update js samples

samples/client/petstore/javascript-promise-es6/src/model/Animal.js

@@ -67,7 +67,7 @@ class Animal {
     static validateJSON(data) {
         // check to make sure all required properties are present in the JSON string
         for (const property of Animal.RequiredProperties) {
-            if (!data[property]) {
+            if (!data.hasOwnProperty(property)) {
                 throw new Error("The required field `" + property + "` is not found in the JSON data: " + JSON.stringify(data));
             }
         }

samples/client/petstore/javascript-promise-es6/src/model/BasquePig.js

@@ -69,7 +69,7 @@ class BasquePig {
     static validateJSON(data) {
         // check to make sure all required properties are present in the JSON string
         for (const property of BasquePig.RequiredProperties) {
-            if (!data[property]) {
+            if (!data.hasOwnProperty(property)) {
                 throw new Error("The required field `" + property + "` is not found in the JSON data: " + JSON.stringify(data));
             }
         }

samples/client/petstore/javascript-promise-es6/src/model/Cat.js

@@ -68,7 +68,7 @@ class Cat {
     static validateJSON(data) {
         // check to make sure all required properties are present in the JSON string
         for (const property of Cat.RequiredProperties) {
-            if (!data[property]) {
+            if (!data.hasOwnProperty(property)) {
                 throw new Error("The required field `" + property + "` is not found in the JSON data: " + JSON.stringify(data));
             }
         }

samples/client/petstore/javascript-promise-es6/src/model/Category.js

@@ -67,7 +67,7 @@ class Category {
     static validateJSON(data) {
         // check to make sure all required properties are present in the JSON string
         for (const property of Category.RequiredProperties) {
-            if (!data[property]) {
+            if (!data.hasOwnProperty(property)) {
                 throw new Error("The required field `" + property + "` is not found in the JSON data: " + JSON.stringify(data));
             }
         }

samples/client/petstore/javascript-promise-es6/src/model/DanishPig.js

@@ -69,7 +69,7 @@ class DanishPig {
     static validateJSON(data) {
         // check to make sure all required properties are present in the JSON string
         for (const property of DanishPig.RequiredProperties) {
-            if (!data[property]) {
+            if (!data.hasOwnProperty(property)) {
                 throw new Error("The required field `" + property + "` is not found in the JSON data: " + JSON.stringify(data));
             }
         }

samples/client/petstore/javascript-promise-es6/src/model/Dog.js

@@ -68,7 +68,7 @@ class Dog {
     static validateJSON(data) {
         // check to make sure all required properties are present in the JSON string
         for (const property of Dog.RequiredProperties) {
-            if (!data[property]) {
+            if (!data.hasOwnProperty(property)) {
                 throw new Error("The required field `" + property + "` is not found in the JSON data: " + JSON.stringify(data));
             }
         }

samples/client/petstore/javascript-promise-es6/src/model/EnumTest.js

@@ -89,7 +89,7 @@ class EnumTest {
     static validateJSON(data) {
         // check to make sure all required properties are present in the JSON string
         for (const property of EnumTest.RequiredProperties) {
-            if (!data[property]) {
+            if (!data.hasOwnProperty(property)) {
                 throw new Error("The required field `" + property + "` is not found in the JSON data: " + JSON.stringify(data));
             }
         }

samples/client/petstore/javascript-promise-es6/src/model/FormatTest.js

@@ -115,7 +115,7 @@ class FormatTest {
     static validateJSON(data) {
         // check to make sure all required properties are present in the JSON string
         for (const property of FormatTest.RequiredProperties) {
-            if (!data[property]) {
+            if (!data.hasOwnProperty(property)) {
                 throw new Error("The required field `" + property + "` is not found in the JSON data: " + JSON.stringify(data));
             }
         }

samples/client/petstore/javascript-promise-es6/src/model/Name.js

@@ -74,7 +74,7 @@ class Name {
     static validateJSON(data) {
         // check to make sure all required properties are present in the JSON string
         for (const property of Name.RequiredProperties) {
-            if (!data[property]) {
+            if (!data.hasOwnProperty(property)) {
                 throw new Error("The required field `" + property + "` is not found in the JSON data: " + JSON.stringify(data));
             }
         }

samples/client/petstore/javascript-promise-es6/src/model/OuterObjectWithEnumProperty.js

@@ -65,7 +65,7 @@ class OuterObjectWithEnumProperty {
     static validateJSON(data) {
         // check to make sure all required properties are present in the JSON string
         for (const property of OuterObjectWithEnumProperty.RequiredProperties) {
-            if (!data[property]) {
+            if (!data.hasOwnProperty(property)) {
                 throw new Error("The required field `" + property + "` is not found in the JSON data: " + JSON.stringify(data));
             }
         }

samples/client/petstore/javascript-promise-es6/src/model/Pet.js

@@ -83,7 +83,7 @@ class Pet {
     static validateJSON(data) {
         // check to make sure all required properties are present in the JSON string
         for (const property of Pet.RequiredProperties) {
-            if (!data[property]) {
+            if (!data.hasOwnProperty(property)) {
                 throw new Error("The required field `" + property + "` is not found in the JSON data: " + JSON.stringify(data));
             }
         }