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Plugins/api/sum().js

101 lines
2.7 KiB
JavaScript

/*! © SpryMedia Ltd - datatables.net/license */
(function( factory ){
if ( typeof define === 'function' && define.amd ) {
// AMD
define( ['jquery', 'datatables.net'], function ( $ ) {
return factory( $, window, document );
} );
}
else if ( typeof exports === 'object' ) {
// CommonJS
var jq = require('jquery');
var cjsRequires = function (root, $) {
if ( ! $.fn.dataTable ) {
require('datatables.net')(root, $);
}
};
if (typeof window !== 'undefined') {
module.exports = function (root, $) {
if ( ! root ) {
// CommonJS environments without a window global must pass a
// root. This will give an error otherwise
root = window;
}
if ( ! $ ) {
$ = jq( root );
}
cjsRequires( root, $ );
return factory( $, root, root.document );
};
}
else {
cjsRequires( window, jq );
module.exports = factory( jq, window, window.document );
}
}
else {
// Browser
factory( jQuery, window, document );
}
}(function( $, window, document, undefined ) {
'use strict';
var DataTable = $.fn.dataTable;
/**
* Fairly simply, this plug-in will take the data from an API result set
* and sum it, returning the summed value. The data can come from any data
* source, including column data, cells or rows.
*
* Note that it will attempt to 'deformat' any string based data that is passed
* into it - i.e. it will strip any non-numeric characters in order to make a
* best effort attempt to sum all data types. This can be useful when working
* with formatting numbers such as currency. However the trade-off is that no
* error is thrown if non-numeric data is passed in. You should be aware of this
* in case unexpected values are returned - likely the input data is not what is
* expected.
*
* @name sum()
* @summary Sum the values in a data set.
* @author [Allan Jardine](http://datatables.net)
* @requires DataTables 1.10+
*
* @returns {Number} Summed value
*
* @example
* // Simply get the sum of a column
* var table = $('#example').DataTable();
* table.column( 3 ).data().sum();
*
* @example
* // Insert the sum of a column into the columns footer, for the visible
* // data on each draw
* $('#example').DataTable( {
* drawCallback: function () {
* var api = this.api();
* $( api.table().footer() ).html(
* api.column( 4, {page:'current'} ).data().sum()
* );
* }
* } );
*/
DataTable.Api.register('sum()', function () {
return this.flatten().reduce(function (a, b) {
if (typeof a === 'string') {
a = a.replace(/[^\d.-]/g, '') * 1;
}
if (typeof b === 'string') {
b = b.replace(/[^\d.-]/g, '') * 1;
}
return a + b;
}, 0);
});
return DataTable;
}));