{"id":110884,"date":"2025-04-18T06:05:37","date_gmt":"2025-04-18T06:05:37","guid":{"rendered":"https:\/\/ushopwell.com\/ublog\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\/"},"modified":"2025-04-18T06:05:37","modified_gmt":"2025-04-18T06:05:37","slug":"reactjs-tutorial-3-how-react-app-works-in-simplest-way","status":"publish","type":"post","link":"https:\/\/ushopwell.com\/ublog\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\/","title":{"rendered":"ReactJS Tutorial 3 : How React App Works in Simplest way"},"content":{"rendered":"<div class=\"youtubomatic-video-container\"><iframe loading=\"lazy\" width=\"580\" height=\"380\" src=\"https:\/\/www.youtube.com\/embed\/uN_nKJ3QCq4?autoplay=1&#038;controls=1&#038;hl=en\" frameborder=\"0\" allowfullscreen><\/iframe><\/div>\n<p>Let\u2019s now understand how our react project is laid out and how it works.<\/p>\n<p>As earlier mentioned, a react app does not contain multiple webpages but a single webpage.<\/p>\n<p>We can find this single webpage in our app called as index.html<\/p>\n<p>Usually the index.html is the main homepage of any website or a web application.<\/p>\n<p>But if you take a look at the index.html page, right now in the body of that page we only have one div and a script tag and you do not have anything else.<\/p>\n<p>But if you take a look at the page rendered on the browser, it contains elements.<\/p>\n<p>If you are familiar with HTML you will understand that to create this, HTML page you need to add a lot of HTML tags but there are only two tags present in the HTML body of index.html.<\/p>\n<p>This is because React works in a different way, we do not write or create HTML elements but React does that for us.<\/p>\n<p>How does React do it ?<\/p>\n<p>If you take a look at the body tag, we have a div with an id root.<\/p>\n<p>What React does is that it selects this root and renders HTML elements into it.<\/p>\n<p>You will also notice that there is a JS script tag as well which points to src\/main, hence let\u2019s now go to that folder.<\/p>\n<p>In main.jsx you will find that we have selected that root div element, and inside of it we are rendering a React component called App.<\/p>\n<p>Now let\u2019s learn the significance of rest of the files:<\/p>\n<p>Node modules: Contains all the node packages to run your application.<\/p>\n<p>Public folder: Could store any assets like images<\/p>\n<p>Assets: Could store images<\/p>\n<p>package-json: Contains the scripts required to run your apps as well as dependencies.<\/p>\n<p>Show the npm start script and the React version.<\/p>\n<p>In the next lecture, let\u2019s learn what is a component and how to create our first component in React.<\/p>\n<p>This app component is already present in the App.jsx file.<br \/>\nHow does a React application work and how project structure of a React app works.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Let\u2019s now understand how our react project is laid out and how it works. As earlier mentioned, a react app does not contain multiple webpages but a single webpage. We can find this single webpage in our app called as index.html Usually the index.html is the main homepage of any website or a web application. But if you take a look at the index.html page, right now in the body&#8230;<\/p>\n","protected":false},"author":1,"featured_media":110885,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","tve_updated_post":"","tve_custom_css":"","tve_user_custom_css":"","tve_globals":{},"tcb2_ready":0,"tcb_editor_enabled":0,"tve_landing_page":"","_tve_header":"","_tve_footer":""},"categories":[1],"tags":[],"class_list":["post-110884","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ReactJS Tutorial 3 : How React App Works in Simplest way - UshopWell.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ushopwell.com\/ublog\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ReactJS Tutorial 3 : How React App Works in Simplest way - UshopWell.com\" \/>\n<meta property=\"og:description\" content=\"Let\u2019s now understand how our react project is laid out and how it works. As earlier mentioned, a react app does not contain multiple webpages but a single webpage. We can find this single webpage in our app called as index.html Usually the index.html is the main homepage of any website or a web application. But if you take a look at the index.html page, right now in the body...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ushopwell.com\/ublog\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\/\" \/>\n<meta property=\"og:site_name\" content=\"UshopWell.com\" \/>\n<meta property=\"article:published_time\" content=\"2025-04-18T06:05:37+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ushopwell.com\/ublog\/wp-content\/uploads\/2025\/04\/110884\/reactjs-tutorial-3-how-react-app-works-in-simplest-way.