ES6 - Array Method reduce()


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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 );     

Output

total is : 6
es6_arrays.htm
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