What is the difference between JavaScript and jQuery? [closed]

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jQuery is a JavaScript library.

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wiki-jQuery, github, jQuery vs. javascript?

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What is JQuery?

Before JQuery, developers would create their own small frameworks
(the group of code) this would allow all the developers to work around all
the bugs and give them more time to work on features, so the
JavaScript frameworks were born. Then came the collaboration stage,
groups of developers instead of writing their own code would give it
away for free and creating JavaScript code sets that everyone could
use. That is what JQuery is, a library of JavaScript code. The best
way to explain JQuery and its mission is well stated on the front page
of the JQuery website which says:

JQuery is a fast and concise JavaScript Library that simplifies HTML
document traversing, event handling, animating, and Ajax interactions
for rapid web development.

As you can see all JQuery is JavaScript. There is more than one
type of JavaScript set of code sets like MooTools it is just that
JQuery is the most popular.

JavaScript vs JQuery

Which is the best JavaScript or JQuery is a contentious discussion,
really the answer is neither is best. They both have their roles I
have worked on online applications where JQuery was not the right tool
and what the application needed was straight JavaScript development.
But for most websites JQuery is all that is needed. What a web
developer needs to do is make an informed decision on what tools are
best for their client. Someone first coming into web development does
need some exposure to both technologies just using JQuery all the time
does not teach the nuances of JavaScript and how it affects the DOM.
Using JavaScript all the time slows projects down and because of the
JQuery library has ironed most of the issues that JavaScript will
have between each web browser it makes the deployment safe as it is
sure to work across all platforms.

JavaScript is a language. jQuery is a library built with JavaScript to help JavaScript programmers who are doing common web tasks.

See here.

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