If jQuery is made up of JavaScript syntax at its core, why browser support was added explicitely for it?

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On many places, I found that jQuery is made on top of JavaScript. So the browser that supports JavaScript would definitely support jQuery.

But the page on Wiki https://en.wikipedia.org/wiki/Comparison_of_JavaScript_frameworks#Browser_support suggests browser support was added at its specific version. I am also confused on the statement at https://en.wikipedia.org/wiki/JQuery#Browser_support

May be I am unnecessarily confused, but this is a bit causing me headache.

Can anyone please tell me about this?

1 Answers

JavaScript: It supports directly. we don't require to add any library file.

Jquery: While we are using jquery, we have to add jquery library file. Without library, browser won't understand jquery script. Each library version, covers new feature of browser. so based on broswer version, we can use specific version's jquery library.

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