Where do you run javascript

How do you execute JavaScript?

If you save your JavaScript in it’s own file, you can run the entire file at once with nodejs by typing node where filename is the file you want to run. If you have node installed and you are using a text editor to write JavaScript in separate files you can use your editor to run your code.

Where does a JavaScript program execute?

JavaScript is most often run on webpages inside the browser, but it can also be run server-side. We will go through some of these platforms later. For now, we will run JavaScript in the console, which will allow us to see the results of our code more quickly.

Is JavaScript enabled in Chrome?

Chrome™ Browser – Android™ – Turn JavaScript On / Off

Tap Settings. From the Advanced section, tap Site settings. Tap JavaScript.

Is JavaScript free to install?

For those want to learn to program, one of the biggest advantages of JavaScript is that it is all free. You don’t need to pay for anything to get started.

Which software is best for JavaScript?

7 Best JavaScript Editor Choices

1. Atom. Before diving straight into the features of Atom, let’s first understand what Electron is. …
2. Visual Studio Code. …
3. Eclipse. …
4. Sublime Text. …
5. Brackets. …
6. NetBeans. …
7. Vim.

Do I need to install JavaScript?

2 Answers. JavaScript, in most cases, is a client-side scripting language. That means the code runs in the browser so there’s nothing you need to do on the server to enable that. The exception would be installing some sort of web server written in Node.

How do I run JavaScript in VS code?

1. Install the Code Runner Extension.
2. Open the JavaScript code file in Text Editor, then use shortcut Control + Alt + N (or ⌃ Control + ⌥ Option + N on macOS), or press F1 and then select/type Run Code , the code will run and the output will be shown in the Output Window.

Where do I write JavaScript code?

JavaScript provides 3 places to put the JavaScript code: within body tag, within head tag and external JavaScript file. Let’s create the first JavaScript example. The script tag specifies that we are using JavaScript. The text/javascript is the content type that provides information to the browser about the data.

How is JavaScript executed in browser?

To execute JavaScript in a browser you have two options — either put it inside a script element anywhere inside an HTML document, or put it inside an external JavaScript file (with a . js extension) and then reference that file inside the HTML document using an empty script element with a src attribute.

Is JavaScript safe?

JavaScript is “relatively safe,” but not “absolutely safe.” Any code you run on your system has a potential to do harm. There is no perfectly safe system, except for the one that never used.

From the author

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🚀 How to Run JavaScript Code

In order to follow along with this course, you need to know how and where you run your JavaScript code. You have several options to run your first hello world programming:

Open your editor and create a file named index.js .

How to Run JavaScript from the Command Line

Running a JS program from the command line is handled by NodeJS. Start by installing NodeJS on local machine if necessary.

Now simply open the command line in the same directory as the index.js script you created (VS Code will do this automatically with the integrated terminal).

How to Run JavaScript from the Browser

When people think of “JavaScript”, they most often think of a web browser. You can run code in the browser by creating an HTML file that references the script. In our case, we used the defer option, which will execute the JS after the HTML file is finished loading.

Run a script from an HTML file

html>  head>  script defer src="./index.js">script>  head> html> 

Now simply open this HTML file on your local machine and open the developer console (next step) to see the output.

Inspect the Browser Console

In Chrome, you can open the developer console with Ctrl+Shift+J (Windows) or Ctrl+Option+J (Mac), or manually from the settings menu by selecting More Tools -> Developer Tools. The console allows you to run code in the browser, similar to how

Run JavaScript with a Framework

It is worth mentioning that frameworks like React, Angular, Svelte, etc will take care of the building & running of your app automatically and provide framework-specific tooling and steps for running code. In the real world, you are more likely to use the tooling provided by the framework to run your code, as opposed to the basic methods shown in this couse.

Run JavaScript in a Sandbox

This course uses StackBlitz to run JS code examples in an isolated sandbox in the browser. This is a great option for sharing quick demos and issue reproductions 💡.

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Where can I run JavaScript?

Now that you know what JavaScript is and how awesome it can be, the question comes, where do I run it or work with it? There are 4 key places where I run JavaScript daily:

1. The browser console:
   A browser’s console is the easiest method for anyone trying to run JavaScript. Almost all browsers have developer tools that include a console to run scripts. Since most of us have access to a browser, this is the most convenient way of testing the waters. If you would like to know how to get to the console in the browser of your choice, check this handy guide out
2. Using your terminal:
   Yes! The terminal. Install node, and it provides you with a REPL interface Instruction on how to install NodeJS can be found here
3. In an online sandbox:
   There are a ton of online websites that provide you with a playground or sandbox to run your JavaScript code. Try them out! Here are some of my favorites: PlayCode, JSFiddle, Code Sandbox and StackBlitz
4. Code editor:
   If you do not have a code editor installed, you should. There are paid offerings like IntelliJ and WebStorm from JetBrains, but there are free options that will do just fine. VSCode and Sublime Text are the top two free code editors that I recommend. If you decided to install VSCode, there is an excellent plugin for it that lets you run JavaScript as you write the code (live feedback). Check out Quokka and get the plugin here

That’s all for today, folks. If you have any questions, please feel free to reach out to me at contact@bhagat.me

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