Menu
I just downloaded the latest version of jQuery via npm install jquery and it includes three uncompressed files namely:
dist/core.js
dist/jquery.js
dist/jquery.slim.js
I'm wondering what the core.js file is and couldn't find anything documented about it. A google search on core.js and jquery core.js don't return relevant answers.
Also, I don't see any core.min.js. So what is it? Would I ever use it?
NOTE: It uses define() which requires an AMD loader (see https://requirejs.org/docs/whyamd.html#definition ) so it can't just be included straight into an html file.
One jQuery CDN is at https://code.jquery.com, but it doesn't include core.js (from what I saw).
Looking at the code it only defines a small number of functions some of which are:
extend, each, map, slice, first, last, eq, end
It looks like these are also defined in jquery.js and jquery.slim.js.
The jQuery documentation for core at https://api.jquery.com/category/core/ doesn't match what is in the core.js file.
957
jQuery is a fast, small, and feature-rich JavaScript library. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers.
In jQuery, the $ sign is just an alias to jQuery() , then an alias for a function. This page reports: Basic syntax is: $(selector).action() A dollar sign to define jQuery. A (selector) to "query (or find)" HTML elements.
In simple terms, it's a minified/compressed version of the JQuery code. Minification is nothing but a process to reduce the size of the file by eliminating spaces, line breaks, comments, variable names, function names, etc. so that the file can be rendered quickly by the performance.
core.js is responsible for defining the jQuery namespace, as well as the prototype for jQuery objects. - How jQuery Works - An Introduction
This below may also be quite useful or at least help you get a better understanding, but to be honest the quote above i would argue is sufficient enough knowledge on the core.js file.
It’s no longer maintained with newer versions, but a few years ago Rob Flaherty created an annotated version of jQuery 1.6’s source.
jQuery v1.6 Annotated Source Docs
Core.js Annotated Source
112
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
