In this tutorial, we'll walk through the process of creating a country flag selector using the react-flags-select package in a React application. This package allows users to choose a country by selecting its flag from a dropdown list. We'll cover how to set up the project, install and use the package, and customize the selector.

Prerequisites

To follow along with this tutorial, you should have basic knowledge of JavaScript and React. Make sure you have Node.js and npm (Node Package Manager) installed on your machine.

Step 1: Project Setup

Create a new React application using create-react-app or your preferred method:

npx create-react-app country-flag-selector
cd country-flag-selector

Step 2: Install Dependencies

In the project directory, install the required dependencies:

npm install react-flags-select

Step 3: Create and Style the Component

In your src directory, create a new file named flags.css.

.react-tel-input {
  font-family: "Roboto", sans-serif;
  font-size: 15px;
  position: relative;
  width: 100%;
}
.react-tel-input :disabled {
  cursor: not-allowed;
}
.flag {
  width: 25px;
  height: 20px;
  background-image: url("https://raw.githubusercontent.com/bl00mber/react-phone-input-2/master/src/style/common/high-res.png");
  background-repeat: no-repeat;
}
.ad {
  background-position: -48px -24px;
}
.ae {
  background-position: -72px -24px;
}
.af {
  background-position: -96px -24px;
}
.ag {
  background-position: -120px -24px;
}
.ai {
  background-position: -144px -24px;
}
.al {
  background-position: -168px -24px;
}
.am {
  background-position: -192px -24px;
}
.an {
  background-position: -216px -24px;
}
.ao {
  background-position: -240px -24px;
}
.aq {
  background-position: -264px -24px;
}
.ar {
  background-position: -288px -24px;
}
.as {
  background-position: -312px -24px;
}
.at {
  background-position: -336px -24px;
}
.au {
  background-position: -360px -24px;
}
.aw {
  background-position: -384px -24px;
}
.ax {
  background-position: 0px -48px;
}
.az {
  background-position: -24px -48px;
}
.ba {
  background-position: -48px -48px;
}
.bb {
  background-position: -72px -48px;
}
.bd {
  background-position: -96px -48px;
}
.be {
  background-position: -120px -48px;
}
.bf {
  background-position: -144px -48px;
}
.bg {
  background-position: -168px -48px;
}
.bh {
  background-position: -192px -48px;
}
.bi {
  background-position: -216px -48px;
}
.bj {
  background-position: -240px -48px;
}
.bl {
  background-position: -264px -48px;
}
.bm {
  background-position: -288px -48px;
}
.bn {
  background-position: -312px -48px;
}
.bo {
  background-position: -336px -48px;
}
.br {
  background-position: -360px -48px;
}
.bs {
  background-position: -384px -48px;
}
.bt {
  background-position: 0px -72px;
}
.bw {
  background-position: -24px -72px;
}
.by {
  background-position: -48px -72px;
}
.bz {
  background-position: -72px -72px;
}
.ca {
  background-position: -96px -72px;
}
.cc {
  background-position: -120px -72px;
}
.cd {
  background-position: -144px -72px;
}
.cf {
  background-position: -168px -72px;
}
.cg {
  background-position: -192px -72px;
}
.ch {
  background-position: -216px -72px;
}
.ci {
  background-position: -240px -72px;
}
.ck {
  background-position: -264px -72px;
}
.cl {
  background-position: -288px -72px;
}
.cm {
  background-position: -312px -72px;
}
.cn {
  background-position: -336px -72px;
}
.co {
  background-position: -360px -72px;
}
.cr {
  background-position: -384px -72px;
}
.cu {
  background-position: 0px -96px;
}
.cv {
  background-position: -24px -96px;
}
.cw {
  background-position: -48px -96px;
}
.cx {
  background-position: -72px -96px;
}
.cy {
  background-position: -96px -96px;
}
.cz {
  background-position: -120px -96px;
}
.de {
  background-position: -144px -96px;
}
.dj {
  background-position: -168px -96px;
}
.dk {
  background-position: -192px -96px;
}
.dm {
  background-position: -216px -96px;
}
.do {
  background-position: -240px -96px;
}
.dz {
  background-position: -264px -96px;
}
.ec {
  background-position: -288px -96px;
}
.ee {
  background-position: -312px -96px;
