How to Initialize an Array in TypeScript - Step by Step Examples
How to Initialize an Array in TypeScript ?
Answer
To initialize an array in TypeScript, you can use type annotations or inference.
✐ Examples
1 Initialize Array with Type Annotation
In this example,
- We declare an array named
numbers
with type annotation and initialize it with integer values. - This creates an array of integers in TypeScript.
- We log the array elements to the console.
TypeScript Program
let numbers: number[] = [1, 2, 3, 4, 5];
console.log(numbers);
Output
[ 1, 2, 3, 4, 5 ]
2 Initialize Array with Inference
In this example,
- We initialize an array named
fruits
with string values without type annotation. - TypeScript infers the type as an array of strings.
- We log the array elements to the console.
TypeScript Program
let fruits = ['Apple', 'Banana', 'Orange'];
console.log(fruits);
Output
[ 'Apple', 'Banana', 'Orange' ]
Summary
In this tutorial, we learned How to Initialize an Array in TypeScript language with well detailed examples.
More TypeScript Arrays Tutorials
- How to Declare an Array in TypeScript ?
- How to Initialize an Array in TypeScript ?
- How to Access Array Elements in TypeScript ?
- How to Access Array Elements using Index in TypeScript ?
- How to get First Element in Array in TypeScript ?
- How to get Last Element in Array in TypeScript ?
- How to check if an Array is Empty in TypeScript ?
- How to check if an Array is Not Empty in TypeScript ?
- How to get Sub Array in TypeScript ?
- How to Get Array Length in TypeScript ?
- How to Iterate Over an Array in TypeScript ?
- How to Iterate Over an Array in Reverse Order in TypeScript ?
- How to get the Index of Specified Element in an Array in TypeScript ?
- How to check if Specified Element is present in the Array in TypeScript ?
- How to count the Number of Occurrences of Specified Element in the Array in TypeScript ?
- How to Sort an Array in TypeScript ?
- How to Sort an Array in Ascending Order in TypeScript ?
- How to Sort an Array in Descending Order in TypeScript ?
- How to create a Two Dimensional Array in TypeScript ?
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- How to create a Three Dimensional Array in TypeScript ?
- How to Copy an Array in TypeScript ?
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- How to check if Two Arrays are Equal in TypeScript ?
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- How to Convert an Array of Integers to an Array of Strings in TypeScript ?
- How to Convert an Array of Strings to an Array of Integers in TypeScript ?
- How to Reverse an Array in TypeScript ?
- How to Shuffle an Array in TypeScript ?
- How to Rotate Elements in an Array in TypeScript ?
- How to Filter Elements of an Array based on a Condition in TypeScript ?
- How to Declare an Integer Array in TypeScript ?
- How to Declare a Float Array in TypeScript ?
- How to Declare a String Array in TypeScript ?
- How to Remove Duplicates in an Array in TypeScript ?
- How to Remove Specific Element from an Array in TypeScript ?
- How to Remove Element from Array based on a Condition in TypeScript ?
- How to Sort a String Array in Dictionary Order in TypeScript ?
- How to Concatenate Strings in Array in TypeScript ?