Generate a Random Number Between Two Numbers – JavaScript Solution

Generate Random Number between Two Numbers

This tutorial shows a snippet for generating random number between two given numbers.

Pseudo-code

max = 5
min = 1

randomNumber = Math.floor( Math.random() * (max - min + 1) + min )

print(randomNumber)  // could print numbers in range from 1 to 5

// Math.random generates random floating point number in range from 0 to 1
// Math.floor removes the floating point from the multiplication between (Math.random() * (max - min + 1) + min)

JavaScript Syntax

let max = 5;
let min = 1;

let randomNumber = Math.floor( Math.random() * (max - min + 1) + min );

console.log(randomNumber);

/*
 * Output 
 * COULD print: 1
 * ----------to------------
 * COULD print: 5
*/

the same code wrapped inside a function looks like

// Function that prints random number between min and max
function randomNumber(min, max) {
  return Math.floor(Math.random() * (max - min + 1) + min);
}

let random = randomNumber(5, 10);

console.log(random);

/*
 * Output 
 * COULD print: 5
 * ----------to------------
 * COULD print: 10
*/