Modules can then be exported and imported as required into other files. Let's create that in our global _data file. javascript tutorial ES6 provides the ability to split JavaScript into multiple files (modules). You might be wondering where did the utils.replaceExtension function come from? It's a new function. With the above changes, we've fixed all the 3 issues we mentioned above. Here is the code to handle HTML, CSS and JS minification together: // tasks/Ĭonst Next, we will create a new file under the tasks folder. Let's install some packages to help us with our HTML, JS and CSS minification workflow! npm install gulp-htmlmin terser -D In the previous post, we used Gulp to set up image transformation, so we will stick to that. That being said, we can still write CSS in the template file directly if we want. □ I will split the code into individual files when it goes more than 10 lines usually (or 5 sometimes), but this is purely personal preference. The syntax highlighting support in individual files is better than inlining them in Nunjucks or Markdown templates.Īlso, I am obsessed with file structures. Why do you want to separate the JS and CSS source code? Unlike enterprise applications, there will be very minimal CSS and JS in this project. Will there be a lot of JavaScript and CSS in each page? When building my personal site, I asked myself: The expected output in the dist folder should be the minified version of the index.html, shown below: Here is a sample of the index.* source code:- Ĭonst p = document. Here is a sample of the base.layout.* source code:- Ĭonst h1 = document. Notice that we have new CSS and JavaScript files created with same name as the template file: # file structure Sure! Here is the expected file structure. (For CSS, some say that's called internal CSS, but I will refer that as inline in this post, for simplicity's purpose) Could you show me an example? If you skipped the Introduction, we strongly recommend reading it before moving on to the rest of the documentation.Inline means writing CSS and JavaScript in the same HTML file using the and tag. If not using HMR, of course, But it's not appropriate for production mode. Now you can do it in native way, so just import ES-modules from and be happy. If you are using VSCode, you can install the es6-string-html extension and prefix the strings with a /*html*/ comment to get syntax highlighting for them. One of main goals when exposing your web-app to production, is minify traffic volume for your server, using CDN. You may have noticed that the imported component's template is inlined as a JavaScript string. You can also use any other HTTP server that can serve static files with the correct MIME types. To start a local HTTP server, first make sure you have Node.js installed, then run npx serve from the command line in the same directory where your HTML file is. In order for ES modules to work on our local machine, we need to serve the index.html over the protocol, with a local HTTP server. If you directly open the above index.html in your browser, you will find that it throws an error because ES modules cannot work over the file:// protocol, which is the protocol the browser uses when you open a local file.ĭue to security reasons, ES modules can only work over the protocol, which is what the browsers use when opening pages on the web.
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