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"480\" \/>\n\t<meta property=\"og:image:height\" content=\"360\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"UShopWell\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"UShopWell\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\\\/\"},\"author\":{\"name\":\"UShopWell\",\"@id\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/#\\\/schema\\\/person\\\/6fd1f9e0ff932e534c86c70d5acff0fc\"},\"headline\":\"ReactJS Tutorial 3 : How React App Works in Simplest way\",\"datePublished\":\"2025-04-18T06:05:37+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\\\/\"},\"wordCount\":370,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/wp-content\\\/uploads\\\/2025\\\/04\\\/110884\\\/reactjs-tutorial-3-how-react-app-works-in-simplest-way.jpg\",\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\\\/\",\"url\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\\\/\",\"name\":\"ReactJS Tutorial 3 : How React App Works in Simplest way - UshopWell.com\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/wp-content\\\/uploads\\\/2025\\\/04\\\/110884\\\/reactjs-tutorial-3-how-react-app-works-in-simplest-way.jpg\",\"datePublished\":\"2025-04-18T06:05:37+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\\\/#primaryimage\",\"url\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/wp-content\\\/uploads\\\/2025\\\/04\\\/110884\\\/reactjs-tutorial-3-how-react-app-works-in-simplest-way.jpg\",\"contentUrl\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/wp-content\\\/uploads\\\/2025\\\/04\\\/110884\\\/reactjs-tutorial-3-how-react-app-works-in-simplest-way.jpg\",\"width\":480,\"height\":360,\"caption\":\"ReactJS Tutorial 3 : How React App Works in Simplest way\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"ReactJS Tutorial 3 : How React App Works in Simplest way\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/#website\",\"url\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/\",\"name\":\"UshopWell.com\",\"description\":\"The Premiere Online Marketplace\",\"publisher\":{\"@id\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/#organization\",\"name\":\"UshopWell\",\"url\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/wp-content\\\/uploads\\\/2018\\\/01\\\/pandaSwea.png\",\"contentUrl\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/wp-content\\\/uploads\\\/2018\\\/01\\\/pandaSwea.png\",\"width\":365,\"height\":359,\"caption\":\"UshopWell\"},\"image\":{\"@id\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/#\\\/schema\\\/person\\\/6fd1f9e0ff932e534c86c70d5acff0fc\",\"name\":\"UShopWell\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/4adb372cadd43b4d4c57964dab95b0f69618bf960d131c4acf49d96d6bbc9c6e?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/4adb372cadd43b4d4c57964dab95b0f69618bf960d131c4acf49d96d6bbc9c6e?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/4adb372cadd43b4d4c57964dab95b0f69618bf960d131c4acf49d96d6bbc9c6e?s=96&d=mm&r=g\",\"caption\":\"UShopWell\"},\"url\":\"https:\\\/\\\/ushopwell.com\\\/ublog\\\/author\\\/kburnettu\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"ReactJS Tutorial 3 : How React App Works in Simplest way - UshopWell.com","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/ushopwell.com\/ublog\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\/","og_locale":"en_US","og_type":"article","og_title":"ReactJS Tutorial 3 : How React App Works in Simplest way - UshopWell.com","og_description":"Let\u2019s now understand how our react project is laid out and how it works. As earlier mentioned, a react app does not contain multiple webpages but a single webpage. We can find this single webpage in our app called as index.html Usually the index.html is the main homepage of any website or a web application. But if you take a look at the index.html page, right now in the body...","og_url":"https:\/\/ushopwell.com\/ublog\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\/","og_site_name":"UshopWell.com","article_published_time":"2025-04-18T06:05:37+00:00","og_image":[{"width":480,"height":360,"url":"https:\/\/ushopwell.com\/ublog\/wp-content\/uploads\/2025\/04\/110884\/reactjs-tutorial-3-how-react-app-works-in-simplest-way.jpg","type":"image\/jpeg"}],"author":"UShopWell","twitter_card":"summary_large_image","twitter_misc":{"Written by":"UShopWell","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/ushopwell.com\/ublog\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\/#article","isPartOf":{"@id":"https:\/\/ushopwell.com\/ublog\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\/"},"author":{"name":"UShopWell","@id":"https:\/\/ushopwell.com\/ublog\/#\/schema\/person\/6fd1f9e0ff932e534c86c70d5acff0fc"},"headline":"ReactJS Tutorial 3 : How React App Works in