Discussion on "10 Incredible hacks that every JavaScript developer should know !!"

Learn with HJ · 2021-05-20T08:24:13.193Z

JavaScript can help perform complex operations on web pages. There are tones of JavaScript developers around the globe but, only few of them have a practice of writing down an optimized JavaScript code. An optimized code is a combination of smartly p...

Very nice it is good guide for me. Keep it up☺️

Glad you like it 😊

That was a nice read Hardeep Jethwani, I didn't know quite a few of these things :)

Thanks Eleftheria Batsou, Glad to know that :)

Sanvi Merin my pleasure :)

Reduce = Map + Filter + ...
Can you please explain why someArray.length = 0 is better than just someArray= [] - it is sort simple and more readable?
About the point it gets difficult to keep track we can use Proxy
We can using Map or Object
console.time has some caveats that why we have Performance API

blog.bitsrc.io/using-the-performance-web-api-with…

Hi Chau Giang, Thanks for your comment.

As per my understanding and experience -

Using someArray.length = 0 has an advantage that it wont allocate a new memory block. It will modify the existing variable "someArray".

Where as if you use someArray= [] , It will create a new array and assign a reference to a new variable. So it will occupy one more block of a memory.

Hi hardeep,

I wasn't aware of the performance module. That looks really promising. Though to measure time between two points, one can also use console.time, and it directly outputs the difference.

Cheers Shivam

Shivam Thanks to share this :)

Now we have a one more hack here :D

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10 Incredible hacks that every JavaScript developer should know !!

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