Yet another example is the case of Typescript which adds optional typing (on that matter make sure to also check Sorbet - Making Ruby Statically Typed) to Javascript, acting as a statically typed and better superset of it. It will allow you to write custom tools, min languages/DSLs, make your own fully fledged language, or as in "Create Your Own Compiler", transform one language to another!Ī prime example of why the latter, in other words transpilation, has proved indispensable is the case of Babel. Since not all browsers are able to cope with all the latest Javascript language features, Babel translates that newest Javascript code into backwards compatible version of JavaScript in current and older browsers or environments. However peeking into that black box and learning to write a compiler gives you super powers. Thinking too much about them, ignoring what happens under the covers. Along with it, we take a look at what a compiler actually is and the state of the art that is Roslyn.Ĭompilers are important, but most people go day by day using their favorite programming language and tools without In the snippet below, I used CDN to load the Bootstrap Framework for the design of the page."Create Your Own Compiler" is an interactive tutorial that step by step shows how to write your own simple compiler that transforms JavaScript into Lisp. It contains the HTML Tags/Elements of the page interface, code editors, and preview panel. The file contains the following script like the snippet below. Step 1: Creating the Interfaceįirst, let's create a new HTML file named index.html. The listed JS objects and methods will be used for getting, compiling, and executing the scripts and displaying the result on the Iframe window/panel. The Iframe HTML element will serve as the window or panel of the result preview. The Textarea will be the text fields of the scripts or serves as the code editor where developer write or place their scripts. In order to meet the program we would like to create, we will be needing the following HTML elements and JavaScript methods How to Create an HTML, CSS, and JS Code Editor with Live Preview using JavaScript
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