如何在React JS中导入整个JavaScript文件

Question

I have a .js file (JavaScript file) that no exports code. It have a constructor and some prototype methods. I need this to add in the ReactJS App.

What I tried is, adding a script tag in client/index.html. Then upload the js file to client folder. When I call the constructor in my Apps.jsx file, I received an error, Constructor_name not defined.

How can I do it in correct way?

Answer 1

We do this in our project. You have to use a common object that both the browser and React share. So just create a reference into the window object.

import Foo from 'Foo';
import App from 'App';

//Foo.js
class Foo { constructor() {} }
window.Foo = Foo;

//App.jsx
let foo = new window.Foo();

If you have several you want to access and don't want to pollute the global scope:

//Foo.js
class Foo { constructor() {} }
window.MyApp = { Foo: Foo };