}
.eg {
  background-position: -336px -96px;
}
.eh {
  background-position: -360px -96px;
}
.er {
  background-position: -384px -96px;
}
.es {
  background-position: 0px -120px;
}
.et {
  background-position: -24px -120px;
}
.eu {
  background-position: -48px -120px;
}
.fi {
  background-position: -72px -120px;
}
.fj {
  background-position: -96px -120px;
}
.fk {
  background-position: -120px -120px;
}
.fm {
  background-position: -144px -120px;
}
.fo {
  background-position: -168px -120px;
}
.fr {
  background-position: -192px -120px;
}
.ga {
  background-position: -216px -120px;
}
.gb {
  background-position: -240px -120px;
}
.gd {
  background-position: -264px -120px;
}
.ge {
  background-position: -288px -120px;
}
.gg {
  background-position: -312px -120px;
}
.gh {
  background-position: -336px -120px;
}
.gi {
  background-position: -360px -120px;
}
.gl {
  background-position: -384px -120px;
}
.gm {
  background-position: 0px -144px;
}
.gn {
  background-position: -24px -144px;
}
.gq {
  background-position: -48px -144px;
}
.gr {
  background-position: -72px -144px;
}
.gs {
  background-position: -96px -144px;
}
.gt {
  background-position: -120px -144px;
}
.gu {
  background-position: -144px -144px;
}
.gw {
  background-position: -168px -144px;
}
.gy {
  background-position: -192px -144px;
}
.hk {
  background-position: -216px -144px;
}
.hn {
  background-position: -240px -144px;
}
.hr {
  background-position: -264px -144px;
}
.ht {
  background-position: -288px -144px;
}
.hu {
  background-position: -312px -144px;
}
.ic {
  background-position: -336px -144px;
}
.id {
  background-position: -360px -144px;
}
.ie {
  background-position: -384px -144px;
}
.il {
  background-position: 0px -168px;
}
.im {
  background-position: -24px -168px;
}
.in {
  background-position: -48px -168px;
}
.iq {
  background-position: -72px -168px;
}
.ir {
  background-position: -96px -168px;
}
.is {
  background-position: -120px -168px;
}
.it {
  background-position: -144px -168px;
}
.je {
  background-position: -168px -168px;
}
.jm {
  background-position: -192px -168px;
}
.jo {
  background-position: -216px -168px;
}
.jp {
  background-position: -240px -168px;
}
.ke {
  background-position: -264px -168px;
}
.kg {
  background-position: -288px -168px;
}
.kh {
  background-position: -312px -168px;
}
.ki {
  background-position: -336px -168px;
}
.km {
  background-position: -360px -168px;
}
.kn {
  background-position: -384px -168px;
}
.kp {
  background-position: 0px -192px;
}
.kr {
  background-position: -24px -192px;
}
.kw {
  background-position: -48px -192px;
}
.ky {
  background-position: -72px -192px;
}
.kz {
  background-position: -96px -192px;
}
.la {
  background-position: -120px -192px;
}
.lb {
  background-position: -144px -192px;
}
.lc {
  background-position: -168px -192px;
}
.li {
  background-position: -192px -192px;
}
.lk {
  background-position: -216px -192px;
}
.lr {
  background-position: -240px -192px;
}
.ls {
  background-position: -264px -192px;
}
.lt {
  background-position: -288px -192px;
}
.lu {
  background-position: -312px -192px;
}
.lv {
  background-position: -336px -192px;
}
.ly {
  background-position: -360px -192px;
}
.ma {
  background-position: -384px -192px;
}
.mc {
  background-position: 0px -216px;
}
.md {
  background-position: -24px -216px;
}
.me {
  background-position: -48px -216px;
}
.mf {
  background-position: -72px -216px;
}
.mg {
  background-position: -96px -216px;
}
.mh {
  background-position: -120px -216px;
}
.mk {
  background-position: -144px -216px;
}
.ml {
  background-position: -168px -216px;
}
.mm {
  background-position: -192px -216px;
}
.mn {
  background-position: -216px -216px;
}
.mo {
  background-position: -240px -216px;
}
.mp {
  background-position: -264px -216px;
}
.mq {
  background-position: -288px -216px;
}
.mr {
  background-position: -312px -216px;
}
.ms {
  background-position: -336px -216px;
}
.mt {
  background-position: -360px -216px;
}
.mu {
  background-position: -384px -216px;
}
.mv {
  background-position: 0px -240px;
}
.mw {
  background-position: -24px -240px;
