diff --git a/api/@internal/component/ets/web.d.ts b/api/@internal/component/ets/web.d.ts
index 27551e01d652a9c69d5b4346a1eff29fdab5a60a..67793d041d51c81ec354c9628332f86da8d38c9a 100644
--- a/api/@internal/component/ets/web.d.ts
+++ b/api/@internal/component/ets/web.d.ts
@@ -1360,13 +1360,22 @@ declare class WebAttribute extends CommonMethod<WebAttribute> {
   overviewModeAccess(overviewModeAccess: boolean): WebAttribute;
 
   /**
-   * Sets the atio of the text zoom.
-   * @param textZoomAtio The atio of the text zoom.
+   * Sets the ratio of the text zoom.
+   * @param textZoomAtio The ratio of the text zoom.
    *
    * @since 8
+   * @deprecated since 9
    */
   textZoomAtio(textZoomAtio: number): WebAttribute;
 
+  /**
+   * Sets the ratio of the text zoom.
+   * @param textZoomRatio The ratio of the text zoom.
+   *
+   * @since 9
+   */
+   textZoomRatio(textZoomRatio: number): WebAttribute;
+
   /**
    * Sets whether the Web access the database.
    * @param databaseAccess {@code true} means the Web access the database; {@code false} otherwise.
@@ -1634,12 +1643,20 @@ declare class WebAttribute extends CommonMethod<WebAttribute> {
 
   /**
    * Notify search result to host application through onSearchResultReceive.
-   * @param callback function Triggered when the host application call searchAllAsync
+   * @param callback Function Triggered when the host application call searchAllAsync
    * or searchNext api on WebController and the request is valid.
    *
    * @since 9
    */
    onSearchResultReceive(callback: (event?: {activeMatchOrdinal: number, numberOfMatches: number, isDoneCounting: boolean}) => void): WebAttribute
+
+  /**
+   * Triggered when the scroll bar slides to the specified position.
+   * @param callback Function Triggered when the scroll bar slides to the specified position.
+   *
+   * @since 9
+   */
+   onScroll(callback: (event: {xOffset: number, yOffset: number}) => void): WebAttribute;
 }
 
 declare const Web: WebInterface;