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  • 金额的计算

    const digitsRE = /(d{3})(?=d)/g

    export function currency (value, currency, decimals) {
    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
    }
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  • 原文地址:https://www.cnblogs.com/web-chuanfa/p/11080490.html
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