Is This the Most Useful JavaScript Method?

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Methods such as map(), filter(), every() & reduce() are useful, but which one would you choose if you couldn't use one of the other 3 again? Let's find out.
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Опубликовано:

7 июл 2024

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Комментарии : 15

@EricEGunes 27 дней назад

Absolutely!!! Reduce() ! You can do same jobs if you know how to! - but the performance results for processing an array of 100,000 elements: • map() took approximately 0.044 seconds • reduce() took approximately 19.010 seconds

@beratyilmaz7951 27 дней назад

not true, write your code so we can test it

@raven.4815 27 дней назад

A whooping 19 secs? That's absolute madness

@alexanderkomanov4151 25 дней назад

Nice one! Thanks!

@marshallgraphic 27 дней назад

I don't think result && ... will reassign the value to result, or am I mistaking the prev result is the value of the previous return value?

@mimosveta 26 дней назад

it will

@dcode-software 26 дней назад

Yeah it works because once it reaches the first element that gives "false", the value can't ever evaluate to "true" ever again because we use &&

@mimosveta 26 дней назад

I knew of it for few years, and basically never used it, but I think I will start now... I guess I'll first use it to translate other methods to reduce, just to get used to it...

@dcode-software 26 дней назад

Yeah sure, but of course, I'm not suggesting you replace "map" with "reduce". If the method exists for the purpose then definitely use it. This video is more for education