JS Math cheatsheet

Hi everyone!
Continuing to write about JavaScript, today

Here is a list of most usefull Math object methods. Math is an object with methods and props for mathematical calculations. Also, Math is not a constructor and every method is static.

• abs
• round
• ceil
• floor
• max
• min
• pow
• random
• sqrt

More methods and information you can check on MDN

abs

Math.abs(x) — Returns the absolute (positive) value of x

Math.abs(25); // 25 Math.abs(-2); // 2 Math.abs(null); // 0 Math.abs(''); // 0 Math.abs([]); // 0 Math.abs([2]); // 2 Math.abs([1,2]); // NaN Math.abs({}); // NaN Math.abs('-1'); // 1 Math.abs('string'); // NaN Math.abs(); // NaN 

round

Math.round(x) — The value of x rounded to its nearest integer

Math.round(20.49); // 20 Math.round(20.5); // 21 Math.round(-20.5); // -20 Math.round(-20.51); // -21 

ceil

Math.ceil(x) — Value of x rounded up to its nearest integer

Math.ceil(.95); // 1 Math.ceil(4); // 4 Math.ceil(7.004); // 8 Math.ceil(-0.95); // -0 Math.ceil(-4); // -4 Math.ceil(-7.004); // -7 

floor

floor(x) — The value of x rounded down to its nearest integer

Math.floor( 45.95); // 45 Math.floor(-45.95); // -46 

max

max(x,y,z,...,n) — Returns the number with the highest value

Math.max(10, 20); // 20 Math.max(-10, -20); // -10 Math.max(-10, 20); // 20 

min

min(x,y,z,...,n) — Same for the number with the lowest value

Math.min(10, 20); // 10 Math.min(-10, -20); // -20 Math.min(-10, 20); // -10 

pow

pow(base, exponent) — base to the power of exponent

Math.pow(7, 2); // 49 Math.pow(8, 2); // 64 Math.pow(2, 8); // 256 

random

random() — Returns a random number between 0 and 1 (include 0 and exclude 1)

sqrt

sqrt(x) — Square root of x

Math.sqrt(9); // 3 Math.sqrt(2); // 1.414213562373095 Math.sqrt(1); // 1 Math.sqrt(0); // 0 Math.sqrt(-1); // NaN Math.sqrt(-0); // -0 

More knowledge and experience you will find there: