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chore(docs): Add API Examples in reference documentation (#329)

* Add reference examples for:
- onError
- onNavigationStateChange
- originWhiteList
- renderError
- renderLoading
- onShouldStartLoadWithRequest

* Update to use jsx as code
Add properties of objects passed into methods

* Add examples for:
- onLoad
- onLoadEnd
- onLoadStart
- onLoadProgress
- style

* Add object descriptions, fix style issues, and remove onShouldStartLoad example

Object Descriptions for:
- onLoad
- onLoadEnd
- onLoadStart
- onLoadProgress

* Update Reference.md
Malcolm Scruggs 5 년 전
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      docs/Reference.md

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@@ -147,6 +147,35 @@ Function that is invoked when the `WebView` load fails.
147 147
 | -------- | -------- |
148 148
 | function | No       |
149 149
 
150
+Example:
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+
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+```jsx
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+<WebView
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+   source={{ uri: "https://facebook.github.io/react-native" }}
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+   onError={(syntheticEvent) => {
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+     const { nativeEvent } = syntheticEvent
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+     console.warn('WebView error: ', nativeEvent)
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+   }}
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+ />
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+```
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+
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+Function passed to `onError` is called with a SyntheticEvent wrapping a nativeEvent with these properties:
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+
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+ ```
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+ canGoBack
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+ canGoForward
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+ code
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+ description
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+ didFailProvisionalNavigation
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+ domain
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+ loading
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+ target
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+ title
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+ url
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+```
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+> **_Note_**
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+> Domain is only used on iOS
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+
150 179
 ---
151 180
 
152 181
 ### `onLoad`
@@ -157,6 +186,29 @@ Function that is invoked when the `WebView` has finished loading.
157 186
 | -------- | -------- |
158 187
 | function | No       |
159 188
 
189
+Example:
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+
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+```jsx
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+<WebView
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+  source={{uri: 'https://facebook.github.io/react-native'}}
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+  onLoad={(syntheticEvent) => {
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+    const { nativeEvent } = syntheticEvent;
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+    this.url = nativeEvent.url;
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+  }}
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+/>
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+```
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+
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+Function passed to `onLoad` is called with a SyntheticEvent wrapping a nativeEvent with these properties:
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+
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+ ```
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+ canGoBack
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+ canGoForward
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+ loading
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+ target
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+ title
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+ url
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+```
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+
160 212
 ---
161 213
 
162 214
 ### `onLoadEnd`
@@ -167,6 +219,31 @@ Function that is invoked when the `WebView` load succeeds or fails.
167 219
 | -------- | -------- |
168 220
 | function | No       |
169 221
 
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+
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+Example:
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+
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+```jsx
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+<WebView
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+  source={{uri: 'https://facebook.github.io/react-native'}}
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+  onLoadEnd={(syntheticEvent) => {
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+    // update component to be aware of loading status
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+    const { nativeEvent } = syntheticEvent;
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+    this.isLoading = nativeEvent.loading;
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+  }}
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+/>
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+```
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+
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+Function passed to `onLoadEnd` is called with a SyntheticEvent wrapping a nativeEvent with these properties:
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+
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+ ```
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+ canGoBack
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+ canGoForward
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+ loading
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+ target
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+ title
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+ url
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+```
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+
170 247
 ---
171 248
 
172 249
 ### `onLoadStart`
@@ -177,6 +254,31 @@ Function that is invoked when the `WebView` starts loading.
177 254
 | -------- | -------- |
178 255
 | function | No       |
179 256
 
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+
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+Example:
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+
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+```jsx
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+<WebView
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+  source={{uri: 'https://facebook.github.io/react-native/='}}
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+  onLoadStart={(syntheticEvent) => {
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+    // update component to be aware of loading status
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+    const { nativeEvent } = syntheticEvent;
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+    this.isLoading = nativeEvent.loading;
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+  }}
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+/>
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+```
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+
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+Function passed to `onLoadStart` is called with a SyntheticEvent wrapping a nativeEvent with these properties:
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+
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+ ```
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+ canGoBack
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+ canGoForward
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+ loading
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+ target
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+ title
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+ url
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+```
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+
180 282
 ---
181 283
 
182 284
 ### `onLoadProgress`
@@ -192,6 +294,29 @@ Function that is invoked when the `WebView` is loading.
192 294
 | -------- | -------- |
193 295
 | function | No       |
194 296
 
