Lesson: 05 | Variables

Notes

Variables are containers for storing data (storing data values).

We can declare a variable in JavaScript in for ways.

Using var

var x = 2;

Here x stores the value 2.

Using let

let y = 3;

Here y stores the value 3.

Using const

const z = 5;

Here z stores the value 5.

Use nothing

userName ="admin";

Here userName stores the String "admin".

We should always declare JavaScript variables with var, let, or const

If you think the value of the variable will not change (General Rule), use const otherwise use var or let.

The constant values cannot be changed.

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