Var declarations can be either globally scoped or function scoped. It is globally scoped if the var variable is declared outside a function can be used anywhere in the whole window. The var is function scoped when it is declared within a function and be used only inside the function.
#Declaring variable var
var greeter = ‘hi’
const are the variables declared with the const and can maintain only constant values. Const declarations can only be accessed inside the block only where it was declared.
#Declaring const
const greeting = ‘hi’
The main difference between var and const is var can be re-declared and updated and const cannot be re-declared or updated.
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