Introduction to five methods of JavaScript rounding

This article brings you an introduction to the five methods of rounding in JavaScript. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

1. Math.floor() rounds down

Math.floor(3.141592654) 
// 3

2. Math.ceil() rounds up

Math.floor(3.141592654) 
// 4

3. Math.round() rounds

Math.round(3.141592654) 
// 3

4. parseInt() removes the decimal point and the part after the decimal point

parseInt(3.141592654) 
// 3

5. Convert the data into Number type

~~3.141592654 
// 3

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