ternary operator javascript html code example

Example 1: js ternary

condition ? ifTrue : ifFalse

Example 2: javascript ternary

// example:
age >= 18 ? `wine` : `water`;

// syntax:
// <expression> ? <value-if-true> : <value-if-false>

Example 3: ternary operator shorthand javascript

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

Example 4: ternary operator javascript

// 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

Example 5: using ternary operator in javascript

// program to check pass or fail

let marks = prompt('Enter your marks :');

// check the condition
let result = (marks >= 40) ? 'pass' : 'fail';

console.log(`You ${result} the exam.`);