What is the use of the Math.random Function in JavaScript ?
The Math.random()
function in JavaScript is used to generate a pseudo-random floating-point number between 0 (inclusive) and 1 (exclusive).
Example 1: Here, Math.random()
is used to generate a random number.
Javascript
let randomNumber = Math.random(); // Outputs a random number between 0 and 1 (excluding 1) console.log(randomNumber); |
Output
0.7620477508766035
Example 2: Here, Math.random()
generates a number between 0 and 1, * 10
scales it to a range between 0 and 10, Math.floor()
rounds it down to the nearest integer, and + 1
shifts the range to be between 1 and 10.
Javascript
let randomInteger = Math.floor(Math.random() * 10) + 1; // Outputs a random integer between 1 and 10 console.log(randomInteger); |
Output
10
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