difference between let, var, and const in angular
v var variables value
can be changed and re-declared within its scope. let variables value can be changed but not
re-declared; const variables
value can neither be updated nor re-declared.
v They are all hoisted
to the top of their scope but while var variables are initialized with undefined, let and const variables are
not initialized.
v var declarations
are globally scoped or function scoped while let and const are block-scoped.
v var and let can be declared
without being initialized, const must be initialized during declaration.
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