| domStorageAccess | boolean | false | Whether to enable the DOM Storage API permission. By default, the permission is disabled.|
| fileAccess | boolean | false | Whether to enable in-application rawfile access through [$rawfile(filepath/filename)](../../ui/ts-resource-access.md). By default, this feature is enabled. |
| fileFromUrlAccess | boolean | true | Whether to allow JavaScript scripts on web pages to access the content in [$rawfile(filepath/filename)](../../ui/ts-resource-access.md). By default, this feature is disabled. |
| imageAccess | boolean | true | Whether to enable automatic image loading. By default, this feature is enabled. |
| javaScriptProxy | { <br> object: object, <br> name: string, <br> methodList: Array\<string\>, <br> controller: WebController <br>} | - | JavaScript object to be injected into the window. Methods of this object can be invoked in the window. The parameters in this attribute cannot be updated.<br>**object** indicates the object to be registered. Methods can be declared, but not attributes. The parameters and return value can only be of the string, number, or Boolean type.<br>**name** indicates the name of the object to be registered, which is the same as that invoked in the window. After registration, the window can use this name to access the JavaScript object at the application side.<br>**methodList** indicates the methods of the JavaScript object to be registered at the application side.<br>**controller** indicates the controller.|
| javaScriptAccess | boolean | true | Whether JavaScript scripts can be executed. By default, JavaScript scripts can be executed. |
| mixedMode | [MixedMode](#mixedmode) | MixedMode.None | Whether to enable loading of HTTP and HTTPS hybrid content can be loaded. By default, this feature is disabled.|
| onlineImageAccess | boolean | true | Whether to enable access to online images through HTTP and HTTPS. By default, this feature is enabled.|
| zoomAccess | boolean | true | Whether to enable zoom gestures. By default, zoom gestures are enabled. |
| overviewModeAccess | boolean | true | Whether to use the overview mode to load web pages. By default, this mode is used. |
| databaseAccess | boolean | false | Whether to enable database access. By default, this feature is disabled. |
| textZoomAtio | number | 100 | Text zoom ratio of the page. The default value is **100**, which indicates 100%. |
| userAgent | string | - | User agent. |
> **NOTE**<br>
>
> Only the following universal attributes are supported: [width](ts-universal-attributes-size.md#Attributes), [height](ts-universal-attributes-size.md#Attributes), [padding](ts-universal-attributes-size.md#Attributes), [margin](ts-universal-attributes-size.md#Attributes), and [border](ts-universal-attributes-border.md#Attributes).
| onAlert(callback: (event?: { url: string; message: string; result: [JsResult](#jsresult) }) => boolean) | <p>Triggered when **alert()** is invoked to display an alert dialog box on the web page.<br>If the callback returns **false**, the default dialog box is displayed. If the callback returns **true**, a system application can use the system dialog box (allows only the confirm operation) and invoke the **JsResult** API to notify the **\<Web>** component of the user's operation.<br>**url**: URL of the web page where the dialog box is displayed.<br>**message**: information displayed in the dialog box.<br>**JsResult**: the user's operation.</p> |
| onBeforeUnload(callback: (event?: { url: string; message: string; result: [JsResult](#jsresult) }) => boolean) | <p>Triggered when the current page is about to exit after the user refreshes or closes the page.<br>If the callback returns **false**, the default dialog box is displayed. If the callback returns **true**, a system application can use the system dialog box (allows the confirm and cancel operations) and invoke the **JsResult** API to notify the **\<Web>** component of the user's operation.<br>**url**: URL of the web page where the dialog box is displayed.<br>**message**: information displayed in the dialog box.<br>**JsResult**: the user's operation.</p> |
| onConfirm(callback: (event?: { url: string; message: string; result: [JsResult](#jsresult) }) => boolean) | <p>Triggered when **confirm()** is invoked by the web page.<br>If the callback returns **false**, the default dialog box is displayed. If the callback returns **true**, a system application can use the system dialog box (allows the confirm and cancel operations) and invoke the **JsResult** API to notify the **\<Web>** component of the user's operation.<br>**url**: URL of the web page where the dialog box is displayed.<br>**message**: information displayed in the dialog box.<br>**JsResult**: the user's operation.</p> |
