Guess the Output | JavaScript Interview Questions | Math Function Fails & + Operator in JS
What will be the output of 'b' + 'a' + 'a' + 'a' in JavaScript? The output is 'b a a a'. Pretty simple, right? + operator we use for adding numbers can be used to concatenate strings. What if I add just a plus sign in it? What will be the output? It can be a javaScript interview question.
('b' + 'a' + + 'a' + 'a').toLowerCase();
Its banana.
Whait what?
from where n appeared in it?
In JavaScript, NaN is short for "Not-a-Number".
Because + 'a' outputs NaN
So it turned the whole thing in banana.
NaN shows up in JavaScript when Math functions fail or when a function trying to parse a number fails.
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