Truthy and falsy values
Rules for evaluating truthfulness of statements
Expanding on the Boolean data type, every other piece of data in Create Classic can be evaluated in Boolean logic. We call the values that evaluate to true truthy, and the values that evaluate to false falsy.
The following values are falsy:
null"""false"false0and all negative numbers{}
All the other values are truthy. This is important for understanding the behavior of functions like if, or the Visibility binding. Namely, functions like these check if the argument is truthy or falsy, and then perform an action depending on that.
Examples
Transformation
{
true: if(`true`, 'truthy', 'falsy'), // Returns 'truthy' if first argument is truthy, otherwise 'falsy'
false: if(`false`, 'truthy', 'falsy'),
emptyArray: if(`[]`, 'truthy', 'falsy'),
zero: if(`0`, 'truthy', 'falsy'),
one: if(`1`, 'truthy', 'falsy'),
minusOne: if(`-1`, 'truthy', 'falsy'),
charArray: if(`['a']`, 'truthy', 'falsy'),
emptyObject: if(`{}`, 'truthy', 'falsy'),
null: if(`null`, 'truthy', 'falsy'),
falseString: if('false', 'truthy', 'falsy'), // string equal to 'false', not Boolean
zeroString: if('0', 'truthy', 'falsy'), // string equal to '0', not number
object: if(`{"object": true}`, 'truthy', 'falsy'),
nullString: if('null', 'truthy', 'falsy'),
emptyString: if('', 'truthy', 'falsy')
}Result
{
"true": "truthy",
"false": "falsy",
"emptyArray": "falsy",
"zero": "falsy",
"one": "truthy",
"minusOne": "falsy",
"charArray": "truthy",
"emptyObject": "falsy",
"null": "falsy",
"falseString": "falsy",
"zeroString": "truthy",
"object": "truthy",
"nullString": "truthy",
"emptyString": "falsy"
}Was this article helpful?
That’s Great!
Thank you for your feedback
Sorry! We couldn't be helpful
Thank you for your feedback
Feedback sent
We appreciate your effort and will try to fix the article