| onPrompt<sup>9+</sup>(callback: (event?: { url: string; message: string; value: string; result: [JsResult](#jsresult) }) => boolean) | <p>Triggered when **prompt()** is invoked by the web page.<br>If the callback returns **false**, the default dialog box is displayed. If the callback returns **true**, a system application can use the system dialog box (allows the confirm and cancel operations) and invoke the **JsResult** API to notify the **\<Web>** component of the user's operation.<br>**url**: URL of the web page where the dialog box is displayed.<br>**message**: information displayed in the dialog box.<br>**value**: default value in the dialog box.<br>**JsResult**: the user's operation and dialog box content.</p> |
| onConsole(callback: (event?: { message: [ConsoleMessage](#consolemessage) }) => boolean) | <p>Triggered when the host application is notified of a JavaScript console message.<br>**message**: console message.</p> |
| onDownloadStart(callback: (event?: { url: string, userAgent: string, contentDisposition: string, mimetype: string, contentLength: number }) => void) | <p>Triggered when a download task starts on the web page.<br>**url**: URL for the download task.<br>**userAgent**: name of the user agent (UA) for the download task.<br>**contentDisposition**: Content-Disposition response header returned by the server, which may be empty.<br>**mimetype**: content media type (MIME) returned by the server.<br>**contentLength**: length of the file returned by the server.</p> |
| onErrorReceive(callback: (event?: { request: [WebResourceRequest](#webresourceerror), error: [WebResourceError](#webresourceerror) }) => void) | <p>Triggered when an error occurs during web page loading.<br>For better results, simplify the implementation logic in the callback.<br>**request**: encapsulation of a web page request.<br>**error**: encapsulation of a web page resource loading error.</p> |
| onHttpErrorReceive(callback: (event?: { request: [WebResourceRequest](#webresourceerror), response: [WebResourceResponse](#webresourceresponse) }) => void) | <p>Triggered when an HTTP error (the response code is greater than or equal to 400) occurs during web page resource loading.<br>**request**: encapsulation of a web page request.<br>**response**: encapsulation of a web page response.</p>|
| onPageBegin(callback: (event?: { url: string }) => void) | <p>Triggered when the web page starts to be loaded. This API is triggered only for the main frame content, and not for the iframe or frameset content.<br>**url**: URL of the page.</p> |
| onPageEnd(callback: (event?: { url: string }) => void) | <p>Triggered when the web page loading is complete. This API is triggered only for the main frame content.<br>**url**: URL of the page.</p> |
| onProgressChange(callback: (event?: { newProgress: number }) => void) | <p>Triggered when the web page loading progress changes.<br>**newProgress**: new loading progress. The value is an integer ranging from 0 to 100.</p> |
| onTitleReceive(callback: (event?: { title: string }) => void) | <p>Triggered when the document title of the web page is changed.<br>**title**: document title.</p> |
| onRefreshAccessedHistory(callback: (event?: { url: string, isRefreshed: boolean }) => void) | <p>Triggered when loading of the web page is complete. This callback function is used by an application to update the historical link it accessed.<br>**url**: URL to be accessed.<br>**isRefreshed**: whether the page is reloaded. The value **true** means that the page is reloaded, and **false** means that the page is newly loaded.</p> |
| onRenderExited(callback: (event?: { renderExitReason: [RenderExitReason](#renderexitreason) }) => void) | <p>Triggered when the rendering process exits abnormally.<br>**renderExitReason**: cause for the abnormal exit of the rendering process.</p> |
| onShowFileSelector(callback: (event?: { result: [FileSelectorResult](#fileselectorresult), fileSelector: [FileSelectorParam](#fileselectorparam) }) => void) | <p>Triggered to process an HTML form whose input type is **file**, in response to the tapping of the **Select File** button.<br>**result**: file selection result to be sent to the web component.<br>**fileSelector**: information about the file selector.</p> |
| onUrlLoadIntercept(callback: (event?: { data:string \|[WebResourceRequest](#webresourcerequest) }) => boolean) | <p>Triggered before the **\<Web>** component loads the URL to determine whether to block the access. The callback returns **true** if the access is blocked, and **false** otherwise.<br>**data**: URL information.</p> |
| headerKey | string | Key of the request/response header. |
| headerValue | string | Value of the request/response header.|
### fileAccess
fileAccess(fileAccess: boolean)
### WebResourceResponse
Sets whether to enable the access to the file system in the application. By default, this feature is disabled. Access to the files specified through [$rawfile(filepath/filename)](../../ui/ts-resource-access.md) are not affected by this attribute.
