ReactJS Create React Modal Open Popup Using reactjs-popup Dependency

In this tutorial, we will use the react-popup package which is a simple and Powerful react component. It's simple just add dependency import Popup from "reactjs-popup"; which you can add to your project by following command npm add reactjs-popup --save

Because reactjs-popup provides a child as function pattern, you have full control on Popup state

Full code example given below:

import React, { Component } from "react"; import "./styles.css"; import Popup from "reactjs-popup"; class App extends Component { constructor() { super(); this.state = { open: false }; this.openModal = this.openModal.bind(this); this.closeModal = this.closeModal.bind(this); this.popupOnClose = this.popupOnClose.bind(this); } openModal() { this.setState({ open: true }); } closeModal() { this.setState({ open: false }); } popupOnClose() {} render() { return ( <div> <span onClick={this.openModal}>Click here to open Popup</span> <Popup open={this.state.open} className="popup-modal-container-box" modal onOpen={e => this.popupOnClose(e)} onClose={this.popupOnClose} lockScroll={true} closeOnDocumentClick={false} > <h1>HELLO POPUP</h1> <span onClick={this.closeModal}>CLOSE</span> </Popup> </div> ); } } export default App;

Full example is created on CodeSandbox.IO https://codesandbox.io/s/reactjs-create-react-modal-open-popup-using-reactjs-popup-dependency-qthyq

ReactJS - You tried to redirect to the same route you're currently on

It's a common problem when you redirect on same route will give a warning like You tried to redirect to the same route you're currently on: /profile/2. It's because of when we define Route we can not define for every parameters like 1, 2, 3 etc. Normally we define our Route like: <Route path="/profile/:id" component={Profile} /> And this will handle every URL like http://example.com/profile/1, http://example.com/profile/2 etc.

But sometimes when we use Redirect component to redirect to another profile page from current profile page using the below code return <Redirect to={"/profile/" + this.state.id} push={true} />; The above warning thrown because our Route is same for all URL like /profile/1 as well as /profile/2.

To avoid this warning we need to define key to our Route like below <Route path="/profile/:id" render={props => { return <Profile {...props} key={props.match.params.id} />; }} />

Full example is created on CodeSandbox.IO https://codesandbox.io/s/you-tried-to-redirect-to-the-same-route-youre-currently-on-063ot

Using Google Place Autocomplete API in React

I want to have an auto completing location search bar in my react component

Reference Google Maps API JS library via /public/index.html file:

Get google API Key from here -> https://developers.google.com/places/web-service/get-api-key https://cloud.google.com/console/google/maps-apis/overview

You need to enable Maps JavaScript API & Places Api from below links -> https://console.developers.google.com/google/maps-apis/apis/maps-backend.googleapis.com https://console.developers.google.com/google/maps-apis/apis/places-backend.googleapis.com

import React from "react"; class MyComponent extends React.Component { constructor(props) { super(props); this.autocompleteInput = React.createRef(); this.autocomplete = null; this.handlePlaceChanged = this.handlePlaceChanged.bind(this); } componentDidMount() { this.autocomplete = new google.maps.places.Autocomplete( this.autocompleteInput.current, {"types": ["geocode"]} ); this.autocomplete.addListener('place_changed', this.handlePlaceChanged); } handlePlaceChanged(){ const place = this.autocomplete.getPlace(); this.props.onPlaceLoaded(place); } render() { return ( <input ref={this.autocompleteInput} id="autocomplete" placeholder="Enter your address" type="text"></input> ); } } export default MyComponent

bootstrap-datepicker with React: onChange doesn't fire while onClick does

bootstrap-datepicker with React: onChange doesn't fire while onClick does

import React, { Component } from 'react' import {Redirect} from "react-router-dom"; class MyComponent extends Component { constructor () { super(); this.state = { back: false, dateOfBirth: "", dateOfBirthInput: "" }; this.handleUserInput = this.handleUserInput.bind(this); } componentDidMount () { super.componentDidMount(); $(this.state.dateOfBirthInput).datepicker({ format: "mm/dd/yyyy" }); $(this.state.dateOfBirthInput).on('changeDate', function(e) { console.log(e); console.log(e.target.value); this.handleUserInput(e); }) } handleUserInput (e) { let name = e.target.name; let value = e.target.value; console.log(`Name=${name}, value=${value}`); this.setState({[name]: value}); } render () { if (this.state.back) { return <Redirect to={'/dashboard/user-profile'} push={true}/> } return ( <div> <div className="form-group row"> <label className={'col-12 col-sm-12 col-md-4 col-lg-3 col-xl-2 col-form-label'}>Date of birth</label> <div className="col-12 col-sm-12 col-md-8 col-lg-9 col-xl-10"> <div className='input-group date'> <input name={'dateOfBirth'} value={this.state.dateOfBirth} onChange={(e) => this.handleUserInput(e)} ref={(n) => this.state.dateOfBirthInput = n} type='text' className="form-control"/> </div> </div> </div> </div> ) } } export default MyComponent

Implementing Programically Redirect With React Router | React redirect to component | Redirect with React Router

A lot of these short blog posts are just for me to find later when I forget how to do something.

