What is the difference between “=” and “=”? They are useful in the following scenario.var testFunction= function()įollowing are the key usage of anonymous functions. Here’s the same example created as an anonymous function. Here’s a typical example of a named function. For example, we declare a new function to be supplied as an argument to a function call or to assign a property of another object. Also, the function operator can be used to create a new function, wherever it’s valid to put an expression. We use the function operator to declare an anonymous function, instead of the function declaration. They’re called anonymous functions because they don’t have a name like normal functions. What is an anonymous function and when should you use it?Īnonymous functions are functions that are dynamically declared at runtime. The syntax of creating an object using object literal is as follows. JavaScript supports the following three ways to create objects. It doesn’t need to define a class for creating an object instead creates it directly Since JavaScript is an object-based language, it treats everything as an object. JavaScript Interview Questions and Answers Q.1- What’s an object in javascript and how do we create them?Ī JavaScript object is an entity having state and behavior (properties and method). It is worth checking out them if you plan to become a MEAN stack or a full stack web developer. In our previous posts, we’d covered a wide range of interviews for web developers especially on HTML5, CSS, JavaScript, Angular, and Node.js. It not only used for creating high-end web applications but also powers many web development frameworks like Angular and Node.js. JavaScript is cutting-edge technology and remain in high demand. And there is a high probability that you might face similar types of questions during interviews.

After a thorough analysis, we came up with this list. We’ve listed down the top 30 JavaScript interview questions and answers for web developers.

Javascript interview questions