Answers for "constructor react"

1

react construct

constructor(props) {
    super(props);
  	//...
}
Posted by: Guest on September-11-2021
3

react native class component constructor

import React from 'react';  
import { View, TextInput } from "react-native";

class App extends React.Component {  
  constructor(props){  
    super(props);  
    this.state = {  
         name: "" 
      }  
    this.handleChange = this.handleChange.bind(this);  
  }
  handleChange(text){
    this.setState({ name: text })
    console.log(this.props);  
  }  
  render() {  
    return (  
    <View>
      <TextInput 
      	value={this.state.name} 
  		onChangeText={(text) =>this.handleChange(text)}
      />
    </View>  
  }  
}  
export default App;
Posted by: Guest on August-28-2020
15

state react

class Example extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      count: 0
    };
  }

  render() {
    return (
      <div>
        <p>You clicked {this.state.count} times</p>
        <button onClick={() => this.setState({ count: this.state.count + 1 })}>
          Click me
        </button>
      </div>
    );
  }
}
Posted by: Guest on March-13-2020
0

shouldcomponentupdate

shouldComponentUpdate(nextProps, nextState) {
  return true;
}
Posted by: Guest on June-08-2020
2

component did mmount

componentDidUpdate(prevProps, prevState, snapshot)
Posted by: Guest on May-01-2020

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