# Libraries in JavaScript

Programming often involves repetitive tasks. For example, when developing a website, you may need an image slider. Implementing a slider on your own is a rather laborious task, and most importantly, a long one. As a rule, programmers who are faced with such a task try to make an universal code that can be applied not only in the current project, but also in others, saving time.

Programmers put such code into libraries. The library is a JavaScript file that can be connected to an HTML file to get a set of ready-made JavaScript functions that can be used in our project.

There are many libraries that are already created by programmers and made available to the public for general use. Therefore, if you have some kind of voluminous task in front of you, it is always better to first see if there are ready-made libraries that solve this problem.

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