reduce() method applies a function simultaneously against two values of the array (from left-to-right) as to reduce it to a single value.
Syntax
array.reduce(callback[, initialValue]);
Parameter Details
- callback − Function to execute on each value in the array.
- initialValue − Object to use as the first argument to the first call of the callback.
Return Value
Returns the reduced single value of the array.
Example
var total = [0, 1, 2, 3].reduce(function(a, b){ return a + b; });
console.log("total is : " + total );
On compiling, it will generate the same code in JavaScript.
Its output is as follows −
total is : 6
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