How to find the average of es6 Array

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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