It took me way too long to understand the concepts of callbacks and promises... And all this while acting as a tester

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    I am working with js for a year now. I still don't​ know promises (I do know callbacks)....... But one day I will ... ğŸ˜Ž
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    basic async programing concept is easy to understand when you come from UI event programing.
    Think of a Promise like you think about a mouseclick event that will happen evetually, but you have no idea when exactly.
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