TYPESCRIPT

typescript array

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

How to define an array type in typescript

// If we have an array, we can define its type in TypeScript by using the notation type[].

let arrayType:string[] = [ 'hello', 'there' ]

// Similarly, an array of numbers could be defined like this:

let myNumbers:number[] = [ 1, 2, 3, 4 ];

How to declare array in Typescript?

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

Arrays example in typescript

interface Movie {
  title: string;
  lengthMinutes: number;
}

// The array is typed using the Movie interface
var movies: Movie[] = [];

// Each item added to the array is checked for type compatibility
movies.push({
  title: 'American History X',
  lengthMinutes: 119,
  production: 'USA'    // example of structural typing
});

movies.push({
  title: 'Sherlock Holmes',
  lengthMinutes: 128,
});

movies.push({
  title: 'Scent of a Woman',
  lengthMinutes: 157
});

function compareMovieLengths(x: Movie, y: Movie) {
  if (x.lengthMinutes > y.lengthMinutes) {
    return -1;
  }
  if (x.lengthMinutes < y.lengthMinutes) {
    return 1;
  }
  return 0;
}

// The array.sort method expects a comparer that accepts 2 Movies
var moviesOrderedLength = movies.sort(compareMovieLengths);

// Get the first element from the array, which is the longest
var longestMovie = moviesOrderedLength[0];

console.log(longestMovie.title); // Scent of a Woman

array in typescript

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

typescript array

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

declare array typescript

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

typescript array in arrays

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

arrays in typescript

var alphas:string[]; 
alphas = ["1","2","3","4"] 
console.log(alphas[0]); 
console.log(alphas[1]);