Javascript-ask a question about the cache mechanism?

Occasionally, when the page is refreshed, an error is reported, and jquery cannot be found. Then I can see that the external jqeury is followed by a string, so that the file cannot be found. How can I not add a string after it? Is this frontend control or backend?

Occasionally, when the page is refreshed, an error is reported, and jquery cannot be found. Then I can see that the external jqeury is followed by a string, so that the file cannot be found.

How can I not add a string after it?

Is this frontend control or backend?

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Occasionally, when the page is refreshed, an error is reported, and jquery cannot be found. Then I can see that the external jqeury is followed by a string, so that the file cannot be found.

How can I not add a string after it?

Is this frontend control or backend?

The front-end can also be controlled, and the back-end can also be, but now, it is generally the front-end. to prevent caching, there is a dedicated tool to add a number of hash characters to the file ....

I am doing this using hash or time. jquery. min. js? _ =