Are you having difficulties with the problem How to get the Class Name of an Object in JavaScript? Don’t worry! This article will help you find the best way to do it. Let’s get started!  

How to get the Class Name of an Object in JavaScript?

Before learning about “How to get the Class Name of an Object” in JavaScript, we want to give you some information about the Class Name of an Object in JavaScript:

In JavaScript, One of the data types is provided by the Object class. Complex entities and numerous keyed collections are also stored there. You might frequently have to retrieve the name of a class in JavaScript. It helps debug messages or for using the class name as an identifier.

Let’s follow some methods to get the Class Name of an Object below:

Method 1: Get the Class Name in JavaScript by using the name Property 

The name property of an object’s constructor can be used to determine the class name in JavaScript. Doing so allows us to select the class name we used to create the object.

For instance, the input will be:

function Test_func() {}
let exp_test = new Test_func();
console.log(exp_test.constructor.name);
console.log(Test_func.name);

Output:

Test_func
Test_func

Method 2: Get the Class Name in JavaScript by using the isPrototypeOf() Function 

The isPrototypeOf() function determines whether a given object is another object’s prototype. The prototype attribute of the object must first be used.

Take a look at the example below: 

function Test_func() {}
let exp_test = new Test_func();
console.log(Test_func.prototype.isPrototypeOf(exp_test));

The output will be: 

true

Method 3: Get the Class Name in JavaScript by using the typeof Operator 

A string describing the type of the operand is provided by the typeof operator.

function exp_Func() {}
let func_sample = new exp_Func();
typeof exp_Func;
typeof func_sample;
console.log(typeof exp_Func);
console.log(typeof func_sample);

That will give out the output:

function
object

Method 4: Get the Class Name in JavaScript by using the instanceof Operator 

The instanceof operator can determine whether the constructor’s prototype property appears in the object’s prototype chain even when it does not directly provide the class name.

Look at the following commands:

function exp_Func1() {}
let func_sample1 = new exp_Func1();
console.log(exp_Func1.prototype.isPrototypeOf(func_sample1));
console.log(func_sample1 instanceof exp_Func1);
console.log(func_sample1.constructor.name);
console.log(exp_Func1.name);

The output of the script above:

true
true
exp_Func1
exp_Func1

The reason why it returns true is that  test belongs to Test

Conclusion

Obtaining a class name in JavaScript is a fairly straightforward task. We hope you can find the best way to do it whenever you ask yourself, How to get the Class Name of an Object in JavaScript on our page. If there are any other problems with this error, please comment below, and we will reply as soon as possible! Thank you for reading!

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