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Counting elements of an array using a recursive function in JS?
The recursive function calls itself with some base condition. Let’s say the following is our array with marks −
var listOfMarks=[56,78,90,94,91,82,77];
Following is the code to get the count of array elements −
Example
function countNumberOfElementsUsingRecursive(listOfMarks) {
if (listOfMarks.length == 0) {
return 0;
}
return 1 +
countNumberOfElementsUsingRecursive(listOfMarks.slice(1));
}
var listOfMarks=[56,78,90,94,91,82,77];
console.log("The array=");
console.log(listOfMarks);
var numberOfElements=countNumberOfElementsUsingRecursive(listOfMarks);
console.log("The Number of elements = "+numberOfElements);To run the above program, you need to use the following command −
node fileName.js.
Here, my file name is demo110.js.
Output
This will produce the following output −
PS C:\Users\Amit\JavaScript-code> node demo110.js The array=[ 56, 78, 90, 94, 91, 82, 77 ] The Number of elements = 7
Updated on: 09-Sep-2020
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