JSPM

Round a double-precision floating-point number to the nearest multiple of 10^n.

Converts a number into a string, keeping a specified number of decimals.

一个专注于易用性的、精度准确的基本运算库

Round a numeric value to the nearest multiple of 10^n toward positive infinity.

Round a double-precision floating-point number to the nearest multiple of 10^n toward negative infinity.

Round each component of a double-precision complex floating-point number to the nearest multiple of 10^n toward positive infinity.

Round a numeric value to the nearest multiple of b^n toward zero.

Round a numeric value to the nearest multiple of b^n on a linear scale.

Round a numeric value to the nearest multiple of 10^n toward zero.

Round each component of a double-precision complex floating-point number to the nearest multiple of 10^n.

Round each component of a double-precision complex floating-point number to the nearest multiple of 10^n toward negative infinity.

由于js中进行小数计算会有精度问题，此方法用于金额计算（保留小数点后两位小数，并进行四舍五入）

Leading zeroes to a number

Round a single-precision floating-point number to the nearest multiple of 10^n toward negative infinity.

toFixed rounding fix polyfill

Converts a number into a string and returns the number by keeping a specified number of decimal after rounding to the nearest.

Fix two decimal cases in currency value without worrying about wrong math rounds.