What are the major differences between JavaScript and jQuery?

Question

I intend to build a dynamic website using Drupal CMS. Some webpages need to be dynamic. and I am learning JavaScript to make them. should I also learn jQuery for this? can someone give examples of jQuery and JavaScript uses ?

Answer 1

Look at it in a similar light to a steering wheel (jQuery) and the car (JS). Without a steering wheel the car is much more cumbersome to turn, not impossible, but you'd need to expend more effort. The steering wheel itself cannot move you and your luggage around though, it needs the car to do that.

In the same way jQuery is just a collection of pre-made parts in JS which you call so that you can do certain things easier than you would otherwise have done by implementing them yourself. I.e. it's like getting a steering wheel for your car instead of building one yourself.

That is basically what all sorts of libraries in nearly all languages are ... collections of pre-made code which you can then call to do specific actions for you instead of you needing to re-invent all that code yourself.

In particular jQuery helps you to interoperate with the different parts of a web page, perform actions on specific events, send/receive data without needing to reload the entire page, etc. Those you could have done through basic JS, just that you'd need reams of extra code where JQ tends to turn it into a handful of lines instead. Another thing which JQuery does for you is to handle the inconsistencies a browser may have - this used to be a big headache especially with Internet Explorer.

Also, just like you can get different sizes, shapes, colours, finishes, etc. of steering wheels, you get alternatives to JQuery. Popular JQuery alternatives. They all still work on top of JS, it's just that you reuse a different set of pre-made code to do the same stuff.

Answer 2

jquery is a javascript library that makes our life easier instead of dealing with pure javascript

Answer 3

JS is a programming language while JQuery is a library (framework) and is included in JS to make things easier. ✌

Answer 4

as far as I know jquery is a framework for make every things easier for javascript programmer

Answer 5

with jquery, long scripts that you would need to type is already done for you. you just need to tell the application where to look. for instance to hide an element with pure javascript you would need to select the element: var demo = document.getElementById('demo'); then hide it like this: demo.style.display = none; with jquery: $('#demo').hide(); c
lean, simple, beautiful.

Answer 6

Just think jQuery as Javascript library which we have to include at the beginning of program to make some functions easier just like including header file in case of C programming..

Answer 7

I think now its clear to you

Answer 8

jQuery is one of the library in JavaScript..

Answer 9

folks said is correct

Answer 10

JavaScript makes the page work. EVERYTHING works within JavaScript.
However, JavaScript sets some restrictions. Since any reference that is not reserved as a keyword and isn't defined in the same line is counted as a variable, then JavaScript cannot use a special reserved character like jQuery does.
Example:
#("someElement").someCommand;
//Produces:
Uncaught ReferenceError:
# is not defined
So, jQyery was created to GIVE JS the ability to be easier.
Ex. 1:
document.getElementById("whatever");
becomes $("#whatever")
Ex. 2: With JS, to fade an element out, you have to set an Interval of 100 ms w/ a function subtracting 0.1 opacity. But, with jQuery, it's:
$("#whatever").fadeOut(1000);

Answer 11

Consider Jquery a framework, which let you to use javascript but in a different way, cause Jquery is just a framework based on javascript, and jquery isn't a language. Jquery offers a simple understand of javascript and its utility.

Answer 12

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Answer 13

Jquery is the JavaScript library where you can find readymade complex codes which is written on JavaScript and can be downloaded from internet and all you have to know is how to implement those codes on you application.

Answer 14

JS is a language, JQuery is a framework tool made it from JS.

Answer 15

jQuery is JavaScript library, i.e. the same language. The difference is jQuery contains cross browser tools to operate with dynamic content on client side.
Without jQuery you have to implement same task in different JavaScript code for each browser you want to be supported.

Answer 16

Major differences between Javascript and jQuery are;
1) Javascript is a programming language, while jQuery is a Javascript library.

2) Javascript codes are longer than jQuery codes. (i.e, jQuery is a simpler way to write Javascript)

Example of Javascript: document.getElementById("myId")
Example of jQuery: $("myId")

Answer 17

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