年龄计算逻辑优化

frontend/pc-web/app/view/basic/student/StudentDetailModel.js

@@ -18,20 +18,13 @@ Ext.define('school.view.basic.student.StudentDetailModel', {
                 
                 var age = 0;
 
-                if(nYear < vYear) {
+                if(nYear > vYear) {
                     age = nYear - vYear;
-                }else {
-                    age = nYear - vYear;
-                    if(nMonth < vMonth) {
+                    if((nMonth < vMonth) || (nMonth == vMonth && nDay < vDay)) {
                         age--;
-                    }else if(nMonth == vMonth){
-                        if(nDay < vDay) {
-                            age--;
-                        }
                     }
                 }
 
-                
                 this.set('stu_age', age);
                 return v;
             }