Got a JavaScript interview lined up? Don’t worry. We’ve got the latest and most relevant JavaScript Interview Questions outlined in this post. These will help you understand the level of the questions asked in interviews and thus increase your chances of selection. We’ve made sure the answers are easy to understand and simple to remember. Hopefully, this exposure will make you better prepared for the interview. But don’t forget that success not only depends on your technical skills but your behavior matters too. Hence, if you want to be a cut above the rest, then prepare in advance, practice more, and perform well. Let’s now move to the JavaScript Q&A section.
Latest JavaScript Interview Questions
What’s an object in javascript and how do we create them? What is the scope in JavaScript? What is <this> in JavaScript? What is the prototype property in JavaScript? What is Closure in JavaScript? Why is “self” needed instead of “this” in JavaScript? What is an anonymous function and when should you use it? What is the difference between “==” and “===”? What are JavaScript data types? What is prototypal inheritance in JavaScript? What is an asynchronous programming? Why is it important in JavaScript? What is variable typing in JavaScript? What are the different ways to create an array in JavaScript?
What are JavaScript Cookies? Which built-in method adds one or more elements to the end of an array and returns the new length of the array? What is the naming conventions for the variables in JavaScript? How will you create a Cookie using JavaScript? How to read a Cookie using JavaScript? How to delete a Cookie using JavaScript? How do you submit a form using JavaScript? Why should you not prefer to use global variables in JavaScript and how can you prevent it? What are the different objects used in JavaScript? What do we achieve by deferring the loading of JavaScript? What is the Strict Mode in JavaScript? What are event handlers in JavaScript and how to use them? What does a JavaScript function result when it has no return statement? What is encodeURI() function? How does the <Array()> differ from <[]> while creating a JavaScript array? How does variable hoisting take place in JavaScript? How will you replace all occurrences of a string in JavaScript?