数字格式化，添加分隔符

src/main/resources/static/assets/js/project_common.js

@@ -33,7 +33,10 @@ function f2(x) {
  * @returns {string}
  */
 function f2Fixed(f) {
-    return Number(f).toFixed(2);
+    //return Number(f).toFixed(2);
+
+    //格式化413,423,423.24
+    return f.toLocaleString('zh',{minimumFractionDigits: 2, maximumFractionDigits: 2, useGrouping: true});
 }