javascript - React rendering new component

Javascript - React rendering new component

In React, if you want to conditionally render a new component based on some logic, you can use conditional rendering within your component's render method. Here's an example:

import React from 'react'; import NewComponent from './NewComponent'; // Import the new component const MyParentComponent = ({ condition }) => { return ( <div> <h1>Parent Component</h1> {condition && <NewComponent />} </div> ); }; export default MyParentComponent;

In this example:

  • MyParentComponent is the parent component.
  • NewComponent is the component you want to conditionally render.
  • The {condition && <NewComponent />} syntax is a shorthand for conditional rendering. It renders <NewComponent /> only if the condition prop is truthy.

You can use any logical expression as the condition. If the condition is true, the new component will be rendered; otherwise, it won't.

Remember to replace {condition && <NewComponent />} with your specific condition. This pattern allows you to dynamically include or exclude components based on certain conditions in your application.

Examples

  1. "React render new component conditionally"

    • Code Implementation:
      // React const ParentComponent = ({ condition }) => { return <div>{condition ? <ChildComponent /> : null}</div>; }; const ChildComponent = () => { return <p>New Component Rendered!</p>; };
    • Description: Conditionally renders the ChildComponent based on the value of the condition prop in the ParentComponent.

  2. "React dynamically render components"

    • Code Implementation:
      // React const DynamicComponentRenderer = ({ componentType }) => { const ComponentToRender = componentType === 'A' ? ComponentA : ComponentB; return <ComponentToRender />; }; const ComponentA = () => { return <p>Component A Rendered!</p>; }; const ComponentB = () => { return <p>Component B Rendered!</p>; };
    • Description: Dynamically selects and renders a component (ComponentA or ComponentB) based on the value of the componentType prop.

  3. "React render new component on button click"

    • Code Implementation:
      // React const ComponentWithButton = () => { const [renderNewComponent, setRenderNewComponent] = useState(false); const handleButtonClick = () => { setRenderNewComponent(true); }; return ( <div> <button onClick={handleButtonClick}>Render New Component</button> {renderNewComponent && <NewComponent />} </div> ); }; const NewComponent = () => { return <p>New Component Rendered!</p>; };
    • Description: Renders a new component (NewComponent) when a button is clicked in the ComponentWithButton.

  4. "React render new component with props"

    • Code Implementation:
      // React const ParentComponent = () => { return <ChildComponent message="Hello from Parent!" />; }; const ChildComponent = ({ message }) => { return <p>{message}</p>; };
    • Description: Renders the ChildComponent with a prop (message) passed from the ParentComponent.

  5. "React render new component based on state"

    • Code Implementation:
      // React const ParentComponent = () => { const [showNewComponent, setShowNewComponent] = useState(true); return <div>{showNewComponent ? <NewComponent /> : null}</div>; }; const NewComponent = () => { return <p>New Component Rendered!</p>; };
    • Description: Renders the NewComponent based on the state (showNewComponent) in the ParentComponent.

  6. "React render multiple components dynamically"

    • Code Implementation:
      // React const DynamicComponentRenderer = ({ componentTypes }) => { return ( <div> {componentTypes.map((type, index) => ( <DynamicComponent key={index} type={type} /> ))} </div> ); }; const DynamicComponent = ({ type }) => { return <p>{`Component of type ${type} Rendered!`}</p>; };
    • Description: Dynamically renders multiple components based on an array of componentTypes in the DynamicComponentRenderer.

  7. "React render new component on route change"

    • Code Implementation:
      // React Router import { Route, Switch } from 'react-router-dom'; const App = () => { return ( <Switch> <Route path="/page1" component={Page1Component} /> <Route path="/page2" component={Page2Component} /> </Switch> ); }; const Page1Component = () => { return <p>Page 1 Component Rendered!</p>; }; const Page2Component = () => { return <p>Page 2 Component Rendered!</p>; };
    • Description: Renders different components based on the route using React Router (Page1Component for "/page1" and Page2Component for "/page2").

  8. "React render new component with dynamic content"

    • Code Implementation:
      // React const DynamicContentComponent = ({ contentType }) => { const ContentComponent = contentComponents[contentType] || DefaultContentComponent; return <ContentComponent />; }; const TextContentComponent = () => { return <p>Text Content Rendered!</p>; }; const ImageContentComponent = () => { return <img src="image.jpg" alt="Image Content" />; }; const DefaultContentComponent = () => { return <p>Default Content Rendered!</p>; }; const contentComponents = { text: TextContentComponent, image: ImageContentComponent, };
    • Description: Renders different content components dynamically based on the contentType prop with a fallback to DefaultContentComponent.

  9. "React render new component on state change"

    • Code Implementation:
      // React const StateChangeComponent = () => { const [showNewComponent, setShowNewComponent] = useState(false); useEffect(() => { setShowNewComponent(true); }, []); return <div>{showNewComponent && <NewComponent />}</div>; }; const NewComponent = () => { return <p>New Component Rendered!</p>; };
    • Description: Renders the NewComponent when the component mounts by changing the state (showNewComponent) in the StateChangeComponent.

  10. "React render new component with context"

    • Code Implementation:
      // React const App = () => { return ( <MyContextProvider> <ComponentWithContext /> </MyContextProvider> ); }; const MyContext = React.createContext(); const MyContextProvider = ({ children }) => { const value = 'Context Value'; return <MyContext.Provider value={value}>{children}</MyContext.Provider>; }; const ComponentWithContext = () => { const contextValue = useContext(MyContext); return <p>{`Component with Context: ${contextValue}`}</p>; };
    • Description: Renders a component (ComponentWithContext) with content provided by a context (MyContext) using the useContext hook.

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