- //保留两位小数
- //功能:将浮点数四舍五入,取小数点后2位
- function toDecimal(x) {
- var f = parseFloat(x);
- if (isNaN(f)) {
- return;
- }
- f = Math.round(x*100)/100;
- return f;
- }
- //制保留2位小数,如:2,会在2后面补上00.即2.00
- 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;
- }