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This article mainly introduces the es6 array how to average the relevant knowledge, the content is detailed and easy to understand, the operation is simple and fast, has a certain reference value, I believe everyone will read this es6 array how to average the article will have some gains, let's take a look at it.

Methods: 1. Use the "arr.reduce(function(p,c){return p+c;})" statement to calculate the sum of all elements in the array;2. Use the "arr.length" statement to calculate the number of elements in the array;3. Use the "element and/element number" statement to calculate the average number of elements in the array.

Operating environment of this tutorial: Windows 7 system, ECMAScript version 6, Dell G3 computer.

A method of calculating the average number of es6 arrays

Calculate the sum of all elements in an array using reduce().

var arr = [1,2,3,4,5,6,7,8,9,10];console.log(arr);var r = arr.reduce(function(pre, curr) { return pre + curr;});console.log("sum of array elements is: "+r);

2. Use the length attribute to get the number of elements in the array, that is, the array length.

var len=arr.length;console.log("Number of array elements is: "+len);

Divide the sum of elements by the number of elements to calculate the average value.

var average=r/len;console.log("array average is: "+average);

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