So, there is an span where there is a click event named goToAnotherPage, when clicked I just set state the edit variable true, and it redirect to another page using react component named Redirect as described in function goToAnotherPage.

import React, { Component } from 'react' import {Redirect} from 'react-router-dom' class SomePage extends Component { constructor () { super(); this.state = { edit: false }; this.goToAnotherPage = this.goToAnotherPage.bind(this); } componentDidMount () { super.componentDidMount(); } goToAnotherPage(e) { this.setState({'edit': true}); } render () { if (this.state.edit) { return <Redirect to={'/go-to-another-page'} push={true}/> } return ( <span onClick={(e) => this.goToAnotherPage(e)}>Go to another page</span> ) } } export default SomePage

ReactJS - Multiple Layout In React Using React Router | Using multiple layouts for react-router components

React Router is a standard routing library for React.

In the first step, we will create two different layout files (named CommonLayout and DashboardLayout) and their respective routes to implement multiple layouts in React.

CommonLayout import React, { Component } from 'react'; import {Route} from 'react-router-dom'; class CommonLayoutComponent extends React.Component{ constructor(props){ super(props); this.createRef = this.createRef.bind(this); } createRef(element) { console.log(element); } render() { return ( <div key="dashboard"> <div className="Content" ref={this.createRef}> {this.props.children} </div> </div> ); } } const CommonLayoutRoute = ({component: Component, ...rest}) => { return ( <Route {...rest} render={matchProps => ( <CommonLayoutComponent {...matchProps}> <Component {...matchProps} /> </CommonLayoutComponent> )} /> ) }; export default CommonLayoutRoute;

DashboardLayout import React, { Component } from 'react'; import { Route } from 'react-router-dom'; const DashboardLayoutRoute = ({component: Component, ...rest}) => { return ( <Route {...rest} render={matchProps => ( <div> <h3>Dashboard Layout</h3> <Component {...matchProps} /> </div> )} /> ) }; export default DashboardLayoutRoute;

Now, update your App.js file to use both - the layout and the component - as below.

import React, { Component } from 'react'; import { BrowserRouter as Router, Route, Redirect, Switch } from 'react-router-dom'; /** Layouts **/ import CommonLayoutRoute from "./CommonLayoutRoute"; import DashboardLayoutRoute from "./DashboardLayout"; /** Components **/ import LayoutPage1 from './LayoutPage1'; import LayoutPage2 from './LayoutPage2' /* App */ class App extends Component { render() { return ( <Router> <Switch> <Route exact path="/"> <Redirect to="/layout1" /> </Route> <CommonLayoutRoute path="/layout1" component={LayoutPage1} /> <DashboardRoute path="/layout2" component={LayoutPage2} /> </Switch> </Router> ); } } export default App;

Here, we have updated the App.js file as defined in the route. When we route to /layout1, then CommonLayoutRoute (our first layout) will be used as the master page for the component LayoutPage1. On the other hand, when we route to /layout2, then our second layout, i.e., DashbaordLayoutRoute will be used as the master page for the component LayoutPage2.

ReactJS - Preventing Form Submission

I've been experimenting with React. In my experiement, I'm using the React framework. When I click a button, I've noticed that the HTML form submits. Is there a way to prevent form submission when a button is clicked? Just need to add the following attribute to the form.

<form onSubmit={(e) => e.preventDefault()}> </form>

How to access a DOM element in React? What is the equilvalent of document.getElementById() in React | ReactJS access HTML Element Node Reference

React supports a good way to set refs called “callback refs”, which gives more fine-grain control over when refs are set and unset.

Instead of passing a ref attribute created by createRef(), you pass a function. The function receives the React component instance or HTML DOM element as its argument, which can be stored and accessed elsewhere.

The example below implements a common pattern: using the ref callback to store a reference to a DOM node in an instance property.

class CustomTextInput extends React.Component { constructor(props) { super(props); this.textInput = null; this.setTextInputRef = element => { this.textInput = element; }; this.focusTextInput = () => { // Focus the text input using the raw DOM API if (this.textInput) this.textInput.focus(); }; } componentDidMount() { // autofocus the input on mount this.focusTextInput(); } render() { // Use the `ref` callback to store a reference to the text input DOM // element in an instance field (for example, this.textInput). return ( <div> <input type="text" ref={this.setTextInputRef} /> <input type="button" value="Focus the text input" onClick={this.focusTextInput} /> </div> ); } }

ReactJS Render HTML string as real HTML in a React component

First need to install react-html-parser to render html as html element in react js.

Run below command to add the dependency: npm add react-html-parser

Then use as below: import ReactHtmlParser from 'react-html-parser';

import axios from 'axios' import React, { Component } from 'react' import { Link } from 'react-router-dom' import MainActivity from "./MainActivity"; import ReactHtmlParser from 'react-html-parser'; class ProjectsList extends MainActivity { constructor () { super(); this.state = { projects: [], loading: true, html: "" }; } componentDidMount () { axios.get(`${this.APP_URL}/api/projects`).then( response => { console.log(response); this.setState({ projects: response.data, loading: false, html: response.data.html }) }) } render () { if (this.state.loading) { return this.loader() } if (this.state.html) { return <div>{ ReactHtmlParser(this.state.html) }</div>; } const { projects } = this.state; return ( <div className='container py-4'> <div className='row justify-content-center'> <div className='col-md-8'> <div className='card'> <div className='card-header'>All Projects</div> <div className='card-body'> <Link className='btn btn-primary btn-sm mb-3' to='/project/create'> + Create New Project </Link> <ul className='list-group list-group-flush'> {projects.map(project => ( <Link className='list-group-item list-group-item-action d-flex justify-content-between align-items-center' to={`/project/${project.id}`} key={project.id}> {project.name} <span className='badge badge-primary badge-pill'>{project.tasks_count}</span> </Link> ))} </ul> </div> </div> </div> </div> </div> ) } } export default ProjectsList