html - Is JavaScript pass-by-reference or pass-by-value?

Is JavaScript language a pass-by-reference or pass-by-value language?

Also is it different for primitive types Vs for objects ?

Answer

Objects are passed by reference while primitives are passed by value.

Note, that primitive values include the following:

• number


• String


• boolean



• undefined


• null

You can find some more details at MDN on Functions.