Technical Question Bank · Peer-Reviewed
Search and filter frequently asked interview questions across technical, programming, and behavioral domains. Tailor your interview preparation by difficulty for freshers or experienced developers (1,100 available).
Polymorphism in JavaScript classes means that different objects can share the same methods, even if they belong to different classes. This allows us to reuse code across ...
In JavaScript, a prototype is an object that contains properties and methods that can be shared by all objects created with the same constructor function. It helps to red...
Prototypal inheritance allows objects to inherit properties and methods from their parent objects. When an object is created with a constructor function, its prototype is...
The main difference between prototypal and classical inheritance is that prototypal inheritance allows objects to inherit properties and methods directly from other objec...
| Prototype | Constructor Function | | --------------------------------------------------------------------------------- | -----------------------------------------------...
We can add properties and methods to an object's prototype by using the constructor function's prototype property. To add a property, simply assign a value to a property ...
In other words, `Object.prototype` is the object that provides default properties and methods that all objects in JavaScript inherit from. On the other hand, `Object.__pr...
We can check if an object inherits from a specific prototype by using the `isPrototypeOf()` method. This method can be called on a prototype object to check if it appears...
We can override a method in an object's prototype by redefining the method on the prototype. To do this, you simply assign a new function to the existing property on the ...
The main difference between `new Object()` and `Object.create()` is that `new Object()` creates a new object from scratch, while `Object.create()` creates a new object th...
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