TypeScript | Array lastIndexOf() Method
Last Updated :
18 Jun, 2020
The Array.lastIndexOf() is an inbuilt TypeScript function which is used to get the last index at which a given element can be found in the array.
Syntax:
array.lastIndexOf(searchElement[, fromIndex])
Parameter: This method accepts two parameter as mentioned above and described below:
- searchElement : This parameter is the element to locate in the array.
- fromIndex : This parameter is the index at which to start searching backwards.
Return Value: This method returns the index of the found element from the last.
Below examples illustrate the Array lastIndexOf() method in TypeScript.
Example 1:
JavaScript
<script>
var arr = [ 11, 89, 23, 7, 98 ];
var val = arr.lastIndexOf(7)
console.log( val );
</script>
|
Output:
3
Example 2:
JavaScript
<script>
var arr = [ 'a' , 'b' , 'c' , 'a' , 'e' ];
var val = arr.lastIndexOf( "a" )
var val1 = arr.lastIndexOf( "c" )
console.log(val);
console.log(val1);
</script>
|
Output:
3
2
Share your thoughts in the comments
Please Login to comment...