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</span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"></span><span class="token keyword" style="color:#c5a5c5">import</span><span class="token plain"> React</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">{</span><span class="token plain"> useState </span><span class="token punctuation" style="color:#657b83">}</span><span class="token plain"> </span><span class="token keyword" style="color:#c5a5c5">from</span><span class="token plain"> </span><span class="token string" style="color:#8dc891">'react'</span><span class="token punctuation" style="color:#657b83">;</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"></span><span class="token keyword" style="color:#c5a5c5">import</span><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">{</span><span class="token plain"> View</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"> Text</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"> Button</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"> StyleSheet </span><span class="token punctuation" style="color:#657b83">}</span><span class="token plain"> </span><span class="token keyword" style="color:#c5a5c5">from</span><span class="token plain"> </span><span class="token string" style="color:#8dc891">'react-native'</span><span class="token punctuation" style="color:#657b83">;</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain" style="display:inline-block">
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</span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"></span><span class="token keyword" style="color:#c5a5c5">const</span><span class="token plain"> </span><span class="token function-variable function" style="color:#79b6f2">App</span><span class="token plain"> </span><span class="token operator" style="color:#fc929e">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">(</span><span class="token punctuation" style="color:#657b83">)</span><span class="token plain"> </span><span class="token operator" style="color:#fc929e">=></span><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">{</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token keyword" style="color:#c5a5c5">const</span><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">[</span><span class="token plain">count</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"> setCount</span><span class="token punctuation" style="color:#657b83">]</span><span class="token plain"> </span><span class="token operator" style="color:#fc929e">=</span><span class="token plain"> </span><span class="token function" style="color:#79b6f2">useState</span><span class="token punctuation" style="color:#657b83">(</span><span class="token number" style="color:#5a9bcf">0</span><span class="token punctuation" style="color:#657b83">)</span><span class="token punctuation" style="color:#657b83">;</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain" style="display:inline-block">
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</span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token keyword" style="color:#c5a5c5">return</span><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">(</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token tag punctuation" style="color:#657b83"><</span><span class="token tag class-name" style="color:#fac863">View</span><span class="token tag" style="color:#fc929e"> </span><span class="token tag attr-name" style="color:#c5a5c5">style</span><span class="token tag script language-javascript script-punctuation punctuation" style="color:#657b83">=</span><span class="token tag script language-javascript punctuation" style="color:#657b83">{</span><span class="token tag script language-javascript" style="color:#fc929e">styles</span><span class="token tag script language-javascript punctuation" style="color:#657b83">.</span><span class="token tag script language-javascript" style="color:#fc929e">container</span><span class="token tag script language-javascript punctuation" style="color:#657b83">}</span><span class="token tag punctuation" style="color:#657b83">></span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token tag punctuation" style="color:#657b83"><</span><span class="token tag class-name" style="color:#fac863">Text</span><span class="token tag punctuation" style="color:#657b83">></span><span class="token plain">You clicked </span><span class="token punctuation" style="color:#657b83">{</span><span class="token plain">count</span><span class="token punctuation" style="color:#657b83">}</span><span class="token plain"> times</span><span class="token tag punctuation" style="color:#657b83"></</span><span class="token tag class-name" style="color:#fac863">Text</span><span class="token tag punctuation" style="color:#657b83">></span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token tag punctuation" style="color:#657b83"><</span><span class="token tag class-name" style="color:#fac863">Button</span><span class="token tag" style="color:#fc929e"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token tag" style="color:#fc929e"> </span><span class="token tag attr-name" style="color:#c5a5c5">onPress</span><span class="token tag script language-javascript script-punctuation punctuation" style="color:#657b83">=</span><span class="token tag script language-javascript punctuation" style="color:#657b83">{</span><span class="token tag script language-javascript