average()

Average the values in a data set.

• Author: Allan Jardine
• Requires: DataTables 1.10+

It can sometimes be useful to get the average of data in an API result set, be it from a column, or a collection of cells. This method provides exactly that ability.

Use

This plug-in can be obtained and used in multiple different ways.

Browser

This plug-in is available on the DataTables CDN:

The plug-in will then automatically register itself against a global DataTables instance. This file can also be used if you are using an AMD loader such as Require.js.

Note that if you are using multiple plug-ins, it can be beneficial in terms of performance to combine the plug-ins into a single file and host it on your own server, rather than making multiple requests to the DataTables CDN.

NPM

The plug-ins are all available on NPM (which can also be used with Yarn or any other Javascript package manager) as part of the datatables.net-plugins package. To use this plug-in, first install the plug-ins package:

npm install datatables.net-plugins

ES modules

Then, if you are using ES modules, import datatables.net, any other DataTables extensions you need, and the plug-in:

import DataTable from 'datatables.net';
import 'datatables.net-plugins/api/average().mjs';

CommonJS

If you are using a CommonJS loader for Node (e.g. with older versions of Webpack, or non-module Node code) use the following method to require the plug-in:

var $ = require('jquery');
var DataTable = require('datatables.net');
require('datatables.net-plugins/api/average().js');

Examples

// Average a column
  var table = $('#example').DataTable();
  table.column( 3 ).data().average();

// Average two cells
  var table = $('#example').DataTable();
  table.cells( 0, [3,4] ).data().average();

Version control

If you have any ideas for how this plug-in can be improved, or spot anything that is in error, it is available on GitHub and pull requests are very welcome!

• This plug-in: average().js
• Full DataTables plug-ins repository: DataTables/Plugins