How to Iterate Over an Array in TypeScript


How to Iterate Over an Array in TypeScript ?

Answer

To iterate over an array in TypeScript, you can use a for loop or array methods like forEach or map.



✐ Examples

1 Iterate Over Integer Array

In this example,

  1. We create an integer array named numbers with some values.
  2. We use a for loop to iterate over each element of the array and print the elements.

TypeScript Program

const numbers: number[] = [1, 2, 3, 4, 5];
for (let i = 0; i < numbers.length; i++) {
    console.log(numbers[i]);
}

Output

1
2
3
4
5

2 Iterate Over String Array

In this example,

  1. We create a string array named names with some strings.
  2. We use the forEach method to iterate over each element of the array and print the elements.

TypeScript Program

const names: string[] = ['Alice', 'Bob', 'Charlie'];
names.forEach(name => console.log(name));

Output

Alice
Bob
Charlie

Summary

In this tutorial, we learned How to Iterate Over an Array in TypeScript language with well detailed examples.




More TypeScript Arrays Tutorials

  1. How to Declare an Array in TypeScript ?
  2. How to Initialize an Array in TypeScript ?
  3. How to Access Array Elements in TypeScript ?
  4. How to Access Array Elements using Index in TypeScript ?
  5. How to get First Element in Array in TypeScript ?
  6. How to get Last Element in Array in TypeScript ?
  7. How to check if an Array is Empty in TypeScript ?
  8. How to check if an Array is Not Empty in TypeScript ?
  9. How to get Sub Array in TypeScript ?
  10. How to Get Array Length in TypeScript ?
  11. How to Iterate Over an Array in TypeScript ?
  12. How to Iterate Over an Array in Reverse Order in TypeScript ?
  13. How to get the Index of Specified Element in an Array in TypeScript ?
  14. How to check if Specified Element is present in the Array in TypeScript ?
  15. How to count the Number of Occurrences of Specified Element in the Array in TypeScript ?
  16. How to Sort an Array in TypeScript ?
  17. How to Sort an Array in Ascending Order in TypeScript ?
  18. How to Sort an Array in Descending Order in TypeScript ?
  19. How to create a Two Dimensional Array in TypeScript ?
  20. How to Iterate over a Two Dimensional Array in TypeScript ?
  21. How to create a Three Dimensional Array in TypeScript ?
  22. How to Copy an Array in TypeScript ?
  23. How to Split an Array in TypeScript ?
  24. How to Join Arrays in TypeScript ?
  25. How to check if Two Arrays are Equal in TypeScript ?
  26. How to check if Two Arrays have Same Elements (Regardless of Order) in TypeScript ?
  27. How to Convert an Array of Integers to an Array of Strings in TypeScript ?
  28. How to Convert an Array of Strings to an Array of Integers in TypeScript ?
  29. How to Reverse an Array in TypeScript ?
  30. How to Shuffle an Array in TypeScript ?
  31. How to Rotate Elements in an Array in TypeScript ?
  32. How to Filter Elements of an Array based on a Condition in TypeScript ?
  33. How to Declare an Integer Array in TypeScript ?
  34. How to Declare a Float Array in TypeScript ?
  35. How to Declare a String Array in TypeScript ?
  36. How to Remove Duplicates in an Array in TypeScript ?
  37. How to Remove Specific Element from an Array in TypeScript ?
  38. How to Remove Element from Array based on a Condition in TypeScript ?
  39. How to Sort a String Array in Dictionary Order in TypeScript ?
  40. How to Concatenate Strings in Array in TypeScript ?