// Initialize new array

var names = ['John', 'Mark', 'Jane'];

var years = new Array(1990, 1969, 1948);

console.log(names[2]); // Jane

console.log(names.length); // 3

// Mutate array data

names[1] = 'Ben';

names[names.length] = 'Mary';

console.log(names);

// Different data types

var john = ['John', 'Smith', 1990, 'designer', false];

john.push('blue'); // last input

john.unshift('Mr.'); // first input

console.log(john);

john.pop(); // last remove

john.pop();

john.shift(); // first remove

console.log(john);

console.log(john.indexOf(23)); // -1 [because there is no such index.]

// Ternary Operator

var isDesigner = john.indexOf('designer') === -1 ? 'John is NOT a designer' : 'John IS a designer';

console.log(isDesigner); // John IS a designer