What is Math?
The Math object includes several mathematical constants and methods.
Math object allows you to perform mathematical tasks.
Math is not a constructor, hence all properties and methods can be called by using Math as an object without creating it.
var a = Math.PI; //3.141592653589793 var b = Math.sqrt(25); //5
The floor() method rounds a number to the nearest integer downwards side, and returns the result.
Input can be positive number or negative number;
var a = Math.floor(0.50); //a = 0 var b = Math.floor(0.90); //b = 0 var c = Math.floor(8); //c = 8 var d = Math.floor(9.1); //d = 9 var e = Math.floor(-3.1); //e = -4 var f = Math.floor(-8.9); //f = -9 var g = Math.floor(0); //g = 0
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