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Jim Fenner 2017-04-06 22:43:42 -04:00 • committed by GitHub
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1-js/02-first-steps/01-hello-world/article.md
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# Hello, world! # Hello, world!
The tutorial that you're reading is about the core JavaScript, that is platform-independant. Further on you will be able learn Node.JS and other platforms that use it. The tutorial that you're reading is about core JavaScript, which is platform-independent. Further on, you will learn Node.JS and other platforms that use it.
But we need a working environment to run our scripts, and, just because this book is online, the browser a good choice. We'll keep the amount of browser-specific commands (like `alert`) to minimum, so that you don't spend time on them if you plan to concentrate on another environment like Node.JS. From the other hand, browser details are explained in detail in the [next part](/ui) of the tutorial. But, we need a working environment to run our scripts, and, just because this book is online, the browser a good choice. We'll keep the amount of browser-specific commands (like `alert`) to a minimum, so that you don't spend time on them if you plan to concentrate on another environment like Node.JS. On the other hand, browser details are explained in detail in the [next part](/ui) of the tutorial.
So first let's see how to attach a script to the webpage. For server-side environments you can just execute it with a command like `"node my.js"` for Node.JS. So first, let's see how to attach a script to the webpage. For server-side environments, you can just execute it with a command like `"node my.js"` for Node.JS.
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- A script in an external file can be inserted with `<script src="path/to/script.js"></script>`. - A script in an external file can be inserted with `<script src="path/to/script.js"></script>`.
There is much more about browser scripts and their interaction with the web-page. But let's keep in mind that this part of the tutorial is devoted to JavaScript language. So we shouldn't distract ourselves from it. We'll be using a browser as a way to run JavaScript, very convenient for online reading, but yet one of many. There is much more about browser scripts and their interaction with the web-page. But let's keep in mind that this part of the tutorial is devoted to JavaScript language, so we shouldn't distract ourselves from it. We'll be using a browser as a way to run JavaScript, which is very convenient for online reading, but yet one of many.