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// 保留两位小数 var money = `${Number(132132.999).toFixed(2)}`; console.log(money);// 132133.00 // 每隔3位用逗号隔开 money = money.replace(/^(\d*).(\d*)/, (...args) => { return args[1].replace(/\B(?=(?:\d{3})+$)/g, ',') + '.' + args[2]; }); console.log(money); //