How to use typeof with arguments in JavaScript?

Arguments object is the arguments passed to a function. It is a variable accessible for all functions. Let’s say two arguments are passed to a function, then you can access them like the following:


In the same way, you can use a type of with arguments in JavaScript. Firstly, let’s see how to work with the type of. The type of operator is a unary operator that is placed before its single operand, which can be of any type. 


The following code shows how to implement type of operator

Live Demo

         var a = 20;
         var b = "String";
         var linebreak = "<br />";

         result = (typeof b == "string" ? "B is String" : "B is Numeric");
         document.write("Result => ");

         result = (typeof a == "string" ? "A is String" : "A is Numeric");
         document.write("Result => ");

Let us now see how to use typeof with arguments in JavaScript. The typeof arguments will return an object like this:

document.write(typeof arguments);

Let’s say you have two arguments, then with typeof, you can refer them like the following, which will return the typeof arguments.

document.write(typeof arguments[0]);
document.write(typeof arguments[1]);