JavaScript Hello World function code example

Example 1: Javascript how to run hello world

var msg = "hello world";
console.log(msg);

Example 2: hello world javascript

// Output Hello World! in the console.
console.log("Hello World!");

Example 3: hello world in javascript

// 1. Using console.log()
console.log("Hello World");
// console.log() is used in debugging the code.

// 2. Using alert()
alert("Hello, World!");
// // The alert() method displays an alert box over the current window with the specified message.

// 3. Using document.write()
document.write("Hello, World!");
// // document.write() is used when you want to print the content to the HTML document.

Example 4: hello in js

console.log("Hello world");