What are the methods for rounding decimals in js? (Picture and text tutorial)

The following are the methods I have compiled for you to round decimals in js? , interested students can check it out.

1. Discard the decimal part and keep the integer part

js:parseInt(7/2)

2. Round up, if there is a decimal, add 1 to the integer part

js: Math.ceil(7/2)

3, Rounding.

js: Math.round(7/2)

4, round down

js: Math.floor(7/2)

5. Generate random numbers

js:Math.random()*10  0-9的随机数

The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

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