How to add external js libraries in react app?

React
1

Let’s say I have an external js file from other apps that cannot be modified. I can include that file in the index.html under script tag but I am not sure if that is the correct way. Also, how can I call any functions in that file from react components. “window.functionName” does not always seems to work.

2

One thing that might work, depending on the script, is to import it in your React component file.

import test from '../scripts/theScriptFile.js'

And then, again depending on the script, you might be able to call those functions like test.functionName() or maybe even test().

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