JavaScript Promise
A Promise is a guaranteed placeholder value for what a function or series of functions will return. It’s a promise to return a value eventually. The function swears this time is different. You can trust it. It …
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Async Programming
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JavaScript Callbacks
Brief History of Callbacks It all starts with the callback function. A callback function is just a plain JavaScript function that is passed into another function as an argument. That’s it. Nothing special. This …