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This article will explain in detail about the role of the Math function in web, the editor thinks it is very practical, so share it for you to do a reference, I hope you can get something after reading this article.

Math.round / / rounded

Random () / / returns a random number between 0 and 1

Max (num1, num2) / / returns a large number

Min (num1, num2) / / returns a small number

Abs (num) / / absolute value

Ceil / / 12 rounding up

Floor (11.8) / / 11 round down

1. Gets a four-digit CAPTCHA.

2. Verification

Train of thought:

Layout (brief)

1. Get the elements that need to be operated

two。 Increase events

3. Get the string that needs to be verified

4. The string is processed (1. The user name cannot be empty. two。 The first letter cannot be a number. 3. The length of the user name should be less than 6 digits but not more than 20 digits. 4. The password cannot be empty.)

5. Validate the string and write the result to the prompt area

Note: spaces are also characters

3. Calculator, calculator idea.

Overall Arrangement. (slightly)

The switch () statement is similar to if, but more complex than if

Switch (sth) {

Case sth2:

Code block

Break

Default:

Code block

}

A small calculator:

This is the end of this article on "what is the function of Math function in web". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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