Generate an n-digit random number using JavaScript
Today we’ll show you how to generate an n-digit random number using JavaScript. We have multiple ways to get n-digit random numbers but we’ll cover a few of them for demo purposes.
We have already written an article to Convert a String to a Number in JavaScript.
Let’s check out the below examples.
Way to generate an n-digit random number
1. Generate 6 digit random number
Use the following code to generate a 6 digit random number.
1 2 3 4 | function getSixDigitRandom() { return Math.random().toString().substring(2, 8); } getSixDigitRandom(); // Output: 407578 |
Here we have used the Math.random() method to generate the random number and then after substring it for six digit output.
2. Generate n-digit random number
To generate n-digit random numbers, check out the code below.
1 2 3 4 | function getRandomNumber(digit) { return Math.random().toFixed(digit).split('.')[1]; } getRandomNumber(16); // Output: 7170981998871888 |
In the above code, we have used the same Math.random() method to generate the random number then used the toFixed() method for number generation and split it for actual output.
That’s it for today.
Thank you for reading. Happy Coding..!!
