Javascript :: Math round, ceiling (ceil), floor, max, min, random, etc...

It's common to try to remember what's the right call for Math functions, hence adding this to my local KB here.

Always the same principle, Math.function(<params>).

Round:
var a = 123.45;
var b = 345.67;
console.log(Math.round(a));
console.log(Math.round(b));
//outputs: 123
//outputs: 346

Ceiling (ceil):
var a = 123.45;
var b = 345.67;
console.log(Math.ceil(a));
console.log(Math.ceil(b));
//outputs: 124
//outputs: 346

Floor:
var a = 123.45;
var b = 345.67;
console.log(Math.floor(a));
console.log(Math.floor(b));
//outputs: 123
//outputs: 345

Max:
var a = 123.45;
var b = 345.67;
console.log(Math.max(a, b));
//outputs: 345.67

Min:
var a = 123.45;
var b = 345.67;
console.log(Math.min(a, b));
//outputs: 123.45

Random:
function getRandomInteger(limitIntValue) {
  return Math.round(Math.random() * limitIntValue);
}
function getRandomNumber(limitNumberValue) {
  return (Math.random() * limitNumberValue);
}
console.log(getRandomInteger(10));
console.log(getRandomInteger(-10));
console.log(getRandomNumber(123.45));
//outputs: <random integer value between 0 and 10>
//outputs: <random integer value between -10 and 0>
//outputs: <random number value between 0 and 123.45>