With these requirements
4gb RAM
Core i3
500 gb hard drive HDD

What can i learn and develop apps?
-Reactjs
-Vuejs
-Flutter

You can get some free cloud stuff too
https://free-for.dev/

well ofc you can learn either and all of those!

For instance, I've learned Java on a Samsung NF210 - a 1GB RAM netbook with an Intel Atom CPU. With a full-blown Eclipse IDE and stuff.

Are you saying you can't do javascript on a machine 4+ more powerful than I did Java on?

@netikras
My machine become so laggy when i develop small app with ReactJS
My OS is win 10 64bit?

@kindOfCoding

Change to ssd
And start writing lisp

If ur pc is slow and ur on windows you should consider going for linux. For weak devices with low specs, Linux makes them much faster. If ur on Windows and VS code runs fine, there should be no problem for the frameworks. If flutter uses an ide ... well they usually take more rescources

@joewilliams007
I think the problem is with my VScode
It eats more than 1 gb from ram capacity

@kindOfCoding maybe notepad++ code editor then? Its more lightweight but still has the basics. But u dont get auto completion with it. Some luneatics may aswell recommend Vim.

Also theres vs code in the browser by Microsoft. It could work better but u cant run stuff on there.

@kindOfCoding Try WebStorm? I have it open and It's using <500MB

Maybe that's a sign that you shouldn't use those frameworks if they are so resource hungry.

@kindOfCoding switch to linux, windows 10 is resource-heavy. or download software that debloats your windows 10 and pray everything goes a little bit smoother. if you switch to linux, I'd recommend ubuntu. and you can dual-boot it easily, so if you need windows 10 for anything, like gaming, you'd have it.

Whether you can learn them doesn't depend on your machine, but on you. Whether it will be fun to use the lowest-spec PC as a coder workstation highly depends on whether you are one of these VI nerds or want to use one of the full-size IDEs.

A fully-featured IDE can use more than 3 GiB alone just for itself, indexes, analysis caches and stuff. Want to use some local database or cloud emulator - that can easily eat up another GiB. And you didn't start any containers or browsers yet... Your milage may vary - but even if it all fits into the RAM, be prepared for some serious CPU and IO lag.

If you really have to start cheap, try to get a used machine with 16 GiB and at least a tier better CPU - and buy a new SSD.