by Sai gowtham

How to Loop inside React JSX

These two examples show you how to loop inside a react component JSX.

Using For loop

import React from 'react';

function App(){
   const arr = [1,2,3,4];
   const newArr = [];
   for (let i=0;i<arr.length;i++){
       newArr.push(<li key={i}>{arr[i]}</li>)
   }

  return(
     <ul>{newArr}</ul>
  )
}

Using the Map method

import React from 'react';

function App(){
   const arr = [1,2,3,4];

  return(
     <ul>
      {arr.map((e,i)=>{
         return <li key={i}>{e}</li>
       })}
     </ul>
  )
}

Top Udemy Courses

JavaScript - The Complete Guide 2020 (Beginner + Advanced)
JavaScript - The Complete Guide 2020 (Beginner + Advanced)
45,614 students enrolled
52 hours of video content
View Course
React - The Complete Guide (incl Hooks, React Router, Redux)
React - The Complete Guide (incl Hooks, React Router, Redux)
284,472 students enrolled
40 hours of video content
View Course
Vue - The Complete Guide (w/ Router, Vuex, Composition API)
Vue - The Complete Guide (w/ Router, Vuex, Composition API)
130,921 students enrolled
48.5 hours of video content
View Course