<span class="x1lliihq x1plvlek xryxfnj x1n2onr6 x193iq5w xeuugli x1fj9vlw x13faqbe x1vvkbs x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x x1i0vuye xvs91rp xo1l8bm x9bdzbf x10wh9bi x1wdrske x8viiok x18hxmgj" dir="auto" style="line-height: var(--base-line-clamp-line-height); --base-line-clamp-line-height: 18px;">React JS Roadmap:<br><br>1. Prerequisites:<br><br>- JavaScript Fundamentals:<br> - Variables, Constants, and Data Types<br> - Functions and Scoping<br> - Loops and Iteration<br> - Events<br> - Array Methods<br> - ES6+ Features (Arrow Functions, Promises, Async/Await, Destructuring, Spread/Rest Operator)<br>- HTML &amp; CSS Fundamentals:<br> - Basic Tag Structure<br> - Styling (Classes, IDs)<br> - Flexbox &amp; Grid<br> - Media Queries<br><br>2. React Basics:<br><br>- Introduction to React:<br> - What is React?<br> - Why React?<br> - Virtual DOM<br>- Setting up Environment:<br> - Node &amp; NPM<br> - Create React App<br>- JSX:<br> - JSX Syntax<br> - Expressions in JSX<br> - Rendering Elements<br>- Components &amp; Props:<br> - Functional Components<br> - Class Components<br> - Props<br>- State &amp; Lifecycle:<br> - State in Class &amp; Functional Components<br> - useEffect Hook<br> - Lifecycle Methods in Class Components<br><br>3. Advanced React:<br><br>- Hooks:<br> - useState<br> - useEffect<br> - useContext<br> - useReducer<br> - useRef<br> - useMemo<br> - useCallback<br> - Custom Hooks<br>- Context API:<br> - Creating Context<br> - Consuming Context<br> - Updating Context<br>- Routing:<br> - React Router Setup<br> - Route, Switch, Link, NavLink<br> - Route Parameters<br> - Nested Routing<br>- Higher Order Components (HOC)<br>- Render Props<br><br>4. Styling in React:<br><br>- CSS-in-JS Libraries:<br> - Styled-components<br> - Emotion<br>- CSS Frameworks:<br> - Bootstrap with React<br> - Material-UI<br> - Ant Design<br><br>5. State Management:<br><br>- Redux:<br> - Store, Actions, Reducers<br> - Middleware (thunk, saga)<br> - React-Redux Hooks (useDispatch, useSelector)<br>- MobX<br>- Local State Management Patterns (Lifting State Up, Container Components)<br><br>6. Testing:<br><br>- Jest:<br> - Writing Tests<br> - Running Tests<br>- React Testing Library<br>- Enzyme<br><br>7. Optimization:<br><br>- Performance:<br> - Virtualized Lists (e.g., react-window)<br> - useMemo, useCallback<br> - React.lazy and Suspense<br>- Code Splitting<br><br>8. Server-Side Rendering:<br><br>- Next.js<br><br>9. Miscellaneous:<br><br>- GraphQL with React (using libraries like Apollo)<br>- TypeScript with React<br>- Animations (e.g., Framer Motion)<br>- Internationalization (i18n) &amp; Localization<br><br><a class="x1i10hfl xjbqb8w x6umtig x1b1mbwd xaqea5y xav7gou x9f619 x1ypdohk xt0psk2 xe8uvvx xdj266r x11i5rnm xat24cr x1mh8g0r xexx8yu x4uap5 x18d9i69 xkhd6sd x16tdsg8 x1hl2dhg xggy1nq x1a2a7pz x1g9anri xvs91rp x1s688f x1vlc3oy  _aa9_ _a6hd" href="/explore/tags/reactjs/" role="link" tabindex="0">#reactjs</a> <a class="x1i10hfl xjbqb8w x6umtig x1b1mbwd xaqea5y xav7gou x9f619 x1ypdohk xt0psk2 xe8uvvx xdj266r x11i5rnm xat24cr x1mh8g0r xexx8yu x4uap5 x18d9i69 xkhd6sd x16tdsg8 x1hl2dhg xggy1nq x1a2a7pz x1g9anri xvs91rp x1s688f x1vlc3oy  _aa9_ _a6hd" href="/explore/tags/js/" role="link" tabindex="0">#js</a> <a class="x1i10hfl xjbqb8w x6umtig x1b1mbwd xaqea5y xav7gou x9f619 x1ypdohk xt0psk2 xe8uvvx xdj266r x11i5rnm xat24cr x1mh8g0r xexx8yu x4uap5 x18d9i69 xkhd6sd x16tdsg8 x1hl2dhg xggy1nq x1a2a7pz x1g9anri xvs91rp x1s688f x1vlc3oy  _aa9_ _a6hd" href="/explore/tags/javascript/" role="link" tabindex="0">#javascript</a> <a class="x1i10hfl xjbqb8w x6umtig x1b1mbwd xaqea5y xav7gou x9f619 x1ypdohk xt0psk2 xe8uvvx xdj266r x11i5rnm xat24cr x1mh8g0r xexx8yu x4uap5 x18d9i69 xkhd6sd x16tdsg8 x1hl2dhg xggy1nq x1a2a7pz x1g9anri xvs91rp x1s688f x1vlc3oy  _aa9_ _a6hd" href="/explore/tags/python/" role="link" tabindex="0">#python</a> <a class="x1i10hfl xjbqb8w x6umtig x1b1mbwd xaqea5y xav7gou x9f619 x1ypdohk xt0psk2 xe8uvvx xdj266r x11i5rnm xat24cr x1mh8g0r xexx8yu x4uap5 x18d9i69 xkhd6sd x16tdsg8 x1hl2dhg xggy1nq x1a2a7pz x1g9anri xvs91rp x1s688f x1vlc3oy  _aa9_ _a6hd" href="/explore/tags/datascience/" role="link" tabindex="0">#datascience</a> <a class="x1i10hfl xjbqb8w x6umtig x1b1mbwd xaqea5y xav7gou x9f619 x1ypdohk xt0psk2 xe8uvvx xdj266r x11i5rnm xat24cr x1mh8g0r xexx8yu x4uap5 x18d9i69 xkhd6sd x16tdsg8 x1hl2dhg xggy1nq x1a2a7pz x1g9anri xvs91rp x1s688f x1vlc3oy  _aa9_ _a6hd" href="/explore/tags/dataanalytics/" role="link" tabindex="0">#dataanalytics</a></span>

