diff --git a/en/application-dev/reference/apis/js-apis-url.md b/en/application-dev/reference/apis/js-apis-url.md
index fd826706700190a3d2f042a155cca1a2e1c96b81..89b4294e3985c3e925f8585a23879b0745a97192 100755
--- a/en/application-dev/reference/apis/js-apis-url.md
+++ b/en/application-dev/reference/apis/js-apis-url.md
@@ -108,10 +108,10 @@ Obtains all the key-value pairs based on the specified key.
 **Example**
 
 ```js
-let urlObject = new Url.URL('https://developer.exampleUrl/?fod=1&bard=2'); 
-let paramsObject = new Url.URLSearchParams(urlObject.search.slice(1)); 
-paramsObject.append('fod', 3); // Add a second value for the fod parameter.
-console.log(params.getAll('fod')) // Output ["1","3"].
+let urlObject = new Url.URL('https://developer.exampleUrl/?fod=1&bard=2');
+let params = new Url.URLSearchParams(urlObject.search.slice(1));
+params.append('fod', '3'); // Add a second value for the fod parameter.
+console.log(params.getAll('fod').toString()) // Output ["1","3"].
 ```
 
 
diff --git a/en/application-dev/reference/apis/js-apis-util.md b/en/application-dev/reference/apis/js-apis-util.md
index 2ac8daeb3799908d57a5b7a2c5fd456dcfee8f59..f884709dc2b5befba783461330750661538736b9 100755
--- a/en/application-dev/reference/apis/js-apis-util.md
+++ b/en/application-dev/reference/apis/js-apis-util.md
@@ -119,16 +119,16 @@ Processes an asynchronous function and returns a promise version.
 
 **Example**
   ```js
-  function aysnFun(str1, str2, callback) {
-      if (typeof str1 === 'string' && typeof str2 === 'string') {
-          callback(null, str1 + str2);
-      } else {
-          callback('type err');
-      }
+  function aysnFun(str1, str2) {
+    if (typeof str1 === 'object' && typeof str2 === 'object') {
+      return str2
+    } else {
+      return str1
+    }
   }
-  let newPromiseObj = util.promiseWrapper(aysnFun)("Hello", 'World');
-  newPromiseObj.then(res => {
-      console.log(res);
+  let newPromiseObj = util.promiseWrapper(aysnFun);
+  newPromiseObj({ err: "type error" }, {value:'HelloWorld'}).then(res => {
+    console.log(res);
   })
   ```