- APIs
**Parameters**
| Name | Type | Mandatory | Default Value | Description |
| ProcessAbnormalTermination | The rendering process exits abnormally. |
| ProcessWasKilled | The rendering process receives a SIGKILL message or is manually terminated.|
| ProcessCrashed | The rendering process crashes due to a segmentation error or other errors. |
| ProcessOom | The program memory is running low. |
| ProcessExitUnknown | Other reason. |
Sets whether to allow the use of JavaScript scripts on web pages for access to content in the application file system. By default, this feature is disabled. Access to the files specified through [$rawfile(filepath/filename)](../../ui/ts-resource-access.md) are not affected by this attribute.
### MixedMode
**Parameters**
| Name | Type | Mandatory | Default Value | Description |
| fileFromUrlAccess | boolean | Yes | false | Whether to allow the use of JavaScript scripts on web pages for access to content in the application file system. |
| Default | The cache that has not expired is used to load the resources. If the resources do not exist in the cache, they will be obtained from the Internet.|
| None | The cache is used to load the resources. If the resources do not exist in the cache, they will be obtained from the Internet. |
| Online | The cache is not used to load the resources. All resources are obtained from the Internet. |
| Only | The cache alone is used to load the resources. |
### imageAccess
### FileSelectorResult
Notifies the **\<Web>** component of the file selection result.
imageAccess(imageAccess: boolean)
- APIs
Sets whether to enable automatic image loading. By default, this feature is enabled.
| getTitle(): string | Obtains the title of the file selector. |
| getMode(): FileSelectorMode | Obtains the mode of the file selector. |
| getAcceptType(): Array\<string\> | Obtains the file filtering type. |
| isCapture(): boolean | Checks whether multimedia capabilities are invoked.|
### javaScriptAccess
### FileSelectorMode
| Name | Description |
| -------------------- | ---------- |
| FileOpenMode | Open and upload a file. |
| FileOpenMultipleMode | Open and upload multiple files. |
| FileOpenFolderMode | Open and upload a folder.|
| FileSaveMode | Save a file. |
javaScriptAccess(javaScriptAccess: boolean)
## WebController
Sets whether JavaScript scripts can be executed. By default, JavaScript scripts can be executed.
Defines a **WebController** to control the behavior of the **\<Web>** component. A **WebController** can control only one **\<Web>** component, and the APIs in the **WebController** can be invoked only after it has been bound to the target **\<Web>** component.
**Parameters**
| Name | Type | Mandatory | Default Value | Description |
| name | string | Yes | - | Name of the registered JavaScript object, which can be used to invoke the corresponding object on the application side from the web side.|
**Parameters**
| Name | Type | Mandatory | Default Value | Description |
If **baseUrl** is set to a data URL, the encoded string will be loaded by the **\<Web>** component using the data protocol.
