The minified version of JavaScript code can reduce the file size by as much as 30–90%. To regain space and improve your page load speed, you must minify the JavaScript code. On that road, they tend to use lots of comments, spacing, and variables to make the code more readable for others working with it in the future.ĭespite being an excellent programming language, JavaScript impacts web pages by slowing them down. While writing the initial code, most developers primarily focus on getting things done. Moreover, code minification lessens the time for a script to run - all things that drive down your Time to First Byte (TTFB). This also lowers the site’s bandwidth consumption. When connecting multiple JavaScript files into an individual minified file, code minification decreases the number of HTTP requests to the server. Of course, a human would struggle to read it, but a machine would speed through it without a problem. It’s like taking a 529-page book and condensing it into a 324-page book. Here, we have reduced 529 bytes to 324 bytes, gaining 205 bytes of free space and reducing the page load by almost 40%. That means it will load and render more quickly, reducing page load time and speeding up content. Now, let’s see how that same code looks once it’s been minified: function checkPalindrome(n)Ĭonst string=prompt("Enter a string: "), value=checkPalindrome(string) console.log(value) Īs you can see, the second block of code is much smaller and more compact. check if first and last string are sameĬonst string = prompt('Enter a string: ') ![]() This first block is regular, unminified JavaScript: // program to check if the string is palindrome or not Unminified vs Minified JavaScript Code Examples You may have to make some further changes to the code, too - for example, inlining functions, removing block delimiters, using implicit conditionals, or rewriting local variables. You’ve removed all the unnecessary white spaces, comments, newline characters, and everything that initially made the code legible. Once it’s been minified, it should be almost unreadable to the naked eye. To minify JavaScript code, you must parse it, compress it, and get the output. Some work goes into making code more compact while keeping it functional. However, the process isn’t instantaneous. ![]() However, the biggest concern is to minimize the code without altering the functionality.Ĭode minification is possible in all core programming technologies, including HTML, CSS, and - as we’re about to see - JavaScript. Code minification means optimizing code to save space, reduce page load times, and lower website bandwidth usage. Minification is also known as minimization. Kinsta customers can quickly minify JavaScript and CSS files through their MyKinsta dashboard. ![]() If you need to create a highly interactive website that runs in all browsers without any obstruction, then JavaScript is the most dependable option you can employ. Hence, alongside HTML and CSS, it’s a proficient choice to pick if you’re interested in web development. ![]() Notably, web browsers can understand JavaScript. For example, JavaScript offers complex elements such as scrolling video jukebox, 2D/3D videos, and interactive maps. Whereas HTML and CSS build a website’s structure, JavaScript adds complex features that bring interactivity to your website to engage the users. (Note that this functionality will probably increase the final size of your file)īefore trying to optimize your Javascript with this tool, do never forget to test your Javascript file and check if it is working properly.Īfter that, always keep in mind to save backups of your Javascript source file (cleaned) before launching any optimization.Īnd finally, test again your optimized script if there is no bugs.See how Kinsta stacks up against the competition. extended encryption : it consists in using the simple encryption previously explained and add a final layer of treatment, which will convert every character to Hexadecimal code in Javascript. simple encryption : it will encode every variables and functions of your Javascript code by incomprehensible words for humans, by using different techniques of rewriting (that all browser still easily understand).Ģ. Encrypt your Javascript code by choosing :ġ. Minify Compress Minimize : remove automatically all your comments of your code and delete every useless spaces (tabulations, returns, etc.) to minimize the size of your Javascript code. Why this tool can help you so much to optimise and protect your Javascript code of your website: Ignored in the JS code - separated by comma) (insert all variable and function names that must be
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