![]() ![]() You have always been able to incorporate these bundling and minification solutions. Tools like JSMin and YUI have been around for several years. With minification, the size of such resources is much smaller, often by as much as 70% or more! With bundling, there are fewer resources that need to be rendered to the browser. ![]() Second, the JavaScript and CSS code is minified by means of removing all of the carriage returns and line feeds as well as verbose variable names in favor of shorter (less verbose) alternatives. First, all of the disparate JavaScript and CSS files are combined into one or more files. Bundling and minification handle two important tasks. One of the most important considerations in any Web application is the size of the content rendered to the browser. In this installment, I’m going to focus on one of MVC’s most useful features: integrated JavaScript and CSS bundling and minification. For brevity’s sake, when I refer to MVC the design pattern, I’m referring to the ASP.NET implementation of the pattern. Since that article, ASP.NET MVC 4 has been released to beta. ![]() This file contains the list of bundles and some optional properties.In the first installment of this series, I explored a few of the new features in ASP.NET MVC 4, including the new default project templates, mobile templates, and display modes. After you create a bundle, a file named bundleconfig.json is added to the project. This menu is available for CSS and JS files. #VISUAL STUDIO MINIFY JAVASCRIPT INSTALL#Once you install the extension, a new menu item is available in the solution explorer: This extension relies on NUglify, a fork of the Microsoft Ajax Minifier, to minify CSS and JS. To remove the Node.js dependency, Mads Kristensen has written an extension for Visual Studio for minifying files: BundlerMinifier. Finally, every developer must install Node.js on their computer to build the project. For instance, creating a new project is longer because of installing the Node.js dependencies (about 1500 files in node_modules). However, using Node.js and gulp has also negative effects. This tool is widely used by front-end developers to automate build tasks. In the preview version of ASP.NET Core, the web site template uses Gulp to generate the min files. Now we understand why we should bundle and minify stylesheets and JavaScript files, let's see how we can do that with Visual Studio and ASP.NET Core. If you are not familiar with HTTP/2, you should read this blog post from 2 members of the IIS team. With HTTP/2, this is less important, mainly if you can take advantage of Server push (not currently supported in. This reduces the number of requests needed to display a web page, and so the loading time. Minifying consists of reducing the size of the JavaScript and Stylesheet files by removing comments, spaces, merging CSS rules, shortening variable/function names, replacing true by !0, and lots of advanced techniques.īundling consists of combining multiple files. Today, I'll stay on improving performance with bundling and minifying stylesheets and JavaScript files. The second is about reducing the size of the server response with gzip compression. The first one was about caching files to ensure the browser download them only once. In the last two posts, I wrote about improving ASP.NET Core web site performance. ![]()
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