### textZoomRatio
If **baseUrl** is set to an HTTP or HTTPS URL, the encoded string will be processed by the **\<Web>** component as a non-encoded string in a manner similar to **loadUrl**.
textZoomRatio(textZoomRatio: number)
- options
Sets the text zoom ratio of the page. The default value is **100**, which indicates 100%.
| Name | Type | Mandatory | Default Value | Description |
| data | string | Yes | - | Character string obtained after being Base64 or URL encoded. |
| mimeType | string | Yes | - | Media type (MIME). |
| encoding | string | Yes | - | Encoding type, which can be Base64 or URL. |
| baseUrl | string | No | - | URL (HTTP/HTTPS/data compliant), which is assigned by the **\<Web>** component to **window.origin**.|
| historyUrl | string | No | - | Historical record URL. If this parameter is not empty, it can be managed in historical records to implement page going backward and forward. This parameter is invalid when **baseUrl** is left empty.|
**Parameters**
| Name | Type | Mandatory | Default Value | Description |
| headers | Array\<[Header](#header)\> | No | [] | Additional HTTP request header of the URL.|
> **NOTE**<br>
>
> Only the following universal attributes are supported: [width](ts-universal-attributes-size.md#attributes), [height](ts-universal-attributes-size.md#attributes), [padding](ts-universal-attributes-size.md#attributes), [margin](ts-universal-attributes-size.md#attributes), and [border](ts-universal-attributes-border.md#attributes).
### onActive
## Events
onActive(): void
The universal events are not supported.
Invoked to instruct the **\<Web>** component to enter the foreground, active state.
| boolean | If the callback returns **false**, the default dialog box is displayed. If the callback returns **true**, a system application can use the system dialog box (allows the confirm and cancel operations) and invoke the **JsResult** API to notify the **\<Web>** component of the user's operation.|
Triggered when the current page is about to exit after the user refreshes or closes the page.
Injects a JavaScript object into the window and invokes the methods of the object in the window. After the registration, the **refresh** API must be invoked for the registration to take effect.
| boolean | If the callback returns **false**, the default dialog box is displayed. If the callback returns **true**, a system application can use the system dialog box (allows the confirm and cancel operations) and invoke the **JsResult** API to notify the **\<Web>** component of the user's operation.|
| Name | Type | Mandatory | Default Value | Description |
| object | object | Yes | - | Application-side JavaScript object to be registered. Methods can be declared, but not attributes. The parameters and return value can only be of the string, number, or Boolean type.|
| name | string | Yes | - | Name of the object to be registered, which is the same as that invoked in the window. After registration, the window can use this name to access the JavaScript object at the application side.|
| methodList | Array\<string\> | Yes | - | Methods of the JavaScript object to be registered at the application side. |
Asynchronously executes a JavaScript script. This API uses a callback to return the script execution result. **runJavaScript** can be invoked only after **loadUrl** is executed. For example, it can be executed in **onPageEnd**.
| callback | (result: string) => void | No | - | Callback used to return the result. Returns **null** if the JavaScript script fails to be executed or no value is returned.|
| boolean | If the callback returns **false**, the default dialog box is displayed. If the callback returns **true**, a system application can use the system dialog box (allows the confirm and cancel operations) and invoke the **JsResult** API to notify the **\<Web>** component of the user's operation.|
| boolean | If the callback returns **false**, the default dialog box is displayed. If the callback returns **true**, a system application can use the system dialog box (allows the confirm and cancel operations) and invoke the **JsResult** API to notify the **\<Web>** component of the user's operation.|
| WebCookie | Cookie management object. For details, see [WebCookie](#webcookie).|
## WebCookie
Manages behavior of cookies in **\<Web>** components. All **\<Web>** components in an application share a **WebCookie**. You can use the **getCookieManager** API in **controller** to obtain the **WebCookie** for subsequent cookie management.
| isRefreshed | boolean | Whether the page is reloaded. The value **true** means that the page is reloaded, and **false** means that the page is newly loaded.|
| [MessageLevel](#messagelevel)| Level of the console message.|
### getSourceId
getSourceId(): string
Obtains the path and name of the web page source file.
**Return value**
| Type | Description |
| ------ | ------------- |
| string | Path and name of the web page source file.|
## JsResult
Implements the **JsResult** object, which indicates the result returned to the **\<Web>** component to indicate the user operation performed in the dialog box. For details about the sample code, see [onAlert Event](#onalert).
### handleCancel
handleCancel(): void
Notifies the **\<Web>** component of the user's cancel operation in the dialog box.
### handleConfirm
handleConfirm(): void
Notifies the **\<Web>** component of the user's confirm operation in the dialog box.
