Incorporate React JS seamlessly into your current webpage

Question

Incorporate React JS seamlessly into your current webpage

As I delve into learning React and considering migrating existing applications to React, my goal is to incorporate a React component within an established page that already contains its own HTML and JavaScript - similar to how KnockoutJS's `applyBindings` method targets a specific DOM element:

ko.applyBindings(myViewModel, document.getElementById('someElementId'))

However, most resources on integrating React with other JavaScript suggest allowing React to control the entire page's rendering and encapsulating the existing JS within a React component. Examples include:

reddit - r/reactjs - How would you integrate react with non-react code?
React Docs - Integrating with Other Libraries

If this approach is the only one recommended, it might limit React mainly to new projects rather than facilitating the gradual transition of existing ones.

Is it possible for React to operate in such a way where it controls a specific DOM element and its children while leaving the rest of the page untouched?

If yes, what is the simplest code needed to achieve this? Many React tutorials begin with `create-react-app`, multiple React plugins, and a complex build setup. These elements can make learning React overwhelming and hinder its integration into projects with pre-existing content and toolchains.

javascript reactjs

Answer 1

Answer №1

Frontend libraries like ReactJs are designed to enable the running of multiple applications using the same or different library/framework on a webpage. To integrate ReactJs into your project, start by loading ReactJs and react DOM in your HTML through a CDN link. Then, you can render a pre-built component within a designated container.

If you're looking for a practical example, I have set up a Stackblitz JavaScript project for reference. You can access it here.

React and ReactDOM attach themselves to the window object upon script loading. It's important to note that React only controls a specified container on the page - not the entire DOM. By registering a container div with React, you enable the rendering of components within that specific area. A single page can host multiple ReactJs applications simultaneously. See the code snippet below for an example of how to render a React component within a targeted div:

// Load your component via lazy loading
import('./hello-world.js').then((comp) => {
  // Get the container where you want to render
  const reactDiv = document.getElementById('react-app');
  const reactRoot = ReactDOM.createRoot(reactDiv);
  reactRoot.render(comp.default());

  // Register another React application in a separate container
  const reactDiv2 = document.getElementById('react-app2');
  const reactRoot2 = ReactDOM.createRoot(reactDiv2);
  reactRoot2.render(comp.default());
});

I hope this explanation has addressed your question. Feel free to leave a comment if you require further assistance.

Answer 2

Frontend libraries like ReactJs are designed to enable the running of multiple applications using the same or different library/framework on a webpage. To integrate ReactJs into your project, start by loading ReactJs and react DOM in your HTML through a CDN link. Then, you can render a pre-built component within a designated container.

If you're looking for a practical example, I have set up a Stackblitz JavaScript project for reference. You can access it here.

React and ReactDOM attach themselves to the window object upon script loading. It's important to note that React only controls a specified container on the page - not the entire DOM. By registering a container div with React, you enable the rendering of components within that specific area. A single page can host multiple ReactJs applications simultaneously. See the code snippet below for an example of how to render a React component within a targeted div:

// Load your component via lazy loading
import('./hello-world.js').then((comp) => {
  // Get the container where you want to render
  const reactDiv = document.getElementById('react-app');
  const reactRoot = ReactDOM.createRoot(reactDiv);
  reactRoot.render(comp.default());

  // Register another React application in a separate container
  const reactDiv2 = document.getElementById('react-app2');
  const reactRoot2 = ReactDOM.createRoot(reactDiv2);
  reactRoot2.render(comp.default());
});

I hope this explanation has addressed your question. Feel free to leave a comment if you require further assistance.

Answer 3

Answer №2

One possible solution is to utilize single-spa. This tool allows you to develop micro-frontends in ReactJS and seamlessly integrate them into your applications.

Answer 4

One possible solution is to utilize single-spa. This tool allows you to develop micro-frontends in ReactJS and seamlessly integrate them into your applications.

Incorporate React JS seamlessly into your current webpage

Answer №1

Answer №2

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