It's the only one JavaScript currently has, though. If the condition is true, value1 is returned. The condition is a statement that returns true or false. This operator can save you time and lines of code. They can even be chained: serveDrink(userIsYoungerThan4 ? 'Milk' : userIsYoungerThan21 ? 'Grape Juice' : 'Wine') īe careful, though, or you will end up with convoluted code like this: var k = a ? (b ? (c ? d : e) : (d ? e : f)) : f ? (g ? h : i) : j ġ Often called 'the ternary operator,' but in fact it's just a ternary operator. JavaScript’s question mark is commonly used in the ternary operator, which is an abbreviated version of an if-else statement. Like all expressions, the conditional operator can also be used as a standalone statement with side-effects, though this is unusual outside of minification: userIsYoungerThan21 ? serveGrapeJuice() : serveWine() ServeDrink(userIsYoungerThan21 ? 'Grape Juice' : 'Wine') This can be shortened with the ?: like so: var userType = userIsYoungerThan18 ? 'Minor' : 'Adult' Here is an example of code that could be shortened with the conditional operator: var userType This is a one-line shorthand for an if-else statement.

Javascript questionmark operator