### handlePromptConfirm<sup>9+</sup>
handlePromptConfirm(result: string): void
Notifies the **\<Web>** component of the user's confirm operation in the dialog box as well as the dialog box content.
**Parameters**
| Name | Type | Mandatory | Default Value | Description |
| ------ | ------ | ---- | ---- | ----------- |
| result | string | Yes | - | User input in the dialog box.|
## WebResourceError
Implements the **WebResourceError** object. For details about the sample code, see [onErrorReceive](#onerrorreceive).
### getErrorCode
getErrorCode(): number
Obtains the error code for resource loading.
**Return value**
| Type | Description |
| ------ | ----------- |
| number | Error code for resource loading.|
### getErrorInfo
getErrorInfo(): string
Obtains error information about resource loading.
**Return value**
| Type | Description |
| ------ | ------------ |
| string | Error information about resource loading.|
## WebResourceRequest
Implements the **WebResourceRequest** object. For details about the sample code, see [onErrorReceive](#onerrorreceive).
### getRequestHeader
getResponseHeader() : Array\<Header\>
Obtains the information about the resource request header.
**Return value**
| Type | Description |
| -------------------------- | ---------- |
| Array\<[Header](#header)\> | Information about the resource request header.|
### getRequestUrl
getRequestUrl(): string
Obtains the URL of the resource request.
**Return value**
| Type | Description |
| ------ | ------------- |
| string | URL of the resource request.|
### isMainFrame
isMainFrame(): boolean
Checks whether the resource request is in the main frame.
**Return value**
| Type | Description |
| ------- | ---------------- |
| boolean | Whether the resource request is in the main frame.|
### isRedirect
isRedirect(): boolean
Checks whether the resource request is redirected by the server.
**Return value**
| Type | Description |
| ------- | ---------------- |
| boolean | Whether the resource request is redirected by the server. |
### isRequestGesture
isRequestGesture(): boolean
Checks whether the resource request is associated with a gesture (for example, a tap).
**Return value**
| Type | Description |
| ------- | -------------------- |
| boolean | Whether the resource request is associated with a gesture (for example, a tap). |
## Header
Describes the request/response header returned by the **\<Web>** component.
| Name | Type | Description |
| ----------- | ------ | ------------- |
| headerKey | string | Key of the request/response header. |
| headerValue | string | Value of the request/response header.|
## WebResourceResponse
Implements the **WebResourceResponse** object. For details about the sample code, see [onHttpErrorReceive](#onhttperrorreceive).
### getReasonMessage
getReasonMessage(): string
Obtains the status code description of the resource response.
**Return value**
| Type | Description |
| ------ | ------------- |
| string | Status code description of the resource response.|
### getResponseCode
getResponseCode(): number
Obtains the status code of the resource response.
**Return value**
| Type | Description |
| ------ | ----------- |
| number | Status code of the resource response.|
### getResponseData
getResponseData(): string
Obtains the data in the resource response.
**Return value**
| Type | Description |
| ------ | --------- |
| string | Data in the resource response.|
### getResponseEncoding
getResponseEncoding(): string
Obtains the encoding string of the resource response.
**Return value**
| Type | Description |
| ------ | ---------- |
| string | Encoding string of the resource response.|
| boolean | Returns **true** if the authentication is successful; returns **false** otherwise.|
### isHttpAuthInfoSaved<sup>9+</sup>
isHttpAuthInfoSaved(): boolean
Uses the password cached on the server for authentication.
**Return value**
| Type | Description |
| ------- | ------------------------- |
| boolean | Returns **true** if the authentication is successful; returns **false** otherwise.|
## PermissionRequest<sup>9+</sup>
Implements the **PermissionRequest** object. For details about the sample code, see [onPermissionRequest](#onpermissionrequest9).
### deny<sup>9+</sup>
deny(): void
Denies the permission requested by the web page.
### getOrigin<sup>9+</sup>
getOrigin(): string
Obtains the origin of this web page.
