Math.random() javascript

JavaScript
/* 
   The Math.random() function returns a floating-point, pseudo-random
   number in the range 0 to less than 1 (inclusive of 0, but not 1)
   with approximately uniform distribution over that range — which you
   can then scale to your desired range. The implementation selects the
   initial seed to the random number generation algorithm; it cannot
   be chosen or reset by the user.
*/
function getRandomInt(max) {
   return Math.floor(Math.random() * Math.floor(max));
}

console.log(getRandomInt(3));
// expected output: 0, 1 or 2

console.log(getRandomInt(1));
// expected output: 0

console.log(Math.random());
// expected output: a number from 0 to <1Math.random() 
// will return a number between 0 and 1, you can then time it up to get larger numbers.
//When using bigger numbers remember to use Math.floor if you want it to be a integer
Math.floor(Math.random() * 10) // Will return a integer between 0 and 9
Math.floor(Math.random() * 11) // Will return a integer between 0 and 10

// You can make functions aswell 
function randomNum(min, max) {
	return Math.floor(Math.random() * (max - min)) + min; // You can remove the Math.floor if you don't want it to be an integer
}var random;
var max = 8
function findRandom() {
  random = Math.floor(Math.random() * max) //Finds number between 0 - max
  console.log(random)
}
findRandom()function randomNumber(min, max) {
  return Math.floor(Math.random() * (max - min)) + min + 1;
}//Returns a number between 1 and 0
  console.log(Math.random());
  
//if you want a random number between two particular numbers, 
//you can use this function
  function getRandomBetween(min, max) {
    return Math.random() * (max - min) + min;
  }
//Returns a random number between 20 and 170
  console.log(getRandomBetween(20,170));
  
//if you want a random integer number from one number to another 
//(including the min and the max numbers), you can use this function
  function getRandomIntBetween(min, max) {
    min = Math.ceil(min);
    max = Math.floor(max);
    return Math.floor(Math.random() * (max - min + 1)) + min;
  }
  
//Returns a random integer number from 0 to 25
  console.log(getRandomIntInclusive(0,25));Math.floor(Math.random() * 10);
Source

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