The firing timing of Immediately Invoked Function Expression (IIFE).

Array is one of the fundamental types that appears in all programming languages which every programmer should master in its usage.

Some secret features in JavaScript function parameter

The cost and performance for adding async keyword to a function

String operation is very common in any program especially those requires in processing user input.

Javascript setTimeout with async callback

Error handling for async and Promise

Async/await is not a solution for everything and the Promise() is still having a reason to exist.

Printing HTML is easy and fun

Confusion with 'this' keyword

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