What are the methods of javascript division and rounding?

Javascript division and rounding methods include: 1. Rounding is achieved through the round method; 2. Rounding up is achieved through the ceil method; 3. Rounding down is achieved through the floor method; 4. Forced through parseInt Rounding.

The operating environment of this article: windows7 system, javascript version 1.8.5, Dell G3 computer.

What are the methods of javascript division and rounding?

Four methods of javascript division results rounding

Math.round(7/2)＝4  
//四舍五入，round() 方法可把一个数字舍入为最接近的整数。

Math.ceil(7/2)＝4  
//强制向上取整，ceil() 方法将数字向上舍入为最接近的整数，并返回结果。如果传递的参数是整数，则不会舍入该值。

Math.floor(7/2)＝3  
//强制向下取整，floor() 方法返回小于等于x的最大整数。如果传递的参数是一个整数，该值不变

parseInt(7/2)=3  
//强行转化，得出最小整数，同Math.floor方法。parseInt() 函数可解析一个字符串，并返回一个整数。

Recommended study: " JavaScript basic tutorial》

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