}
.mx {
  background-position: -48px -240px;
}
.my {
  background-position: -72px -240px;
}
.mz {
  background-position: -96px -240px;
}
.na {
  background-position: -120px -240px;
}
.nc {
  background-position: -144px -240px;
}
.ne {
  background-position: -168px -240px;
}
.nf {
  background-position: -192px -240px;
}
.ng {
  background-position: -216px -240px;
}
.ni {
  background-position: -240px -240px;
}
.nl {
  background-position: -264px -240px;
}
.no {
  background-position: -288px -240px;
}
.np {
  background-position: -312px -240px;
}
.nr {
  background-position: -336px -240px;
}
.nu {
  background-position: -360px -240px;
}
.nz {
  background-position: -384px -240px;
}
.om {
  background-position: 0px -264px;
}
.pa {
  background-position: -24px -264px;
}
.pe {
  background-position: -48px -264px;
}
.pf {
  background-position: -72px -264px;
}
.pg {
  background-position: -96px -264px;
}
.ph {
  background-position: -120px -264px;
}
.pk {
  background-position: -192px -264px;
}
.pl {
  background-position: -216px -264px;
}
.pn {
  background-position: -240px -264px;
}
.pr {
  background-position: -264px -264px;
}
.ps {
  background-position: -288px -264px;
}
.pt {
  background-position: -312px -264px;
}
.pw {
  background-position: -336px -264px;
}
.py {
  background-position: -360px -264px;
}
.qa {
  background-position: -384px -264px;
}
.ro {
  background-position: 0px -288px;
}
.rs {
  background-position: -24px -288px;
}
.ru {
  background-position: -48px -288px;
}
.rw {
  background-position: -72px -288px;
}
.sa {
  background-position: -96px -288px;
}
.sb {
  background-position: -120px -288px;
}
.sc {
  background-position: -144px -288px;
}
.sd {
  background-position: -168px -288px;
}
.se {
  background-position: -192px -288px;
}
.sg {
  background-position: -216px -288px;
}
.sh {
  background-position: -240px -288px;
}
.si {
  background-position: -264px -288px;
}
.sk {
  background-position: -288px -288px;
}
.sl {
  background-position: -312px -288px;
}
.sm {
  background-position: -336px -288px;
}
.sn {
  background-position: -360px -288px;
}
.so {
  background-position: -384px -288px;
}
.sr {
  background-position: 0px -312px;
}
.ss {
  background-position: -24px -312px;
}
.st {
  background-position: -48px -312px;
}
.sv {
  background-position: -72px -312px;
}
.sy {
  background-position: -96px -312px;
}
.sz {
  background-position: -120px -312px;
}
.tc {
  background-position: -144px -312px;
}
.td {
  background-position: -168px -312px;
}
.tf {
  background-position: -192px -312px;
}
.tg {
  background-position: -216px -312px;
}
.th {
  background-position: -240px -312px;
}
.tj {
  background-position: -264px -312px;
}
.tk {
  background-position: -288px -312px;
}
.tl {
  background-position: -312px -312px;
}
.tm {
  background-position: -336px -312px;
}
.tn {
  background-position: -360px -312px;
}
.to {
  background-position: -384px -312px;
}
.tr {
  background-position: 0px -336px;
}
.tt {
  background-position: -24px -336px;
}
.tv {
  background-position: -48px -336px;
}
.tw {
  background-position: -72px -336px;
}
.tz {
  background-position: -96px -336px;
}
.ua {
  background-position: -120px -336px;
}
.ug {
  background-position: -144px -336px;
}
.us {
  background-position: -168px -336px;
}
.uy {
  background-position: -192px -336px;
}
.uz {
  background-position: -216px -336px;
}
.va {
  background-position: -240px -336px;
}
.vc {
  background-position: -264px -336px;
}
.ve {
  background-position: -288px -336px;
}
.vg {
  background-position: -312px -336px;
}
.vi {
  background-position: -336px -336px;
}
.vn {
  background-position: -360px -336px;
}
.vu {
  background-position: -384px -336px;
}
.wf {
  background-position: 0px -360px;
}
.ws {
  background-position: -24px -360px;
}
.ye {
  background-position: -48px -360px;
}
.za {
  background-position: -96px -360px;
}
.zm {
  background-position: -120px -360px;
}
.zw {
  background-position: -144px -360px;
}
* {
  box-sizing: border-box;
  -moz-box-sizing: border-box;
}
.hide {
  display: none;
}
.v-hide {
  visibility: hidden;
}

