How to assign values to external variables in ajax Asynchronous callback function

This article introduces the knowledge of "how to assign values to external variables in the ajax asynchronous callback function". In the operation of actual cases, many people will encounter this dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

The copy code is as follows:

$(function () {var str = "aaa"; $.post ("http://localhost/UIBMSPHPProj/index.php/Index/abc",{},function(data){ / / data =" bbb "; console.log (str); / / aaa str = data; console.log (str); / /" bbb "}); console.log (str); / /" aaa "})

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