diff --git a/zh-cn/application-dev/reference/apis/js-apis-util.md b/zh-cn/application-dev/reference/apis/js-apis-util.md
index 79f186953eaf82c951f7ba19973b0e29b1ada9e4..d9de989e446559f8219341e2b4e7d321ca2b3c2c 100755
--- a/zh-cn/application-dev/reference/apis/js-apis-util.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-util.md
@@ -588,7 +588,7 @@ let that = new util.TextEncoder()
 let buffer = new ArrayBuffer(4)
 let dest = new Uint8Array(buffer)
 let result = new Object()
-result = that.encodeInto('abcd', dest)
+result = that.encodeIntoUint8Array('abcd', dest)
   ```
 
 ### encodeInto<sup>(deprecated)</sup>