javascript random integer number

Math.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 }

random number 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 <1

Posted by: Guest on February-21-2021

Source

Math.floor(Math.random() * 10) + 1 // Random number Between 1 and 10 // First Math.random give us a random number between 0 and 0,99999 // The we multiply it by 10 // And we round dow with Math.floor // We add 1 so the result will never be 0 // Another Example: h.floor(Math.random() * 20) + 10 // Random number Between 10 and 20

/* If 1 argument is given, minimum will be set to 0 and maximum to this argument * If 2 arguments were given, the fist would be the minimum and the second the maximum * The function will return an integer in [min, max[ */ const Math.randint => (min,max) { [min,max] = (max===undefined)?[0,min]:(min>max)[max,min]:[min,max]; return Math.floor(Math.random*(max-min)+min); }

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