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This article mainly shows you "how to use the math attribute of js", the content is simple and clear, hoping to help you solve your doubts, let the editor lead you to study and learn "how to use the math attribute of js" this article.

/ / arithmetic object Math

/ / rounding up

Console.info (Math.ceil 26.1)

/ / rounding down

Console.info (Math.floor 26.1)

/ / rounding

Console.info (Math.round 26.1)

/ / absolute value

Console.info (Math.abs (- 26.1))

/ / get the random number 0-1 (not included)

Console.info (Math.random ())

/ / derivation: get a random integer between 0 and 9 multiplied by 10 and rounded down

Var randomnum = Math.floor (Math.random () * 10)

Console.info ("random integers (0-9)" + randomnum)

/ / derivation: get a four-digit random integer with a range of 1000-9999

/ / suppose you get the minimum random number 0 maximum number-minimum number + 1

Var num = Math.floor (Math.random () * (9999-1000001))

Console.info ("random four-digit integers (1000-9999)" + num)

/ / Math.random () * ((9999-1000001) + 1000)

/ / Math.floor (Math.random () * (9999-1000001))

The colors selected this time are:

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