Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
In JavaScript…
'\t\n ' == false // true
I can assume that any string that consists solely of whitespace characters is considered equal to false in JavaScript.
According to this article, I figured that false would be converted to 0, but was unable to find mention of whitespace considered equal to false using Google.
Why is this? Is there some good reading on the subject besides digging into the ECMAScript spec?
This page provides a good summary of the rules.
Going by those rules, the
'\t\n 'is converted in a number (Number('\t\n') ==> 0), and thefalseis converted into a number (Number(false) ==> 0), and hence the two are equal.Alex’s answer is also a good breakdown of the particular case of
'\t\n ' == false.An important distinction is that
'\t\n 'is not falsy. For example: