What's Math Constants and Functions using JavaScript?

The Math object contains useful constants such as Math.PI, Math.E

Math also has a zillion helpful functions.

Math.abs(value); //absolute value

Math.max(value1, value2); //find the largest

Math.random() //generate a decimal number between 0 and 1

Math.floor(Math.random()*101) //generate a decimal number between 0 and 100