Warning: String.x is deprecated use a developer is writing a program, there can be multiple situations when it is expected out of the program execution to follow a specific path based on certain conditions.

Warning: JavaScript 1.6's for-each-in loops are deprecated.Warning: 08/09 is not a legal ECMA-262 octal constant.Warning: -file- is being assigned a //# sourceMappingURL, but already has one.TypeError: variable 'x' redeclares argument.TypeError: setting getter-only property 'x'.TypeError: property 'x' is non-configurable and can't be deleted.TypeError: invalid assignment to const 'x'.TypeError: invalid 'instanceof' operand 'x'.TypeError: cannot use 'in' operator to search for 'x' in 'y'.TypeError: can't redefine non-configurable property 'x'.TypeError: can't delete non-configurable array element.TypeError: can't define property 'x': 'obj' is not extensible.TypeError: can't assign to property 'x' on 'y': not an object.TypeError: can't access property 'x' of 'y'.TypeError: X.prototype.y called on incompatible type.TypeError: Reduce of empty array with no initial value.TypeError: 'x' is not a non-null object.Synta圎rror: unterminated string literal.Synta圎rror: test for equality (=) mistyped as assignment (=)?.Synta圎rror: redeclaration of formal parameter 'x'.One common usage is to handle a value that may be null: let greeting = person => after property list Var beverage = (age >= 21) ? 'Beer' : 'Juice' If condition is any of these, the result of the conditional expression will be the result of executing the expression exprIfFalse.

Descriptionīesides false, possible falsy expressions are: null, NaN, 0, the empty string ( ''), and undefined. exprIfFalse An expression which is executed if the condition is falsy (that is, has a value which can be converted to false). exprIfTrue An expression which is evaluated if the condition evaluates to a truthy value (one which equals or can be converted to true). Syntax condition ? exprIfTrue : exprIfFalse Parameters condition An expression whose value is used as a condition. If you'd like to contribute to the interactive examples project, please clone and send us a pull request. The source for this interactive example is stored in a GitHub repository.

Javascript conditional