How do you declare a variable in JavaScript?

In JavaScript, variables are used to store data values. Declaring a variable means defining the variable’s name and its type. Here’s a tutorial on how to declare a variable in JavaScript:

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Declaring a variable with the “var” keyword:

var myVariable;

In this example, “myVariable” is the variable name, and it’s not assigned any value yet. The “var” keyword is used to declare a variable in JavaScript.

Assigning a value to a variable:

myVariable = 5;

Here, we assigned a value of 5 to “myVariable”. The value can be of any data type, such as numbers, strings, booleans, objects, or arrays.

Declaring and assigning a variable at the same time:

var myVariable = "Hello, World!";

In this example, we’re declaring and assigning the variable “myVariable” to a string value of “Hello, World!” at the same time. This method is often used to save time and reduce code length.

Declaring a variable with the “let” keyword:

let myVariable;

The “let” keyword is used to declare a block-scoped variable in JavaScript. This means that the variable is…