Finally, the "if" statement got replaced with a conditional operator statement. Also, we can see that Boolean "true" (which takes 8 bytes) was converted to "!0" (4 bytes). It is a simple change but saved us few bytes. First of all, you can see that all unnecessary characters, like whitespaces, line breaks, and curly brackets removed. This code snippet can be converted to the following if minified: var isFriendly=!0 isFriendly&console.log("Hello world") Here’s the simple one that illustrates how JavaScript minification works: var isFriendly = true The best way to understand js minification is to look at some examples. Benefits are predictable – faster page loads lead to better accessibility that enhances user experience and search engines ranking site better. In some cases, minification can save up to 80% of the javascript file size.
Minification stands by reducing source code size by converting it to the optimized version removing unnecessary characters, comment blocks, shortening local variables and function names. One of the tasks of asset optimization is deliverable code minification. That’s where asset optimization is helping us. The most popular search engine cares (at least they claim) about user experience, and it counts bandwidth size and page load time when ranks websites in the search feed. JavaScript source code bloated to megabytes, and that has got a real pain for internet surfers, especially for mobile users, who are connecting through low 3g. At the same time, users started using mobile devices more often than ever before. There are two that they can hardly manage: bandwidth size and user connection speed score.ĭuring the latest decade, web applications got more complex than ever before. When it comes to websites and web applications, developers are facing many restrictions. Now it is widely using on servers, mobile devices, and even desktops. It started as a scripting language for websites. What is JavaScript minification?įor many years JavaScript was developing and upgrading as a programming language.
de also includes helpful resources, best practices, configuration examples, and usage guides related to the JavaScript minification process. The minify js tool uses the Terser utility that is compatible with the ES6+ standard. is an online tool that allows you to reduce the size of JavaScript code up to 80%.
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