How sort works in JavaScript

Learn why sorting a list of numbers in javascript yields unexpected results and how to use a compare function. Also, we'll show how the sort function on the Array.prototype might be implemented by re-implementing it our own `Array.prototype.mySort` that accepts our own compare function.
00:00 sort basics
02:00 Implement mySort with the merge sort algorithm
Code
gist.github.com/cjavdev/9fbfc...

[@alejandrogomezanaya6306]

Thanks for you explanation! It's very clear and specific.

[@anandhapriya5430]

Wow! beautifully explained. 👌

[@mbbvines1848]

really informative video. it shows the Internal working also. thanks a lot

[@Angkush-ry3oc]

It was really helpful 🙏

[@davisnoah347]

Love the detail and care you put into this video. Truly remarkable. You ought to get more views.

[@davisnoah347]

This video isn't just nice. It's frickin awesome. I love the way you explain it in simple terms. Not even fiinished watching yet. Ya earned a subscriber here. Keep up the good work.

[@jsuryakt]

Beautifully explained. Thank you for this

[@alirezafereydoni2827]

That's awesome

[@leonardorusso6419]

Nice video, thank you! P.s how you got that window for live run of the script ?

[@cjav_dev]

I’m using split panes in the terminal I use called iTerm.

[@leonardorusso6419]

@@cjav_dev Thanks!!

[@totfosk]

Hi ! Is it possible to know what does the sorting function do exactly? It does check if the sum or subtraction of a and b is positive or negative, but if you put for instance 4 values... what the hell is running underneath? I made console.log of 'a' having an array of 4 values and the console shows: on the first line the second value, then 3 lines of the third value and then 2 lines of the forth. 'b' shows: on the first line, the first value, then 2 lines of the second, then 2 lines of the first value again, and last line, the third. I am wondering how can an argument represent so many lines and what is going on... A method is just code that we don't see right? I am very new. Cheers!

[@soniablanche5672]

every javascript engine will implement sort in a different way but you can more or less assume they are using quicksort

[@totfosk]

@@soniablanche5672 gracias Sonia !!!

[@soniablanche5672]

original sort returns the original array itself because it mutates the array