**Return value**
| Type | Description |
| ------- | --------------------- |
| string | Origin of the web page that requests the permission.|
### getAccessibleResource<sup>9+</sup>
getAccessibleResource(): Array\<string\>
Obtains the list of accessible resources requested for the web page. For details about the resource types, see [ProtectedResourceType](#protectedresourcetype9).
**Return value**
| Type | Description |
| --------------- | ----------------------- |
| Array\<string\> | List of accessible resources requested by the web page.|
### grant<sup>9+</sup>
grant(resources: Array\<string\>): void
Grants the permission for resources requested by the web page.
**Parameters**
| Name | Type | Mandatory| Default Value| Description |
| resources | Array\<string\> | Yes | - | List of accessible resources requested by the web page.|
## WebController
Defines a **WebController** to control the behavior of the **\<Web>** component. A **WebController** can control only one **\<Web>** component, and the APIs in the **WebController** can be invoked only after it has been bound to the target **\<Web>** component.
### Creating an Object
```
webController: WebController = new WebController()
Performs a specific number of steps forward or backward on the current page based on the history stack. No redirection will be performed if the corresponding page does not exist in the history stack.
**Parameters**
| Name | Type | Mandatory | Default Value | Description |
| ---- | ------ | ---- | ---- | ----------- |
| step | number | Yes | - | Number of the steps to take.|
Deletes a specific application JavaScript object that is registered with the window through **registerJavaScriptProxy**. The deletion takes effect immediately, with no need for invoking the [refresh](#refresh) API.
**Parameters**
| Name | Type | Mandatory | Default Value | Description |
| name | string | Yes | - | Name of the registered JavaScript object, which can be used to invoke the corresponding object on the application side from the web side.|
Loads data. If **baseUrl** is empty, the specified character string will be loaded using the data protocol.
If **baseUrl** is set to a data URL, the encoded string will be loaded by the **\<Web>** component using the data protocol.
If **baseUrl** is set to an HTTP or HTTPS URL, the encoded string will be processed by the **\<Web>** component as a non-encoded string in a manner similar to **loadUrl**.
**Parameters**
| Name | Type | Mandatory | Default Value | Description |
| data | string | Yes | - | Character string obtained after being Base64 or URL encoded. |
| mimeType | string | Yes | - | Media type (MIME). |
| encoding | string | Yes | - | Encoding type, which can be Base64 or URL. |
| baseUrl | string | No | - | URL (HTTP/HTTPS/data compliant), which is assigned by the **\<Web>** component to **window.origin**.|
| historyUrl | string | No | - | Historical record URL. If this parameter is not empty, it can be managed in historical records to implement page going backward and forward. This parameter is invalid when **baseUrl** is left empty.|
Registers a JavaScript object and invokes the methods of the object in the window. You must invoke the [refresh](#refresh) API for the registration to take effect.
**Parameters**
| Name | Type | Mandatory | Default Value | Description |
| object | object | Yes | - | Application-side JavaScript object to be registered. Methods can be declared, but not attributes. The parameters and return value can only be of the string, number, or Boolean type.|
| name | string | Yes | - | Name of the object to be registered, which is the same as that invoked in the window. After registration, the window can use this name to access the JavaScript object at the application side.|
| methodList | Array\<string\> | Yes | - | Methods of the JavaScript object to be registered at the application side. |
**Example**
```ts
// xxx.ets
@Entry
@Component
structIndex{
controller:WebController=newWebController()
testObj={
test:(data)=>{
return"ArkUI Web Component";
},
toString:()=>{
console.log('Web Component toString');
}
}
build(){
Column(){
Row(){
Button('Register JavaScript To Window').onClick(()=>{
Asynchronously executes a JavaScript script. This API uses a callback to return the script execution result. **runJavaScript** can be invoked only after **loadUrl** is executed. For example, it can be executed in **onPageEnd**.
**Parameters**
| Name | Type | Mandatory | Default Value | Description |
| callback | (result: string) => void | No | - | Callback used to return the result. Returns **null** if the JavaScript script fails to be executed or no value is returned.|
| [HitTestType](#hittesttype)| Element type of the area being clicked.|
### getExtra<sup>9+</sup>
getExtra(): string
Obtains the extra information of the area being clicked. If the area being clicked is an image or a link, the extra information is the URL of the image or link.
