Javascript Reduceright() Function

The reduceright() function of array object apply a function simultaneously against two values of the array (from right-to-left) as to reduce it to a single value. Use it for example to perform operation on each element of an array.

Syntax

arr.reduceRight(callbackfn[, initialValue])

Javascript Reduceright() Function Example1

<html>
<head>
<script type="text/javascript">
// Create an array.
var arr = [0, 1, 2, 3, 4, 5];
var value = arr.reduceRight(function(a, b) {
  return a + b;
});
document.write(value);
</script>
</head>
<body>
</body>
</html>

This will produce following result

code>15

Javascript Reduceright() Function Example2

<html>
<head>
<script type="text/javascript">
// Create an array.
var arr = [[1, 2], [3, 4], [5, 6]];

var arr_of_arr = arr.reduce(function(a, b) {
  return a.concat(b);
});
document.write(arr_of_arr);
</script>
</head>
<body>
</body>
</html>

This will produce following result

//Now array will contain
[5, 6, 3, 4, 1, 2]

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Javascript Reduceright() Function

Javascript Reduceright() Function Example1

Javascript Reduceright() Function Example2

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