What is JavaScript and Where Can I Learn It?

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Unbeknownst to most of us, we all make heavy use of JavaScript dozens of times a day. From desktop computers and mobile phones to smart TVs and even modern cars, nearly every connected device we use on a daily basis makes heavy use of JavaScript to help us browse the web and live out our digital lives.

In spite of the ubiquity of JavaScript you may still be wondering, “What is JavaScript, exactly?” (Just to clarify, JavaScript is not Java.)


At its core, JavaScript is a programming language which is used to facilitate interactions between a user’s web browser and the website or service the user is visiting. Virtually every aspect of the browsing experience — from the visual look and feel of a site to the underlying information that represents the movie titles being displayed on sites like Netflix — can be altered within the browser using JavaScript.

By being able to interact with every object that makes up a web page, JavaScript can perform some very magical tasks. Even so, the most mundane uses of JavaScript are witnessed by users so frequently that many people may not even realize JavaScript is under the hood. Common implementations of JavaScript include: confirming that the user has entered a properly formatted email address into a form; automatically placing the text cursor into a search box when loading a page like Google.com; or loading small sections of a page, such as the next series of movies in a list, without the need to reload the entire page.

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