**Return value**
| Type | Description |
| ------ | ------------ |
| string | Extra information of the area being clicked.|
## WebCookie
Manages behavior of cookies in **\<Web>** components. All **\<Web>** components in an application share a **WebCookie**. You can use the **getCookieManager** API in **controller** to obtain the **WebCookie** for subsequent cookie management.
### setCookie<sup>9+</sup>
setCookie(url: string, value: string): boolean
Sets the cookie. This API returns the result synchronously.
**Parameters**
| Name | Type | Mandatory | Default Value | Description |
Implements the **WebStorage** object, which can be used to manage the Web SQL and the HTML5 Web Storage API. All **\<Web>** components in an application share one **WebStorage**.
| callback | AsyncCallback<Array<[WebStorageOrigin](#webstorageorigin9)>> | Yes | Callback used to return the information about the origins. For details, see **WebStorageOrigin**.|
| Promise<Array<[WebStorageOrigin](#webstorageorigin9)>> | Promise used to return the information about the origins. For details, see **WebStorageOrigin**.|
Searches the web page for content that matches the keyword specified by **'searchString'** and highlights the matches on the page. This API returns the result asynchronously through [onSearchResultReceive](#onsearchresultreceive9).
**Parameters**
| Name | Type | Mandatory | Default Value | Description |
| activeMatchOrdinal | number | Sequence number of the current match, which starts from 0.|
| numberOfMatches | number | Total number of matches.|
| isDoneCounting | boolean | Whether the search operation on the current page is complete. This API may be called multiple times until **isDoneCounting** is **true**.|
| Default | The cache that has not expired is used to load the resources. If the resources do not exist in the cache, they will be obtained from the Internet.|
| None | The cache is used to load the resources. If the resources do not exist in the cache, they will be obtained from the Internet. |
| Online | The cache is not used to load the resources. All resources are obtained from the Internet. |
| Only | The cache alone is used to load the resources. |
## FileSelectorMode
| Name | Description |
| -------------------- | ---------- |
| FileOpenMode | Open and upload a file. |
| FileOpenMultipleMode | Open and upload multiple files. |
| FileOpenFolderMode | Open and upload a folder.|
| FileSaveMode | Save a file. |
## HitTestType
| Name | Description |
| ------------- | ------------------------ |
| EditText | Editable area. |
| Email | Email address. |
| HttpAnchor | Hyperlink whose **src** is **http**. |
| HttpAnchorImg | Image with a hyperlink, where **src** is **http**.|
| Img | HTML::img tag. |
| Map | Geographical address. |
| Unknown | Unknown content. |
## ProtectedResourceType<sup>9+</sup>
| Name | Description | Remarks |
| --------- | -------------- | -------------- |
| MidiSysex | MIDI SYSEX resources| Currently, only permission events can be reported. MIDI devices are not yet supported.|
## WebAsyncController
Implements the **WebAsyncController** object, which can be used to control the behavior of a **\<Web>** component with asynchronous callbacks. A **WebAsyncController **object controls one **\<Web>** component.
### Creating an Object
```
webController: WebController = new WebController();
webAsyncController: WebAsyncController = new WebAsyncController(webController);
| baseName | string | Yes| Save path. The value cannot be null.|
| autoName | boolean | Yes| Whether to automatically generate a file name.<br>The value **true** means to automatically generate a file name based on the URL of current page and the **baseName** value. In this case, **baseName** is regarded as a directory.<br>The value **false** means not to automatically generate a file name.|
| callback | AsyncCallback\<string> | Yes | Callback used to return the save path if the operation is successful and null otherwise.|
| baseName | string | Yes| Save path. The value cannot be null.|
| autoName | boolean | Yes| Determines whether to automatically generate a file name.<br>The value **true** means to automatically generate a file name based on the URL of current page and the **baseName** value. In this case, **baseName** is regarded as a directory.<br>The value **false** means not to automatically generate a file name.|
