The Array.unshift() is an inbuilt TypeScript function that is used to add one or more elements to the beginning of an array and returns the new length of the array.
Syntax:
array.unshift( element1, ..., elementN )
Parameter: This method accepts n number of similar elements.
- element1, …, elementN : This parameter is the elements to add to the front of the array.
Return Value: This method returns the length of the new array.
Below example illustrate the String unshift() method in TypeScriptJS:
Example 1:
JavaScript
<script> // Driver code var arr = [ 11, 89, 23, 7, 98 ]; // use of unshift() method var string= arr.unshift(11); // printing console.log( string);</script> |
Output:
6
Example 2:
JavaScript
<script> // Driver code var arr = ["G", "e", "e", "k", "s", "f", "o", "r", "g", "e", "e", "k", "s"]; var val; // use of unshift() method val = arr.unshift("f"); console.log( val ); console.log( arr );</script> |
Output:
14 ["f","G","e","e","k","s","f","o","r","g","e","e","k","s"]
