How to write Hello World program in JavaScript?

How to write "Hello, World!" program in JavaScript? JavaScript can be implemented using JavaScript statements that are placed within the <script>... </script>. You can place the <script> tags, containing your JavaScript, anywhere within your web page, but it is normally recommended that you should keep it within the <head> tags.

How do you say hello world in Node JS?

greet = "‮".toString.bind ("hello world!") If you paste this inside the Developer Console and execute it will print a "Hello, World!" message: >> console.log (greet ()) hello, world! Another interesting thing I found is that if you paste the same greet code inside Node.js REPL it will automatically transpile it to a "readable" format.

How is the JavaScript code interpreted in the HTML?

The JavaScript code in the <script> element is interpreted from top to bottom. For example: <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title> JavaScript Hello World Example </title> <script> alert ('Hello, World!'); </script> </head> <body> </body> </html>

Can I place JavaScript code inside the element directly?

Placing JavaScript code inside the <script> element directly is not recommended and should be used only for proof of concept or testing purposes. The JavaScript code in the <script> element is interpreted from top to bottom. For example:

Why is this "Hello, World!" JavaScript code fragment recognized as an acceptable program instruction? [duplicate]

Tags:

javascript

node.js

The actual code is:

greet = "...".toString.bind("hello world!")

Where the ... in the string literal are the bytes E2 80 AE, which is the right-to-left override Unicode character, which causes everything after it to be displayed in reverse. It's used for writing right-to-left languages like Arabic or Hebrew.

hex editors are your friend

You have hidden characters which reverse the text. Here you can see the raw characters: https://www.soscisurvey.de/tools/view-chars.php

enter image description here

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Why is this "Hello, World!" JavaScript code fragment recognized as an acceptable program instruction? [duplicate]

Tags:

javascript

node.js

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