1# native_interface_arkweb.h
2
3
4## Overview
5
6Declares APIs used to inject objects and execute JavaScript code.
7
8**Library**: libohweb.so
9
10**System capability**: SystemCapability.Web.Webview.Core
11
12**Since**: 11
13
14**Related module**: [Web](_web.md)
15
16
17## Summary
18
19
20### Types
21
22| Name| **Description**| 
23| -------- | -------- |
24| typedef void(\* [NativeArkWeb_OnJavaScriptCallback](_web.md#nativearkweb_onjavascriptcallback)) (const char \*) | Defines a callback used to return the result after the JavaScript code is executed. | 
25| typedef char \*(\* [NativeArkWeb_OnJavaScriptProxyCallback](_web.md#nativearkweb_onjavascriptproxycallback)) (const char \*\*argv, int32_t argc) | Defines a callback of the injected object. | 
26| typedef void(\* [NativeArkWeb_OnValidCallback](_web.md#nativearkweb_onvalidcallback)) (const char \*) | Defines a callback used when the \<Web> component is valid. | 
27| typedef void(\* [NativeArkWeb_OnDestroyCallback](_web.md#nativearkweb_ondestroycallback)) (const char \*) | Defines a callback used when the \<Web> component is destroyed. | 
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29
30### Functions
31
32| Name| Description| 
33| -------- | -------- |
34| void [OH_NativeArkWeb_RunJavaScript](_web.md#oh_nativearkweb_runjavascript) (const char \*webTag, const char \*jsCode, [NativeArkWeb_OnJavaScriptCallback](_web.md#nativearkweb_onjavascriptcallback) callback) | Runs a piece of JavaScript code in the displaying page. | 
35| void [OH_NativeArkWeb_RegisterJavaScriptProxy](_web.md#oh_nativearkweb_registerjavascriptproxy) (const char \*webTag, const char \*objName, const char \*\*methodList, [NativeArkWeb_OnJavaScriptProxyCallback](_web.md#nativearkweb_onjavascriptproxycallback) \*callback, int32_t size, bool needRefresh) | Registers an object and a list of functions. | 
36| void [OH_NativeArkWeb_UnregisterJavaScriptProxy](_web.md#oh_nativearkweb_unregisterjavascriptproxy) (const char \*webTag, const char \*objName) | Unregisters an object. This will deletes the object and its callback function. | 
37| void [OH_NativeArkWeb_SetJavaScriptProxyValidCallback](_web.md#oh_nativearkweb_setjavascriptproxyvalidcallback) (const char \*webTag, [NativeArkWeb_OnValidCallback](_web.md#nativearkweb_onvalidcallback) callback) | Sets a callback used when an object can be registered. | 
38| [NativeArkWeb_OnValidCallback](_web.md#nativearkweb_onvalidcallback) [OH_NativeArkWeb_GetJavaScriptProxyValidCallback](_web.md#oh_nativearkweb_getjavascriptproxyvalidcallback) (const char \*webTag) | Obtains the callback used when a registered object is valid. | 
39| void [OH_NativeArkWeb_SetDestroyCallback](_web.md#oh_nativearkweb_setdestroycallback) (const char \*webTag, [NativeArkWeb_OnDestroyCallback](_web.md#nativearkweb_ondestroycallback) callback) | Sets a callback used when a component is destroyed. | 
40| [NativeArkWeb_OnDestroyCallback](_web.md#nativearkweb_ondestroycallback) [OH_NativeArkWeb_GetDestroyCallback](_web.md#oh_nativearkweb_getdestroycallback) (const char \*webTag) | Obtains the callback used when a registered component is destroyed. | 
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