Built-in objects in JavaScript -8-math-3

Learning Goals

1. How to master the Math object:

Min()

Max()

Ceil()

Floor()

Round()

ABS()

Math.min ()

Grammar:

Math.min (num1,num2,... numn)

Function:

Find the minimum value in a set of numbers.

return Value: Number.

Math.max ()

Grammar:

Math.max (num1,num2,... numn)

Function:

Find the maximum value in a set of numbers.

return Value: Number.

Math.ceil ()

Grammar:

Math.ceil (num)

Function:

Rounding up, which returns the smallest integer greater than Num.

return Value: Number.

Math.floor ()

Grammar:

Math.floor (num)

Function:

takes an integer down and returns the integer portion of Num.

return Value: Number.

Math.Round ()

Grammar:

Math.Round (num)

Function:

Rounds an integer to the nearest integer.

return Value: Number.

Math.Abs ()

Grammar:

Math.Abs (num)

Function:

returns num is the absolute value.

return Value: Number

Learning Goals

1. grasp the random () method of the Math object

2. encapsulates a function that evaluates to a random integer between N and M.

Learning Goals

1. grasp the random () method of the Math object

2. encapsulates a function that evaluates to a random integer between N and M.

Math.random ()

Grammar:

Math.random ()

features :

Returns a random number greater than or equal to 0 less than 1 .

return Value: Number.

Description

The formula for finding a random integer between N and m :

Random=math.floor (Math.random () * (m-n+1) +n);

Built-in objects in JavaScript -8-math-3