1.安装big.js
npm install --save big.js
2.页面上引用big.js
const Big = require('big.js')
3.常用操作
加法plus
0.1 + 0.2 // 0.30000000000000004
x = Big(0.1)
y = x.plus(0.2) // '0.3'
Big(0.7).plus(x).plus(y) // '1.1'
减法minus
0.3 - 0.1 // 0.19999999999999998
x = Big(0.3)
x.minus(0.1) // "0.2"
x // “0.3"
乘法times
0.6 * 3 // 1.7999999999999998
x = Big(0.6)
y = x.times(3) // '1.8'
除法div
x = Big(2);
y = Big(3);
z = x.div(y) // "0.6666666667"
绝对值abs
x = Big(-0.8)
x.abs() // ‘0.8'
模运算mod
1 % 0.9 // 0.09999999999999998
x = Big(1)
x.mod(0.9) // '0.1'
保留两位小数toFixed
Big(12).toFixed(2) // 12.00
