The Best Way to Add the JavaScript Component to Magento 2

To work with JavaScript, Magento 2 uses the RequireJS library. It is a module loader that implements the Asynchronous Module Definition (AMD) standard for JavaScript modules. Thanks to this library, the problem of page load speed and organizing JavaScript files is solved, and the files are loaded asynchronously. JavaScript program does not pollute the global namespace and it allows you to share the code and data between modules. 

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