货币filter

Posted 2020-10-15 阿席巴i

• 输入金额, 货币符号, 已经精度(小数点后保留的位数)

  currency(12345, "￥", 2) ==> "￥12,345.00"

  export function currency (value, currency, decimals) {
    const digitsRE = /(\d{3})(?=\d)/g
    value = parseFloat(value)
    if (!isFinite(value) || (!value && value !== 0)) return ‘‘
    currency = currency != null ? currency : ‘$‘
    decimals = decimals != null ? decimals : 2
    var stringified = Math.abs(value).toFixed(decimals)
    var _int = decimals
  ? stringified.slice(0, -1 - decimals)
  : stringified
    var i = _int.length % 3
    var head = i > 0
  ? (_int.slice(0, i) + (_int.length > 3 ? ‘,‘ : ‘‘))
  : ‘‘
    var _float = decimals
  ? stringified.slice(-1 - decimals)
  : ‘‘
    var sign = value < 0 ? ‘-‘ : ‘‘
    return sign + currency + head +
  _int.slice(i).replace(digitsRE, ‘$1,‘) +
  _float
  }