScript or jQuery; is jQuery an alternative for JavaScript; or will jQuery replace JavaScript, etc.


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