Simplest way","datePublished":"2025-04-18T06:05:37+00:00","mainEntityOfPage":{"@id":"https:\/\/ushopwell.com\/ublog\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\/"},"wordCount":370,"commentCount":0,"publisher":{"@id":"https:\/\/ushopwell.com\/ublog\/#organization"},"image":{"@id":"https:\/\/ushopwell.com\/ublog\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\/#primaryimage"},"thumbnailUrl":"https:\/\/ushopwell.com\/ublog\/wp-content\/uploads\/2025\/04\/110884\/reactjs-tutorial-3-how-react-app-works-in-simplest-way.jpg","inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/ushopwell.com\/ublog\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/ushopwell.com\/ublog\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\/","url":"https:\/\/ushopwell.com\/ublog\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\/","name":"ReactJS Tutorial 3 : How React App Works in Simplest way - UshopWell.com","isPartOf":{"@id":"https:\/\/ushopwell.com\/ublog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/ushopwell.com\/ublog\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\/#primaryimage"},"image":{"@id":"https:\/\/ushopwell.com\/ublog\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\/#primaryimage"},"thumbnailUrl":"https:\/\/ushopwell.com\/ublog\/wp-content\/uploads\/2025\/04\/110884\/reactjs-tutorial-3-how-react-app-works-in-simplest-way.jpg","datePublished":"2025-04-18T06:05:37+00:00","breadcrumb":{"@id":"https:\/\/ushopwell.com\/ublog\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/ushopwell.com\/ublog\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/ushopwell.com\/ublog\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\/#primaryimage","url":"https:\/\/ushopwell.com\/ublog\/wp-content\/uploads\/2025\/04\/110884\/reactjs-tutorial-3-how-react-app-works-in-simplest-way.jpg","contentUrl":"https:\/\/ushopwell.com\/ublog\/wp-content\/uploads\/2025\/04\/110884\/reactjs-tutorial-3-how-react-app-works-in-simplest-way.jpg","width":480,"height":360,"caption":"ReactJS Tutorial 3 : How React App Works in Simplest way"},{"@type":"BreadcrumbList","@id":"https:\/\/ushopwell.com\/ublog\/reactjs-tutorial-3-how-react-app-works-in-simplest-way\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/ushopwell.com\/ublog\/"},{"@type":"ListItem","position":2,"name":"ReactJS Tutorial 3 : How React App Works in Simplest way"}]},{"@type":"WebSite","@id":"https:\/\/ushopwell.com\/ublog\/#website","url":"https:\/\/ushopwell.com\/ublog\/","name":"UshopWell.com","description":"The Premiere Online Marketplace","publisher":{"@id":"https:\/\/ushopwell.com\/ublog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/ushopwell.com\/ublog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/ushopwell.com\/ublog\/#organization","name":"UshopWell","url":"https:\/\/ushopwell.com\/ublog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/ushopwell.com\/ublog\/#\/schema\/logo\/image\/","url":"https:\/\/ushopwell.com\/ublog\/wp-content\/uploads\/2018\/01\/pandaSwea.png","contentUrl":"https:\/\/ushopwell.com\/ublog\/wp-content\/uploads\/2018\/01\/pandaSwea.png","width":365,"height":359,"caption":"UshopWell"},"image":{"@id":"https:\/\/ushopwell.com\/ublog\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/ushopwell.com\/ublog\/#\/schema\/person\/6fd1f9e0ff932e534c86c70d5acff0fc","name":"UShopWell","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/4adb372cadd43b4d4c57964dab95b0f69618bf960d131c4acf49d96d6bbc9c6e?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/4adb372cadd43b4d4c57964dab95b0f69618bf960d131c4acf49d96d6bbc9c6e?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/4adb372cadd43b4d4c57964dab95b0f69618bf960d131c4acf49d96d6bbc9c6e?s=96&d=mm&r=g","caption":"UShopWell"},"url":"https:\/\/ushopwell.com\/ublog\/author\/kburnettu\/"}]}},"_links":{"self":[{"href":"https:\/\/ushopwell.com\/ublog\/wp-json\/wp\/v2\/posts\/110884","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ushopwell.com\/ublog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ushopwell.com\/ublog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ushopwell.com\/ublog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ushopwell.com\/ublog\/wp-json\/wp\/v2\/comments?post=110884"}],"version-history":[{"count":0,"href":"https:\/\/ushopwell.com\/ublog\/wp-json\/wp\/v2\/posts\/110884\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ushopwell.com\/ublog\/wp-json\/wp\/v2\/media\/110885"}],"wp:attachment":[{"href":"https:\/\/ushopwell.com\/ublog\/wp-json\/wp\/v2\/media?parent=110884"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ushopwell.com\/ublog\/wp-json\/wp\/v2\/categories?post=110884"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ushopwell.com\/ublog\/wp-json\/wp\/v2\/tags?post=110884"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}