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JavaScript
JavaScript—one of the core technologies for Frontend development
JavaScript is one of the most used Frontend technologies together with HTML and CSS.
JavaScript, often called simply JS, is one of the most widely used web technologies for Frontend development alongside HTML and CSS. Whereas HTML provides the structural framework and CSS adds styling to it, JavaScript can do so much more. JavaScript can add dynamic user functionalities to the web page, and without reloading the page, because it is all Frontend.
It works by adding a JavaScript scripting document to the page, which is read, typically when the user clicks a button.
For example, on this page, it is JavaScript which works behind the scenes to change the theme from light to dark by clicking on the lightbulb.
Try it yourself here:
It is also JavaScript which can change the language on the site by clicking on one of the flag icons.
Try this feature here.
The language test now shows English
La prueba de idioma ahora muestra el español
Sprogtesten viser nu dansk
It is fair to say that JavaScript is an extremely useful feature that is used throughout this web application in adding frontend dynamic features to it. JavaScript is also the language behind Sweet Alert, the elegant open-source alert messages used to warn the user about the action he or she is about to take.
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