Step 4: Import and Use the Component

In your src directory, open the App.js file and replace its contents with the following code:

import React, { useState } from "react";
import "./styles.css";
import ReactFlagsSelect from "react-flags-select";
import "./flags.css";

export default function App() {
  const [select, setSelect] = useState("NG");
  const onSelect = (code) => setSelect(code);
  console.log("SELECT", select);
  return (
    <div className="App">


      <ReactFlagsSelect
        selected={select}
        onSelect={onSelect}
        countries={["AD", "AE", "AF", "AG", "AI", "AL", "AM", "AO", "AQ", "AR",
        "AS", "AT", "AU", "AW", "AX", "AZ", "BA", "BB", "BD", "BE",
        "BF", "BG", "BH", "BI", "BJ", "BL", "BM", "BN", "BO", "BQ",
        "BR", "BS", "BT", "BV", "BW", "BY", "BZ", "CA", "CC", "CD",
        "CF", "CG", "CH", "CI", "CK", "CL", "CM", "CN", "CO", "CR",
        "CU", "CV", "CW", "CX", "CY", "CZ", "DE", "DJ", "DK", "DM",
        "DO", "DZ", "EC", "EE", "EG", "EH", "ER", "ES", "ET", "FI",
        "FJ", "FK", "FM", "FO", "FR", "GA", "GB", "GD", "GE", "GF",
        "GG", "GH", "GI", "GL", "GM", "GN", "GP", "GQ", "GR", "GS",
        "GT", "GU", "GW", "GY", "HK", "HM", "HN", "HR", "HT", "HU",
        "ID", "IE", "IL", "IM", "IN", "IO", "IQ", "IR", "IS", "IT",
        "JE", "JM", "JO", "JP", "KE", "KG", "KH", "KI", "KM", "KN",
        "KP", "KR", "KW", "KY", "KZ", "LA", "LB", "LC", "LI", "LK",
        "LR", "LS", "LT", "LU", "LV", "LY", "MA", "MC", "MD", "ME",
        "MF", "MG", "MH", "MK", "ML", "MM", "MN", "MO", "MP", "MQ",
        "MR", "MS", "MT", "MU", "MV", "MW", "MX", "MY", "MZ", "NA",
        "NC", "NE", "NF", "NG", "NI", "NL", "NO", "NP", "NR", "NU",
        "NZ", "OM", "PA", "PE", "PF", "PG", "PH", "PK", "PL", "PM",
        "PN", "PR", "PS", "PT", "PW", "PY", "QA", "RE", "RO", "RS",
        "RU", "RW", "SA", "SB", "SC", "SD", "SE", "SG", "SH", "SI",
        "SJ", "SK", "SL", "SM", "SN", "SO", "SR", "SS", "ST", "SV",
        "SX", "SY", "SZ", "TC", "TD", "TF", "TG", "TH", "TJ", "TK",
        "TL", "TM", "TN", "TO", "TR", "TT", "TV", "TW", "TZ", "UA",
        "UG", "UM", "US", "UY", "UZ", "VA", "VC", "VE", "VG", "VI",
        "VN", "VU", "WF", "WS", "YE", "YT", "ZA", "ZM", "ZW"]}
        // showSelectedLabel={showSelectedLabel}
        // selectedSize={selectedSize}
        // showOptionLabel={showOptionLabel}
        // optionsSize={optionsSize}
        // placeholder={placeholder}
        // searchable={searchable}
        // searchPlaceholder={searchPlaceholder}
        // alignOptionsToRight={alignOptionsToRight}
        // fullWidth={fullWidth}
        // disabled={disabled} 

      />
      <br />


    </div>
  );
}

Step 5: Start the Application

Run the development server to see your country flag selector in action:

npm start

Your React application should now be accessible at http://localhost:3000. You'll see the country flag selector along with the flags dropdown.

Conclusion

Congratulations! You've successfully created a country flag selector in React using the react-flags-select package. Users can now choose a country by selecting its flag from the dropdown list. Feel free to further customize the styling and functionality to fit your application's needs.

Remember that the provided code snippets are just a starting point, and you can extend and modify them as desired to create more complex and feature-rich components.