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JavaScript Using Constants with Arrays and Objects

guram dgebuadze
guram dgebuadze
Front End Web Development Techdegree Student 4,122 Points

const should I use pop() in Array? browser allows me, but as I get concept of const I shouldn't change existed value.

If I get clearly I use const I should only add new things, but I can't change already existed ones. But when is used pop() or shift() browser didn't have any problem. can someone help me?

1 Answer

Steven Parker
Steven Parker
225,712 Points

The constant contains a reference to the array. This is the part that cannot be changed — that variable will always reference the array. You cannot re-assign it with something else.

But you can still change what is inside the array, which is what "pop" and "shift" do.