How to fetch data from external json file in React

Export your JSON file through a variable (using let, const), and import it into your file where you need that JSON data.

have a look:-

sample.js

const sampleData = [
   {
     "firstName": "Sam",
     "lastName": "Jones",
     "age": "a"
   },
  {
     "firstName": "Sam1",
     "lastName": "Jones1",
     "age": "a"
   },
]

export default sampleData;

and now importing it in my file where i want to use my data

home.js

import React, { Component } from 'react'
import sampleData from './sample.json'

export default class Home extends Component{
    render(){
         return(
              <div>
                { sampleData.map((item, i) => {
                   return (
                        <div>
                          <h4> My Name is {item.firstName} {item.lastName} and my age is {item.age}.</h4>
                        </div>
                   )
                 }
              </div>
          )
     }
}