What Will Happen Before the Data is Ready? Look through your code and make sure it won’t blow up if the data isn’t ready (if the value is null). Be especially careful if the data is initialized to or can become null or undefined! {user && user.name ? user.name : "Not loaded yet&quo...

If you absolutely need to run some code before a component renders, then the solution is to avoid rendering that component at all, until you’re ready. That means conditionally rendering it in the parent, which would look something like this. More detail in the comments: function Child({ items...

1 componentWillMount()2 set the initial state in the constructor3 render()4 componentDidMount()5 setState()6 render() Note : In any state change rend...

...

Note: Assuming that you have a Laravel App as the following path: c:xampphtdocslaravelapp1 To create new Laravel app go to (c:xampphtdocslaravel) folder with command prompt and write the following command as: c:xampphtdocslaravel>composer create-project laravel/laravel app...

Step 1: Install axios client >npm install axios Step 2: Import axios library import axios from 'axios' Step 3: And the get call the function as below axios.get(apiUrl).then((repos) => { console.log(repos.data); }); GET Example loadJSONaxios(){ ax...

import React, { Component } from 'react' export class Subject extends Component { constructor(props){ super(props); this.state={items:[],error: null,isLoaded: false}; } componentDidMount(){ this.loadJSON(); } loadJSON(){ ...

import React, { Component } from 'react' export class Contact extends Component { constructor(props){ super(props); this.state={name:"Jahid",message:""}; this.txtNameRef=React.createRef(); } componentDidMount(){ this.txtNameR...

App.js import React from 'react'; import ReactDOM from "react-dom"; import { BrowserRouter,Redirect, Link, Route, Switch } from "react-router-dom"; function Nav(){ return( <> <ul> <li><Link to="/da...

import React, { Component } from 'react' export class Message extends Component { constructor(props){ super(props) this.state={name:"Jahid",message:""} } messageHandler=()=>{ this.setState({message:"Thank you"}) } ...