HTML Online Editor & Compiler

Write, Run & Share HTML code online using OneCompiler's HTML online Code editor for free. It's one of the robust, feature-rich online Code editor for HTML language, running on the latest version HTML5. Getting started with the OneCompiler's HTML compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as HTML. You can also specify the stylesheet information in styles.css tab and scripts information in scripts.js tab and start coding.

About HTML

HTML(Hyper Text Markup language) is the standard markup language for Web pages, was created by Berners-Lee in the year 1991. Almost every web page over internet might be using HTML.

Syntax help

Fundamentals

  • Any HTML document must start with document declaration <!DOCTYPE html>
  • HTML documents begin with <html> and ends with </html>
  • Headings are defined with <h1> to <h6> where <h1> is the highest important heading and <h6> is the least important sub-heading.
  • Paragrahs are defined in <p>..</p> tag.
  • Links are defined in <a> tag.

    Example:

    <a href="https://onecompiler.com/html">HTML online compiler</a>
  • Images are defined in <img> tag, where src attribute consists of image name.
  • Buttons are defined in <button>..</button> tag
  • Lists are defined in <ul> for unordered/bullet list and <ol> for ordered/number list, and the list items are defined in <li>.

HTML Elements and Attributes

  • HTML element is everything present from start tag to end tag.
  • The text present between start and end tag is called HTML element content.
  • Anything can be a tagname but it's preferred to put the meaningful title to the content present as tag name.
  • Do not forget the end tag.
  • Elements with no content are called empty elements.
  • Elements can have attributes which provides additional information about the element.
  • In the below example, href is an attribute and a is the tag name.

    Example:

    <a href="https://onecompiler.com/html">HTML online compiler</a>

CSS

CSS(cascading style sheets) describes how HTML elements will look on the web page like color, font-style, font-size, background color etc.

Example:

Below is a sample style sheet which displays heading in green and in Candara font with padding space of 25px.

body{
  padding: 25px;
}
.title {
	color: #228B22;
	font-family: Candara;
}

HTML Tables

  • HTML Tables are defined in <table> tag.
  • Table row should be defined in <tr> tag
  • Table header should be defined in <th> tag
  • Table data should be defined in <td> tag
  • Table caption should be defined in <caption> tag

HTML-Javascript

  • Javascript is used in HTML pages to make them more interactive.
  • <script> is the tag used to write scripts in HTML
  • You can either reference a external script or write script code in this tag.

Example

<script src="script.js"></script>