1 /**
2 * 格式化数字
3 * Author : Z,Mingyu
4 * 参数：
5 * prmNum (Number) : 要格式化的数字
6 * prmPtn (String) : 格式化规则，例如：#,##0.00
7 * * prmNullValue : 当要格式化的数字为null、空或非数字时，返回的结果。默认为0
8 */
9 function formatNum(prmNum,prmPtn,prmNullValue){
10 var nullValue = prmNullValue ? prmNullValue : 0;
11 if(prmNum == "" || prmNum == null) return nullValue;
12 prmNum = prmNum.replace(/\,/g,"");
13 if(isNaN(prmNum)) return nullValue;
14 if(prmPtn == "" || prmPtn == null) return prmNum;
15 var ptnLen = prmPtn.length;
16 var pointIndex = prmPtn.indexOf(".");
17 var groupIndex = prmPtn.indexOf(",");
18 var pointLen = (pointIndex == -1 ? 0 : ptnLen - pointIndex - 1);
19 prmNum = parseFloat(prmNum).toFixed(pointLen) + "";
20 if(groupIndex != -1){
21 if(pointIndex == -1) pointIndex = ptnLen;
22 var len = pointIndex - groupIndex - 1;
23 var reg = new RegExp("(-?\\d+)(\\d{"+len+"})");
24 while(reg.test(prmNum)) prmNum = prmNum.replace(reg,"$1,$2");
25 }
26 return prmNum;
27 }
2 * 格式化数字
3 * Author : Z,Mingyu
4 * 参数：
5 * prmNum (Number) : 要格式化的数字
6 * prmPtn (String) : 格式化规则，例如：#,##0.00
7 * * prmNullValue : 当要格式化的数字为null、空或非数字时，返回的结果。默认为0
8 */
9 function formatNum(prmNum,prmPtn,prmNullValue){
10 var nullValue = prmNullValue ? prmNullValue : 0;
11 if(prmNum == "" || prmNum == null) return nullValue;
12 prmNum = prmNum.replace(/\,/g,"");
13 if(isNaN(prmNum)) return nullValue;
14 if(prmPtn == "" || prmPtn == null) return prmNum;
15 var ptnLen = prmPtn.length;
16 var pointIndex = prmPtn.indexOf(".");
17 var groupIndex = prmPtn.indexOf(",");
18 var pointLen = (pointIndex == -1 ? 0 : ptnLen - pointIndex - 1);
19 prmNum = parseFloat(prmNum).toFixed(pointLen) + "";
20 if(groupIndex != -1){
21 if(pointIndex == -1) pointIndex = ptnLen;
22 var len = pointIndex - groupIndex - 1;
23 var reg = new RegExp("(-?\\d+)(\\d{"+len+"})");
24 while(reg.test(prmNum)) prmNum = prmNum.replace(reg,"$1,$2");
25 }
26 return prmNum;
27 }
宠辱不惊，看庭前花开花落；去留无意，望天上云卷云舒