How Can I Dynamically Load and Access External JavaScript Files Within Another JavaScript File?

Dynamically Loading JS from JS

Issue:

On a dynamic web page, loading an external JS file conditionally within another JS file has proven challenging. Attempts to inject script elements using document.createElement() have failed to make the content accessible to the current JS file.

Solution:

To dynamically load JS from JS, it is crucial to account for the asynchronous nature of script loading. Here's a revised approach that incorporates event handling:

var script = document.createElement('script');
script.onload = function () {
  // Now the loaded script's content is accessible
  // ...
};
script.src = 'path/to/external.js';
document.head.appendChild(script);

By using the onload event, the script's execution is paused until the external script is fully loaded. This ensures that the loaded content is available before proceeding.

Note:

1. Add the script element to the DOM using document.head.appendChild(script) or an equivalent DOM manipulation method.
2. Ensure that the something variable in the original code snippet points to the path of the external JS file you want to load dynamically.

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