JavaScript Timer Learning Notes

Source: Internet
Author: User
Tags date execution setinterval thread time interval

Mastering the principle of the timer must know:JavaScript engine is single-threaded, the browser at any time only and only one thread running the JavaScript program. As the saying goes: SetTimeout and setinterval are pseudo threads.

JavaScript is run in a single-threaded environment, and there may be other code at different times in the page's declaration cycle that controls JavaScript processes, such as code contained in

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