Map is one of the most popular and widely used functions when working with React. It has two prominent use cases. It’s quite similar to how thefilter()works. The first one is to modify the state of the application and the other to render a list of elements efficiently. Let’s start ...
When we call the method on a value that is not an arraymap(), we get the error “TypeError: map is not a function”. To fix this error, we need toconsole.logkeep track of the value we are calling the map() method on and make sure we only call map on valid arrays. Below is s...
First, you need to importMarkerandInfoWindowcomponents from thegoogle-maps-reactlibrary in order to help you achieve loading of the two. src/App.js importReact,{Component}from'react';import{Map,GoogleApiWrapper,InfoWindow,Marker}from'google-maps-react'; Copy Notice that your component bef...
Leaflet is a very powerful tool, and we can create a lot of different kinds of maps. This tutorial will help you understand how to create an advanced map along with the help of React and Vanilla JS. In this article, Shajia Abidi is going to represent the locations of the non-medical ...
In React, refs are used for storing values that don’t trigger a re-render when updated. We can also assign refs to DOM elements so that we can reference the ref to manipulate the DOM element assigned to the ref. Refs can also be assigned components, but we need to do one extra step...
./src/App.js Line 1:8: 'React' is defined but never used no-unused-vars ... That’s thelintertelling you that you aren’t using the imported React code. When you add the lineimport React from 'react'to your code, you are importing JavaScript code that converts the JSX to React ...
Tables are really useful when it comes to presenting large amounts of data to your users. However, it's not always as easy as it first may seem to build a dynamic table in React. In this article, we will take a quick look at how to create such a table an
First, we’ll import Leaflet, MapTiler SDK JS and the required React functions. We use a client component because Leaflet uses the window object. Add these lines on top ofmap.jsfile. 'use client'importReact,{useRef,useEffect,useState}from'react';import"leaflet/dist/leaflet.css";importLfrom...
The Azure Maps Web SDK provides a Map Control that enables the customization of interactive maps with your own content and imagery for display in your web or mobile applications. This module is a helper library that makes it easy to use the Azure Maps REST services in web or Node.js applic...
The helper function transforms or processes the original data to generate a return value. The map() method uses the return values to build a new array. It returns this array to the code that called map(). In the example code above, this new array is stored in newArray. ...