JavaScript is a scripting language that helps you build interactive web pages. The idea behind developing the JavaScript was to make it a complementary scripting language like Visual Basic was to C++ in Microsoft’s language subdivisions.

First, JavaScript was not designed for large complex web applications. That is why it was not an object-oriented language like Java, C++, or PHP. Before ES2015, Javascript relied on prototype-based architecture and did not support classes.

Javascript is used in the HTML pages, which will be executed automatically as the page loads.

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