Different ways to run JavaScript

 

Different ways to run JavaScript

• Using the browser console tab
• Using Node.js
• By creating Web Pages

Using the browser console tab

Almost every popular web browsers have built-in JavaScript engines. Where you can run JavaScript on a browser. To run JavaScript on browsers follow these steps

• Open your web browser (I'm using Google Chrome).

• Right-click on the display and select Inspect. (F12 shortcut).

• Now on the developer tools select the Console tab and then start writing your javascript code.

Using Node.js

Node is a back-end run-time environment for executing JavaScript code. To run JS using Node.js, follow these steps:

• Install the latest version of Node.js.
• Install an IDE/Text Editor like Visual Studio Code. In VS code, create a file > write JS code > save it with the .js extension

• Open up the terminal/command prompt > navigate to the file location > type node hello.js > hit enter.

By Creating Web Pages

• Open VS Code > Go to File > New File > Save it with .html extension. For example, main.html.
• Copy this doctype (minimum valid HTML code) and save it in the file.

• Similarly create a JS file, write the following JS code and save it with .js extension like main.js.

console.log('hello world');

• From inside the HTML file, we need to link the main.js file to use it. You can achieve that by adding the following code in main.html.

<script scr="main.js"></script>

• Open the main.html file using a browser.
• To check if our JS code ran or not, Right click on the web page > Inspect > Choose console tab