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What is JavaScript?

by Iwan Price-Evans on Web technology • May 16, 2022

JavaScript is an object-oriented scripting language that allows you to add interactivity to websites. It’s also used in many other applications, such as video games, mobile apps, and desktop programs. It was developed by Netscape Communications Corporation and released as open source software on August 9, 1995.

Why should I care about JavaScript?

If you’re building a website, chances are you’ll need some sort of code to make it work properly. JavaScript is one of those codes, along with HTML and CSS. You use it to add interactivity to your site, so users can navigate through your site more easily.

What is JavaScript good for?

JavaScript is a programming language that allows you to write scripts that run within websites. These scripts allow you to do things like display images, play sounds, animate objects, provide interactive tools, change the way the page behaves under certain conditions, and more.

Where did JavaScript come from?

JavaScript is a scripting language that was originally designed to work with HTML (Hypertext Markup Language). This means that it was written specifically to make it easier to add interactivity to web pages. In fact, JavaScript was first introduced in 1991 when Netscape Navigator 1.0 was released.

What is the difference between JavaScript and Java?

JavaScript is a programming language that allows developers to write code that runs within a browser window. It is similar to other languages such as Java, C++, PHP, and Perl. However, unlike these other languages, JavaScript is not compiled into machine code before being executed. Instead, it is interpreted at runtime.

JavaScript is also known as ECMAScript because it is based on the same standard as the original version of JavaScript. This standard is called ECMA-262.

How do I reduce the size of JavaScript files?

Large JavaScript files increase the time taken to load a web page. Multiple JavaScript files increase the number of requests to load a web page, which also increases the load time. This affects your website's Google PageSpeed score.

You can reduce the affect of JavaScript on your website's performance by reducing the size and number of your JavaScript files.

You can reduce the size of your JavaScript files by minifying them. Minifying removes white space and other unnecessary characters without removing functionality. The resulting output is very efficient, similar to a compressed image file.

You can reduce the number of your JavaScript files by combining them into one file. This reduces the number of requests between a user's web browser and your web servers.

You can automatically minify and combine JavaScript files using a web accelerator.