diff --git a/zh-cn/application-dev/reference/apis/js-apis-accessibility-extension-context.md b/zh-cn/application-dev/reference/apis/js-apis-accessibility-extension-context.md
index b01dfdc5f486c6accfe80de31d9fc691010010ad..8a27d422badf2f80b8a8015ccb072465796a58ab 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-accessibility-extension-context.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-accessibility-extension-context.md
@@ -244,6 +244,7 @@ getFocusElement(isAccessibilityFocus: boolean, callback: AsyncCallback\<Accessib
 
 ```ts
 let focusElement;
+let isAccessibilityFocus = true;
 try {
     axContext.getFocusElement(isAccessibilityFocus, (err, data) => {
     if (err) {
@@ -368,6 +369,7 @@ getWindowRootElement(windowId: number, callback: AsyncCallback\<AccessibilityEle
 
 ```ts
 let rootElement;
+let windowId = 10;
 try {
     axContext.getWindowRootElement(windowId, (err, data) => {
     if (err) {
@@ -698,7 +700,7 @@ let rootElement;
 try {
     rootElement.attributeValue(attributeName).then((data) => {
         console.log('get attribute value by name success');
-        attribtueValue = data;
+        attributeValue = data;
     }).catch((err) => {
         console.log('failed to get attribute value, because '  + JSON.stringify(err));
     });