7 little-known Console methods in JavaScript

By rahmat hidayat

Saturday, March 9, 2024

Coding puzzle

Can you solve this coding puzzle?

Solve puzzle

Featured content

New array slice notation in JavaScript - array[start:stop:step]

With this new slice notation you'll stop writing slice() code like this:

And start writing code like this:

Much shorter, readable and intuitive.

And we don't even have to wait till it officially arrives — we can have it right now.

1.trace()

Where did we come from on the call stack? Let's trace() our steps back!

Fantastic for debugging:

1.Modularization on the fly: Dynamic imports

Keeping imports at the top-level was no longer a must; We could now easily resolve the module's name at compile time.

Loading modules optionally and only when absolutely needed for high-flying performance…

2.Flattening the curve

ES10's flat() and flatMap() gave much cleaner ways to easily flatten multidimensional arrays.

Eradicating the need for painful array-looping flattening code:

flatMap() is as good as calling map(), then flat(1):

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