What does "no-ops" mean in Javascript [closed]

Question

I'm looking at Mozilla scope cheat sheet and it states:

var

• function-scoped
• hoist to the top of its function
• redeclarations of the same name in the same scope are no-ops

I can't find any reference to the definition of "no-ops"? What does it mean? Does it mean "no operation", meaning it doesn't redeclare it, simply changes the value?

Answer 1

A no op (or no-op), 'for no operation', is a computer instruction that takes up a small amount of space but specifies no operation. The computer processor simply moves to the next sequential instruction.

redeclarations of the same name in the same scope are no-ops

If there is a re-declaration, then the instruction will simply be skipped.. i.e. it wont be redeclared.

Red : Step skipped.