var isn’t global unless it’s not inside a function. var is just function scoped, with declaration auto hoisted to the beginning of the function. let is a little more intuitive since you can’t refer to it before it’s been declared and has block scope rather than function scope.
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Joke’s on you because they’re all still mutable objects behind the reference.
Last one can be freely changed by anyone, the middle one still has some restraints.
varisn’t global unless it’s not inside a function.varis just function scoped, with declaration auto hoisted to the beginning of the function.letis a little more intuitive since you can’t refer to it before it’s been declared and has block scope rather than function scope.