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"//ternary operator example:
var isOpen = true; //try changing isOpen to false
var welcomeMessage = isOpen ? "We are open, come on in." : "Sorry, we are closed.";
// ternary operators are frequently used as a shorter cleaner if statement
// condition ? exprIfTrue : exprIfFalse
let age = 15;
let canDrive = age >= 16 ? 'yes' : 'no';
// canDrive will be 'no'
// the condition will be age > 16 which is false so canDrive will equal exprIfFalse
// this ternary is the same as this if else statement
let age = 15;
let canDrive;
if (age >= 16) {
canDrive = 'yes';
} else {
canDrive = 'no';
}
// canDrive will be 'no' because 15 is less than 16
condition ? exprIfTrue : exprIfFalse
//Example
let age = 26;
let beverage = (age >= 21) ? "Beer" : "Juice";
console.log(beverage); // "Beer"// Write your function here:
const lifePhase = (age) => {
return age < 0 || age > 140 ? 'This is not a valid age':
age < 3 ? 'baby':
age < 13 ? 'child':
age < 20 ? 'teen':
age < 65 ? 'adult':'senior citizen';
}
console.log(lifePhase(5))