A "Hello, World!" is a simple program that prints Hello, World! on the screen. Since it's a very simple program, this program is often used to introduce a new programming language to beginners.
We will use these three ways to print 'Hello, World!'.
console.log()alert()document.write()
1. Using console.log()
console.log() is used in debugging the code.
Source Code
Output
Hello, World!
Here, the first line is a comment.
// the hello world program
The second line
console.log('Hello, World!');
prints the 'Hello, World!' string to the console.
2. Using alert()
The alert() method displays an alert box over the current window with the specified message.
Source Code
3. Using document.write()
document.write() is used when you want to print the content to the HTML document.
Source Code