punctuation" style="color:#657b83">(</span><span class="token tag script language-javascript punctuation" style="color:#657b83">)</span><span class="token tag script language-javascript" style="color:#fc929e"> </span><span class="token tag script language-javascript operator" style="color:#fc929e">=></span><span class="token tag script language-javascript" style="color:#fc929e"> </span><span class="token tag script language-javascript function" style="color:#79b6f2">setCount</span><span class="token tag script language-javascript punctuation" style="color:#657b83">(</span><span class="token tag script language-javascript" style="color:#fc929e">count </span><span class="token tag script language-javascript operator" style="color:#fc929e">+</span><span class="token tag script language-javascript" style="color:#fc929e"> </span><span class="token tag script language-javascript number" style="color:#5a9bcf">1</span><span class="token tag script language-javascript punctuation" style="color:#657b83">)</span><span class="token tag script language-javascript punctuation" style="color:#657b83">}</span><span class="token tag" style="color:#fc929e"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token tag" style="color:#fc929e"> </span><span class="token tag attr-name" style="color:#c5a5c5">title</span><span class="token tag attr-value punctuation" style="color:#657b83">=</span><span class="token tag attr-value punctuation" style="color:#657b83">"</span><span class="token tag attr-value" style="color:#8dc891">Click me!</span><span class="token tag attr-value punctuation" style="color:#657b83">"</span><span class="token tag" style="color:#fc929e"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token tag" style="color:#fc929e"> </span><span class="token tag punctuation" style="color:#657b83">/></span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token tag pLine truncated
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</span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"></span><span class="token comment" style="color:#93a1a1">// React Native Styles</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"></span><span class="token keyword" style="color:#c5a5c5">const</span><span class="token plain"> styles </span><span class="token operator" style="color:#fc929e">=</span><span class="token plain"> StyleSheet</span><span class="token punctuation" style="color:#657b83">.</span><span class="token function" style="color:#79b6f2">create</span><span class="token punctuation" style="color:#657b83">(</span><span class="token punctuation" style="color:#657b83">{</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> container</span><span class="token punctuation" style="color:#657b83">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">{</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> flex</span><span class="token punctuation" style="color:#657b83">:</span><span class="token plain"> </span><span class="token number" style="color:#5a9bcf">1</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> justifyContent</span><span class="token punctuation" style="color:#657b83">:</span><span class="token plain"> </span><span class="token string" style="color:#8dc891">'center'</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> alignItems</span><span class="token punctuation" style="color:#657b83">:</span><span class="token plain"> </span><span class="token string" style="color:#8dc891">'center'</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">}</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"></span><span class="token punctuation" style="color:#657b83">}</span><span class="token punctuation" style="color:#657b83">)</span><span class="token punctuation" style="color:#657b83">;</span></div></div></div></div></div></div><p>As shown in the image, there is no difference in handling the <code>state</code> between <a href="https://reactjs.org/docs/state-and-lifecycle.html" target="_blank" rel="noopener noreferrer">React</a> and <code>React Native</code>. You can use the state of your components both in classes and in functional components using <a href="https://reactjs.org/docs/hooks-intro.html" target="_blank" rel="noopener noreferrer">hooks</a>!</p><p>In the following example we will show the same above counter example using classes.</p><div class="snack-player" data-snack-name="Hello Classes" data-snack-description="Example usage" data-snack-code="import%20React%2C%20%7B%20Component%20%7D%20from%20'react'%0Aimport%20%7B%0A%20%20StyleSheet%2C%0A%20%20TouchableOpacity%2C%0A%20%20Text%2C%0A%20%20View%2C%0A%7D%20from%20'react-native'%0A%0Aclass%20App%20extends%20Component%20%7B%0A%20%20state%20%3D%20%7B%0A%20%20%20%20count%3A%200%0A%20%20%7D%0A%0A%20%20onPress%20%3D%20()%20%3D%3E%20%7B%0A%20%20%20%20this.setState(%7B%0A%20%20%20%20%20%20count%3A%20this.state.count%20%2B%201%0A%20%20%20%20%7D)%0A%20%20%7D%0A%0A%20render()%20%7B%0A%20%20%20%20return%20(%0A%20%20%20%20%20%20%3CView%20style%3D%7Bstyles.container%7D%3E%0A%20%20%20%20%20%20%20%20%3CTouchableOpacity%0A%20%20%20%20%20%20%20%20%20style%3D%7Bstyles.button%7D%0A%20%20%20%20%20%20%20%20%20onPress%3D%7Bthis.onPress%7D%0A%20%20%20%20%20%20%20%20%3E%0A%20%20%20%20%20%20%20%20%20%3CText%3EClick%20me%3C%2FText%3E%0A%20%20%20%20%20%20%20%20%3C%2FTouchableOpacity%3E%0A%20%20%20%20%20%20%20%20%3CView%3E%0A%20%20%20%20%20%20%20%20%20%20%3CText%3E%0A%20%20%20%20%20%20%20%20%20%20%20%20You%20clicked%20%7B%20this.state.count%20%7D%20times%0A%20%20%20%20%20%20%20%20%20%20%3C%2FText%3E%0A%20%20%20%20%20%20%20%20%3C%2FView%3E%0A%20%20%20%20%20%20%3C%2FView%3E%0A%20%20%20%20)%0A%20%20%7D%0A%7D%0A%0Aconst%20styles%20%3D%20StyleSheet.create(%7B%0A%20%20container%3A%20%7B%0A%20%20%20%20flex%3A%201%2C%0A%20%20%20%20justifyContent%3A%20'center'%2C%0A%20%20%20%20alignItems%3A%20'center'%2C%0A%20%20%7D%2C%0A%20%20button%3A%20%7B%0A%20%20%20%20alignItems%3A%20'center'%2C%0A%20%20%20%20backgroundColor%3A%20'%23DDDDDD'%2C%0A%20%20%20%20padding%3A%2010%2C%0A%20%20%20%20marginLine truncated
