Best way to use Google's hosted jQuery, but fall back to my hosted library on Google fail

Question

What would be a good way to attempt to load the hosted jQuery at Google (or other Google hosted libs), but load my copy of jQuery if the Google attempt fails?

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Answer 1

• Step 1: Did jQuery fail to load? (check jQuery variable)

How to check a not-defined variable in JavaScript

• Step 2: Dynamically import (the backup) javascript file

How do I include a JavaScript file in another JavaScript file?