I need a little js help, I don't know what to search for this. Problem is I think abc shouldn't be updated. But it is updating and I don't know the reason, so came here to know the reason.

key terms you should be looking for are

pass by value

vs

pass by reference

Some things are pass by value in JS, others reference. The 2nd answer here does a good job of explaining https://stackoverflow.com/questions/518000/is-javascript-a-pass-by-reference-or-pass-by-value-language

my one logic fits in here, but not sure if its correct. Address of object abc is passed instead of actual object. so the modification happens on the object placed at the location.

basic answer is to use a primitive instead of an object

Hmmm, I got it now, Thanks a lot for your help @battk and @PNJ

What are your preferred ways of copying an object? JSON.parse(JSON.stringify(theObject))?

@Watz The correct way to copy an object is by using

N/util

module.

Ah, intresting. Didn't know it had that.

its essentially Object.assign, with the same weakness that it isnt a deep clone

Yeah I'm pretty sure that is exactly what the util is doing, looping first level properties and assigning

Or for shallow clone in SS2.1,

const clone = { ...objectToBoCopied };

So that dumb question actually brought me some enlightenment 😀, Thanks you guys for these .