参数：
- {number} number：要格式化的数字
- {number} decimals：保留几位小数
- {string} dec_point：小数点符号
- {string} thousands_sep：千分位符号
export const moneyFormat = (number, decimals, dec_point, thousands_sep) => {
number = (number + '').replace(/[^0-9+-Ee.]/g, '')
const n = !isFinite(+number) ? 0 : +number
const prec = !isFinite(+decimals) ? 2 : Math.abs(decimals)
const sep = typeof thousands_sep === 'undefined' ? ',' : thousands_sep
const dec = typeof dec_point === 'undefined' ? '.' : dec_point
let s = ''
const toFixedFix = function(n, prec) {
const k = Math.pow(10, prec)
return '' + Math.ceil(n * k) / k
}
s = (prec ? toFixedFix(n, prec) : '' + Math.round(n)).split('.')
const re = /(-?\d+)(\d{3})/
while (re.test(s[0])) {
s[0] = s[0].replace(re, '$1' + sep + '$2')
}
if ((s[1] || '').length < prec) {
s[1] = s[1] || ''
s[1] += new Array(prec - s[1].length + 1).join('0')
}
return s.join(dec)
}
示例：
moneyFormat(10000000) // 10,000,000.00 moneyFormat(10000000, 3, '.', '-') // 10-000-000.000
标签：格式化,sep,point,金额,number,prec,const,dec From： https://www.cnblogs.com/Jishuyang/p/17073200.html