Optimizing JS Javascript globally

[dodieboy]

Hey, I will like to suggest to use includes() instate of indexOf() in your code when you are checking if the item exist. include() will be better in that case as you do not use the return int value of indexOf(), all you want is true or false which is what include() return.
Since it return true or false, equal operator is not needed (improve performance) and it is a Boolean (1 bit) which use lesser memory compare to int which is 16 bit.

Here is a performance test that I did: https://www.measurethat.net/Benchmarks/ShowResult/215464

[ghost]

True

[ImprovedTube]

much Ops/sec 🐶 @dodieboy
then why minification aint not doing this?
May anything be regex-replaced globally?
search
& replace

((\s*|& )(\w+).indexOf((["'].?["'])\s)\s+(!==|>)\s+-1\s+([{|&])
\1\2.includes(\3) \4

((\s*|& )(\w+).indexOf((["'].?["'])\s)\s+(==)\s+-1\s+([{|&])
\1!\2.includes(\3) \4

(\(\s*|& )(\w+).includes\((["'].*?["'])\s*\)\s+===\s+true\s+([\{|&])
\1\2.includes(\4) \4

(\(\s*|& )(\w+).includes\((["'].*?["'])\s*\)\s+===\s+false\s+
\1!\2.includes(\3) 

[dodieboy]

sadly include() do not accept regex as argument so indexOf() is the faster way for regex search

[ghost]

[dodieboy]

It look like include() is slower on string compare to using it on array. The longer the string you search, the speed have a bigger different comapre to indexof which the speed is more sable.

[ImprovedTube]

hi @dodieboy!
so, when checking

• a string: replace includes() with indexOf()
• an array: replace indexOf() with includes()

Now, shall we run this change on all javascript in the world?

[dodieboy]

Yup, it will really optimize the code if we are able to apply it too all codes

[ImprovedTube]

Hey @dodieboy why close?☺

[dodieboy]

cant think of any better way to optimize the code, will reopen when I have the time to research new ways

[ImprovedTube]

Oh, I moved it to this repo because it potentially applies to all JS in every (public) project. Thus it stays worth reading. hopefully there is a lot to come in this repo. Hope you like that.

[dodieboy]

I recently found this article about 6 method to search for a string in JavaScript which include benchmark of all 6 method and I feel it will be useful to share around.

When searching from small string (around 30 characters)

When searching from big string (more than 1 million characters)

https://koukia.ca/top-6-ways-to-search-for-a-string-in-javascript-and-performance-benchmarks-ce3e9b81ad31