js浮点数运算保留两位小数点

js浮点数运算保留两位小数点

window.onload = function() {        a = 16601.56;        b = 11482.00;        function sum(a, b) {            //.toFixed(4) 两位小数点            return parseFloat(a - b).toFixed(2);        }        function sum1(a, b) {            return parseFloat(a + b).toFixed(2);        }        console.log(sum(a,b)) // 1,234,567,890        console.log(sum1(a,b)) // 1,234,567,890    }