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How Do I Use External Script That I Add To React Js

Adding an external script to a React.js project is a great way to enhance its functionality by integrating additional features or libraries. By following a few simple steps, you can easily incorporate external scripts into your React application. In this guide, we will walk you through the process of adding and utilizing an external script in your React.js project.

**Step 1: Adding the External Script**

The first step is to add the external script to your project. You can do this by including the script tag in the index.html file of your React application. Locate the public folder in your project directory and find the index.html file. Within the head tag of the index.html file, add the script tag with the src attribute pointing to the URL of the external script like this:

Html

...
   
   ...

Make sure to replace `"https://example.com/external-script.js"` with the actual URL of the external script you want to add.

**Step 2: Using the External Script in Your React Components**

Once you have added the external script to your project, you can start using its functionality in your React components. Import the script at the top of the file where you want to use it. You can use the `useEffect` hook to ensure the script is loaded before interacting with it. Here's an example of how you can import and use the external script in a React component:

Javascript

import { useEffect } from 'react';

const MyComponent = () => {
    useEffect(() => {
        const script = document.createElement('script');
        script.src = "https://example.com/external-script.js";
        script.async = true;
        document.body.appendChild(script);

        return () => {
            document.body.removeChild(script);
        };
    }, []);

    // Your component logic here

    return (
        <div>
            {/* Your JSX content */}
        </div>
    );
};

export default MyComponent;

In this code snippet, we use the `useEffect` hook to create a script element, set its source to the URL of the external script, and append it to the document's body. By adding the script in this way, you ensure that it is loaded and available for use in your component.

**Step 3: Interacting with the External Script**

Once the external script is added and loaded in your React component, you can interact with its functions, APIs, or libraries as needed. You can call functions from the external script directly within your component functions.

Javascript

const MyComponent = () =&gt; {
    useEffect(() =&gt; {
        externalScriptFunction(); // Call a function from the external script
    }, []);

    // Your component logic here

    return (
        <div>
            {/* Your JSX content */}
        </div>
    );
};

By following these steps, you can successfully add an external script to your React.js project and utilize its functionality within your components. Experiment with different external scripts to enhance the capabilities of your React application and create more dynamic and interactive projects.

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