js 金额处理加小数点后两位

function toDecimal2(x) {var f = parseFloat(x);if (isNaN(f)) {return false;}var f = Math.round(x*100)/100;var s = f.toString();var rs = s.indexOf('.');if (rs < 0) {rs = s.length;s += '.';}while (s.length <= rs + 2) {s += '0';}return s;}