condition ? ifTrue : ifFalse//ternary operator syntax and usage:
condition ? doThisIfTrue : doThisIfFalse
//Simple example:
let num1 = 1;
let num2 = 2;
num1 < num2 ? console.log("True") : console.log("False");
// => "True"
//Reverse it with greater than ( > ):
num1 > num2 ? console.log("True") : console.log("False");
// => "False"let startingNum = startingNum ? otherNum : 1
// can be expressed as
let startingNum = otherNum || 1
// Another scenario not covered here is if you want the value
// to return false when not matched.
//The JavaScript shorthandfor this is:
let startingNum = startingNum ? otherNum : 0
// But it can be expressed as
let startingNum = startingNum && otherNum//ternary operator example:
var isOpen = true; //try changing isOpen to false
var welcomeMessage = isOpen ? "We are open, come on in." : "Sorry, we are closed.";
function example(…) {
return condition1 ? value1
: condition2 ? value2
: condition3 ? value3
: value4;
}
// Equivalent to:
function example(…) {
if (condition1) { return value1; }
else if (condition2) { return value2; }
else if (condition3) { return value3; }
else { return value4; }
}
condition ? doThisIfTrue : doThisIfFalse
1 > 2 ? console.log(true) : console.log(false)
// returns false