# Truthy and Falsy

There are six values that are considered to be falsy in JavaScript.

0; //the number zero
false; //the Boolean false value
(""); //an empty string
null; // a variable that is intentionally set to empty
undefined; // a variable that has been declared but not assigned a value yet
NaN; // Not a Number - the result of Mathematic operations when a non-numeric input was provided

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EVERYTHING else in JavaScript is considered to be truthy. And I mean EVERYTHING.

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