297
+Example:
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+
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+```jsx
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+<WebView
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+   source={{ uri: "https://facebook.github.io/react-native" }}
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+   onLoadProgress={({ nativeEvent }) => {
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+     this.loadingProgress = nativeEvent.progress
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+   }}
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+ />
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+```
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+
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+Function passed to `onLoadProgress` is called with a SyntheticEvent wrapping a nativeEvent with these properties:
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+
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+ ```
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+ canGoBack
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+ canGoForward
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+ loading
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+ progress
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+ target
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+ title
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+ url
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+```
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+
195 320
 ---
196 321
 
197 322
 ### `onMessage`
@@ -214,6 +339,29 @@ Function that is invoked when the `WebView` loading starts or ends.
214 339
 | -------- | -------- |
215 340
 | function | No       |
216 341
 
342
+Example:
343
+
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+```jsx
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+<WebView
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+   source={{ uri: "https://facebook.github.io/react-native" }}
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+   onNavigationStateChange={(navState) => {
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+    // Keep track of going back navigation within component
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+    this.canGoBack = navState.canGoBack;
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+}} />
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+```
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+
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+The `navState` object includes these properties:
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+
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+ ```
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+ canGoBack
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+ canGoForward
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+ loading
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+ navigationType
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+ target
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+ title
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+ url
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+```
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+
217 365
 ---
218 366
 
219 367
 ### `originWhitelist`
@@ -224,6 +372,16 @@ List of origin strings to allow being navigated to. The strings allow wildcards
224 372
 | ---------------- | -------- |
225 373
 | array of strings | No       |
226 374
 
375
+Example:
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+
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+```jsx
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+//only allow URIs that begin with https:// or git://
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+<WebView
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+   source={{ uri: "https://facebook.github.io/react-native" }}
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+   originWhitelist={['https://*', 'git://*']}
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+ />
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+```
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+
227 385
 ---
228 386
 
229 387
 ### `renderError`
@@ -234,6 +392,18 @@ Function that returns a view to show if there's an error.
234 392
 | -------- | -------- |
235 393
 | function | No       |
236 394
 
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+
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+Example:
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+
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+```jsx
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+<WebView
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+   source={{ uri: "https://facebook.github.io/react-native" }}
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+   renderError={(errorName) => <Error name={errorName} /> }
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+ />
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+```
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+
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+The function passed to `renderError` will be called with the name of the error 
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+
237 407
 ---
238 408
 
239 409
 ### `renderLoading`
@@ -244,6 +414,17 @@ Function that returns a loading indicator. The startInLoadingState prop must be
244 414
 | -------- | -------- |
245 415
 | function | No       |
246 416
 
417
+
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+Example:
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+
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+```jsx
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+<WebView
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+   source={{ uri: "https://facebook.github.io/react-native" }}
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+   startInLoadingState={true}
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+   renderLoading={() => <Loading /> }
425
+ />
426
+```
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+
247 428
 ---
248 429
 
249 430
 ### `scalesPageToFit`
@@ -293,6 +474,31 @@ lockIdentifier
293 474
 navigationType
294 475
 ```
295 476
 
477
+Example:
478
+
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+```jsx
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+<WebView
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+  source={{ uri: "https://facebook.github.io/react-native" }}
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+  onShouldStartLoadWithRequest={(request) => {
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+    // Only allow navigating within this website
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+    return request.url.startsWith("https://facebook.github.io/react-native")
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+  }}
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+/>
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+```
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+
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+The `request` object includes these properties:
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+
491
+```
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+title
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+url
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+loading
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+target
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+canGoBack
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+canGoForward
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+lockIdentifier
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+navigationType
500
+```
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+
296 502
 ---
297 503
 
298 504
 ### `startInLoadingState`
@@ -313,6 +519,15 @@ A style object that allow you to customize the `WebView` style. Please note that
313 519
 | ----- | -------- |
314 520
 | style | No       |
315 521
 
522
+Example:
523
+
524
+```jsx
525
+<WebView
526
+   source={{ uri: "https://facebook.github.io/react-native" }}
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+   style={{marginTop: 20}}
528
+ />
529
+```
530
+
316 531
 ---
317 532
 
318 533
 ### `decelerationRate`