Differentiating JavaScript Variables With Examples

JavaScript is one of the top programming languages used to build websites and applications. Knowing the key differences between JavaScript variables is essential if you plan on doing any web development or coding related tasks. Fortunately, the differences between the different types of JavaScript variables aren’t that difficult to understand, and can help you get more done much faster.

In this blog post, we’ll take a look at the key differences between the different types of JavaScript variables and provide some examples to help you better understand the differences.

Types of JavaScript Variables

There are four main types of JavaScript variables:

• String Variables: A string variable is a type of data that is enclosed within quotation marks and can be used to store any type of text content.
• Numeric Variables: A numeric variable is simply a number that can be used to store any type of numerical value.
• Boolean Variables: A boolean variable is a type of data that can only have either the value of true or false.
• Array Variables: An array variable is a type of data that stores a collection of related values. Arrays are denoted by being enclosed by square brackets.

Examples of JavaScript Variables

String Variables

For example, let’s say we want to store the user’s name in a string variable. We can do this like so:

var userName = "John Smith";

Numeric Variables

Let’s say we want to store a user’s age in a numeric variable. We can do this like so:

var userAge = 28;

Boolean Variables

Boolean variables can be used to store yes/no values. Let’s say we want to store whether a user is a subscribed user or not. We can do this like so:

var isSubscribed= true;

Array Variables

Array variables can be used to store related data. For example, let’s say we want to store a list of user emails in an array. We can do this like so:

var userEmails = ["email1@example.com", "email2@example.com", "email3@example.com"];

Conclusion

Understanding the different types of JavaScript variables is extremely important for any novice or intermediate web developer. Once you understand the differences between the different types of JavaScript variables, working with JavaScript code will become much easier and more intuitive.