How would you check if a variable is null/undefined?


No Answer is Posted For this Question
Be the First to Post Answer

Post New Answer

More JavaScript Interview Questions

Explain the difference between java and javascript.

0 Answers  


What is output of undefined * 2 in javascript?

0 Answers  


What is difference between arrow function and normal function?

0 Answers  


Write a Program using Servlet and JDBC for developing online application for displaying the details of Cars owned by the residents in XYZ society. Make necessary assumptions and create appropriate databases

0 Answers   Ignou,


Write JavaScript code to use file system in binary format?

0 Answers  






List some features of javascript.

0 Answers  


What is the ‘Strict’ mode in JavaScript and how can it be enabled?

0 Answers  


How to convert a string to a number using javascript?

0 Answers  


What is the disadvantage of javascript?

0 Answers  


How to handle exceptions in JavaScript?

0 Answers  


What are the advantages of javascript?

0 Answers  


What is the default data type in javascript?

0 Answers  


Categories