let list: number[] = [1, 2, 3];<br />

// let arr_name, elemType[];<br /> let list: number[] = [1, 2, 3];<br /> // Generic array type, Array<elemType>:<br /> let list: Array<number> = [1, 2, 3];

// If we have an array, we can define its type in TypeScript by using the notation type[].</p> <p>let arrayType:string[] = [ ‘hello’, ‘there’ ]</p> <p>// Similarly, an array of numbers could be defined like this:</p> <p>let myNumbers:number[] = [ 1, 2, 3, 4 ];

let myArray:string[] = [“your”, “hello”, “world”];

const friends:string[] = [“Adil”, “Abrar”, “Anfal”,”Ashik”];

let list: number[] = [1, 2, 3];

let arraytest: any[] = [1, 2, 3]<br /> console.log(arraytest)<br /> /*<br /> Output: [1, 2, 3]<br /> or try this<br /> */<br /> console.log([1, 2, 3])// clever trick

interface Movie {<br /> title: string;<br /> lengthMinutes: number;<br /> }</p> <p>// The array is typed using the Movie interface<br /> var movies: Movie[] = [];</p> <p>// Each item added to the array is checked for type compatibility<br /> movies.push({<br /> title: ‘American History X’,<br /> lengthMinutes: 119,<br /> production: ‘USA’ // example of structural typing<br /> });</p> <p>movies.push({<br /> title: ‘Sherlock Holmes’,<br /> lengthMinutes: 128,<br /> });</p> <p>movies.push({<br /> title: ‘Scent of a Woman’,<br /> lengthMinutes: 157<br /> });</p> <p>function compareMovieLengths(x: Movie, y: Movie) {<br /> if (x.lengthMinutes > y.lengthMinutes) {<br /> return -1;<br /> }<br /> if (x.lengthMinutes < y.lengthMinutes) {<br /> return 1;<br /> }<br /> return 0;<br /> }</p> <p>// The array.sort method expects a comparer that accepts 2 Movies<br /> var moviesOrderedLength = movies.sort(compareMovieLengths);</p> <p>// Get the first element from the array, which is the longest<br /> var longestMovie = moviesOrderedLength[0];</p> <p>console.log(longestMovie.title); // Scent of a Woman

var listOfLists : number[][];<br /> // or<br /> const listOfLists : Array<Array<number>>;

var alphas:string[];<br /> alphas = [“1″,”2″,”3″,”4”]<br /> console.log(alphas[0]);<br /> console.log(alphas[1]);