What are the values in JavaScript that are ‘falsey’, meaning that they evaluate as false in expressions like if(value), value ? and !value?
There are some discussions of the purpose of falsey values on Stack Overflow already, but no exhaustive complete answer listing what all the falsey values are.
I couldn’t find any complete list on MDN JavaScript Reference, and I was surprised to find that the top results when looking for a complete, authoritative list of falsey values in JavaScript were blog articles, some of which had obvious omissions (for example, NaN), and none of which had a format like Stack Overflow’s where comments or alternative answers could be added to point out quirks, surprises, omissions, mistakes or caveats. So, it seemed to make sense to make one.