![]() ![]() ![]() Apart from these the arrays, regular expressions and functions fall under special kinds of objects. The rest of the data types are known as reference types. In JS you can use the following seven primitive types of data: Basic Syntaxīefore we jump into implementing typeof operators, let us first understand the data types we can use in JavaScript for enhancing their overall functionality. Introduction to typeof and How to use them. ![]() With this article, we will take an in-depth look into the functionalities of typeof operators and the ways they can help craft a reliable and error-free codebase. To achieve this, one of the most commonly used operators is typeof. In Javascript, one variable can hold multiple value types within the same file as shown below: let x = 1 However, this becomes even more essential for accuracy when it comes to dynamically typed languages such as Javascript. Whereas if I use typeof with String literal, I get string as output.Checking data types for variables is vital in any programming language to ensure a smooth and error-free development process. In the below code if I use typeof with String object, I get the object as output. Lets try to understand both of these with examples. It gets the primitive value of the object Whereas valueOf is an inbuilt method applied across all the objects in the JavaScript. “object” if variable is null, an array, or another JavaScript object. ![]() The list of possible re-turned values are: The JavaScript typeof operator returns the type of a variable. typeof is an operator which takes a single parameter and returns its type as String. The first difference is mentioned in the first paragraph itself. Hello Friends, this is a small article which will help you to understand the difference between the typeof operator and in built JavaScript object method valueOf. ![]()
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