1. 保留小數點,不足補零
const decimal = (val, num) => {
if (!num) return
let str = val + ''
return parseFloat(str).toFixed(num)
}
2. 千分位格式化
const thousand = val => {
if (!val) return
let str = val+ ''
return str.replace(/\d{1,3}(?=(\d{3})+(\.\d*)?$)/g, '$&,')
}