What are the differences between Thread and Promise

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I am more of the desktop world, but I’m wanting to know more about WEB. And I wonder if there is a difference between javascript and C thread#.

javascript c# .net promises
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    There is a difference, yes, they are two completely different things.

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Thread and Promise are completely different things.

The engine that runs js in the browser is single-thread, as javascript is event-driven we usually don’t work directly with the thread but with the eventloop.

Promise is a feature that has come to end the excessive callback call, where it will perform a processing asynchronously. According to the documentation: A Promise (from "promise") represents a value that may be available now, in the future or never.

A Promise can assume 4 states. ( pending, held, rejected, settled)

For full information, please visit the documentation: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise

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