Javascript has inbuilt functions for converting decimal number to an integer value.

Math.round function is used to round a number to its nearest integer. If fractional part of the number >=0.5 then the argument is rounded to next higest integer.

If fractional part of the number < 0.5 then the argument is rounded to lowest integer.

Syntax: Math.round(number)

eg. Math.round(7.5) = 8

Math.round(7.2) = 7

Math.ceil function returns integer greater than or equal to a given number. Ceil means think of the ceiling of the room which is above your head.

Syntax: Math.ceil(number)

eg. Math.ceil(7.5) = 8

Math.ceil(7.2) = 8

Math.ceil(7) = 7

Math.ceil(-7.5) = -7

Math.ceil(-7.2) = -7

Math.floor function returns integer lesser than or equal to a given number. Floor means think of the floor of the room which is below you

Syntax: Math.floor(number)

eg. Math.floor(7.5) = 7

Math.floor(7.2) = 7

Math.floor(7) = 7

Math.floor(-7.5) = -8

Math.floor(-7.2) = -8

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