This content originally appeared on DEV Community 👩‍💻👨‍💻 and was authored by Himanshu Shukla
Question 1: What is an Event Loop in Node.js?
Answer: Event Loop is the control flow constructs in Node.js. In short, Event Loop is a mechanism that delegates the responsibility of handling events and requests in Node, making it faster and more efficient than other technologies.
Question 2: What will the output of the following code?
var x = {foo:1};
var output = (function () {
delete x.foo;
return x.foo;
}
) ();
console.log(output);
Answer: The output for the above code will be UNDEFINED since the DELETE operator is used for deleting properties from objects. In this code, we are trying to reference a deleted property, therefore, the result will be UNDEFINED.
To Read More, Click On - full stack developer interview questions
This content originally appeared on DEV Community 👩‍💻👨‍💻 and was authored by Himanshu Shukla
Himanshu Shukla | Sciencx (2022-09-20T16:45:38+00:00) Full Stack Developer Interview Questions And Answers. Retrieved from https://www.scien.cx/2022/09/20/full-stack-developer-interview-questions-and-answers/
Please log in to upload a file.
There are no updates yet.
Click the Upload button above to add an update.