How does the "this" keyword work, and when should it be used?

javascriptthis
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How do JavaScript closures work?

javascriptvariablesclosuresfunctionscope
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What do querySelectorAll and getElementsBy* methods return?

javascriptgetelementsbyclassnamedom-traversal
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What is the explicit promise construction antipattern and how do I avoid it?

javascriptpromiseqbluebirdes6-promise
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Dynamically access object property using variable

javascriptobjectproperties
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