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</span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"></span><span class="token comment" style="color:#93a1a1">// React Native Styles</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"></span><span class="token keyword" style="color:#c5a5c5">const</span><span class="token plain"> styles </span><span class="token operator" style="color:#fc929e">=</span><span class="token plain"> StyleSheet</span><span class="token punctuation" style="color:#657b83">.</span><span class="token function" style="color:#79b6f2">create</span><span class="token punctuation" style="color:#657b83">(</span><span class="token punctuation" style="color:#657b83">{</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> container</span><span class="token punctuation" style="color:#657b83">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">{</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> flex</span><span class="token punctuation" style="color:#657b83">:</span><span class="token plain"> </span><span class="token number" style="color:#5a9bcf">1</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> justifyContent</span><span class="token punctuation" style="color:#657b83">:</span><span class="token plain"> </span><span class="token string" style="color:#8dc891">'center'</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> alignItems</span><span class="token punctuation" style="color:#657b83">:</span><span class="token plain"> </span><span class="token string" style="color:#8dc891">'center'</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">}</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"></span><span class="token punctuation" style="color:#657b83">}</span><span class="token punctuation" style="color:#657b83">)</span><span class="token punctuation" style="color:#657b83">;</span></div></div></div></div></div></div><p>As shown in the image, there is no difference in handling the <code>state</code> between <a href="https://reactjs.org/docs/state-and-lifecycle.html" target="_blank" rel="noopener noreferrer">React</a> and <code>React Native</code>. You can use the state of your components both in classes and in functional components using <a href="https://reactjs.org/docs/hooks-intro.html" target="_blank" rel="noopener noreferrer">hooks</a>!</p><p>In the following example we will show the same above counter example using classes.</p><div class="snack-player" data-snack-name="Hello Classes" data-snack-description="Example usage" data-snack-code="import%20React%2C%20%7B%20Component%20%7D%20from%20'react'%0Aimport%20%7B%0A%20%20StyleSheet%2C%0A%20%20TouchableOpacity%2C%0A%20%20Text%2C%0A%20%20View%2C%0A%7D%20from%20'react-native'%0A%0Aclass%20App%20extends%20Component%20%7B%0A%20%20state%20%3D%20%7B%0A%20%20%20%20count%3A%200%0A%20%20%7D%0A%0A%20%20onPress%20%3D%20()%20%3D%3E%20%7B%0A%20%20%20%20this.setState(%7B%0A%20%20%20%20%20%20count%3A%20this.state.count%20%2B%201%0A%20%20%20%20%7D)%0A%20%20%7D%0A%0A%20render()%20%7B%0A%20%20%20%20return%20(%0A%20%20%20%20%20%20%3CView%20style%3D%7Bstyles.container%7D%3E%0A%20%20%20%20%20%20%20%20%3CTouchableOpacity%0A%20%20%20%20%20%20%20%20%20style%3D%7Bstyles.button%7D%0A%20%20%20%20%20%20%20%20%20onPress%3D%7Bthis.onPress%7D%0A%20%20%20%20%20%20%20%20%3E%0A%20%20%20%20%20%20%20%20%20%3CText%3EClick%20me%3C%2FText%3E%0A%20%20%20%20%20%20%20%20%3C%2FTouchableOpacity%3E%0A%20%20%20%20%20%20%20%20%3CView%3E%0A%20%20%20%20%20%20%20%20%20%20%3CText%3E%0A%20%20%20%20%20%20%20%20%20%20%20%20You%20clicked%20%7B%20this.state.count%20%7D%20times%0A%20%20%20%20%20%20%20%20%20%20%3C%2FText%3E%0A%20%20%20%20%20%20%20%20%3C%2FView%3E%0A%20%20%20%20%20%20%3C%2FView%3E%0A%20%20%20%20)%0A%20%20%7D%0A%7D%0A%0Aconst%20styles%20%3D%20StyleSheet.create(%7B%0A%20%20container%3A%20%7B%0A%20%20%20%20flex%3A%201%2C%0A%20%20%20%20justifyContent%3A%20'center'%2C%0A%20%20%20%20alignItems%3A%20'center'%2C%0A%20%20%7D%2C%0A%20%20button%3A%20%7B%0A%20%20%20%20alignItems%3A%20'center'%2C%0A%20%20%20%20backgroundColor%3A%20'%23DDDDDD'%2C%0A%20%20%20%20padding%3A%2010%2C%0A%20%20%20%20marginLine truncated
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<script src="/styles.73cf9778.js"></script>
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<script src="/runtime~main.4cdc75d5.js"></script>
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<script src="/main.16cb52a8.js"></script>
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<script src="/main.3acb0f97.js"></script>
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<script src="/1.17a0cf36.js"></script>
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<script src="/2.37a050b1.js"></script>
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<script src="/1f391b9e.c148b120.js"></script>
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