Prepare comprehensively for your JavaScript interview with our extensive list of 114 questions. Each question is designed to test and expand your JavaScript expertise. Suitable for all experience levels, these questions will help you prepare thoroughly. Download the free PDF now to get all 114 questi...
JavaScript To avoid this, add a question mark at the end of each item being accessed. This tells Javascript to use optional chaining. When using optional chaining, if the object being accessed is undefined, the entire operation short circuits and evaluates to undefined. // Safe property acce...
2. Write a function that takes an array of objects and a key, and returns a new array sorted based on the values of that key in ascending order. By asking this question, hiring managers analyze how well the candidate can discuss the sorting algorithm and its time complexity. It’s also...
So we want some custom tags like below: `<mytags:formatNumber number="123456.789" format="#,###.00"/>` Based on the number and format passed, it should write the formatted number in JSP page, for the above example it should print 123,456.79 We know that JSTL doesn’t provide any in...
The next example is my typical interview question. I will use it to demonstrate how one can solve the problem step by step, then write same solution using JavaScript. I will also show how it can be developed by writing unit tests first....
As shown here, this becomes more than just a stylistic preference in JavaScript.7. What will the code below output? Explain your answer. console.log(0.1 + 0.2); console.log(0.1 + 0.2 == 0.3); View answer An educated answer to this question would simply be: “You can’t be sure. ...
It’s a great design question and asked a lot in java interviews. This post provides all the differences between abstract class and interface. When should we use interface over the abstract class and vice versa? The post also explains how to use abstract class and interface to create a flexi...
If you don't know how to solve the task or answer the question, do not panic. It happens to everyone, even pro Front-End developers.Showcase your skills and projects:They would like to see projects to understand your work better. You can include current projects in your portfolio even ...
Question 4: What are the components of CSS styles? A style rule consists of three parts: Selectors– Selectors are HTML tags used to select content to be styled. It selects HTML elements based on theirID, class and name. Attributes– An attribute is an attribute of an HTML tag. In shor...
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