Today we’re going to learn about var vs let vs const

Before ES6 VAR was the King. We used var in everywhere we wants to declare a variable

var variables can be re-declared and updated

Now we divide var with two different types one CONST & other LET

CONST is declared for those value which will not changed anytime! Or will not be updated at any point. const cannot be updated or re-declared, this will lead you to an error you if try

We use LET when their is a change of updating the variable

LET can be updated but not re-declared. This will give a error you can’t run code

So in es6 we use LET & CONST not Var!

Do you knew this before ?

You can see the graphical version here

Originally it published on nerdjfpbblog. You can connect with me in twitter or linkedin !

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