Interview Questions
1. What does the isNaN() function?
The isNan() function returns true if the variable value is not a number.
For example:
function number(num) {
if (isNaN(num)) {
return "Not a Number";
}
return "Number";
}
console.log(number('1000F'));
// expected output: "Not a Number"
console.log(number('1000'));
// expected output: "Number"
Submit an interview question
Submitted questions and answers are subject to review and editing, and may or may not be selected for posting, at the sole discretion of w3Sniff.
Get Started
Comments
Leave a Comment