tsorter.js

/*!
 * tsorter 2.0.0 - Copyright 2015 Terrill Dent, http://terrill.ca
 * JavaScript HTML Table Sorter
 * Released under MIT license, http://terrill.ca/sorting/tsorter/LICENSE
 */
var tsorter = (function()
{
    'use strict';

    var sorterPrototype,
        addEvent,
        removeEvent,
        hasEventListener = !!document.addEventListener;

    if( !Object.create ){
        // Define Missing Function
        Object.create = function( prototype ) {
            var Obj = function(){return undefined;};
            Obj.prototype = prototype;
            return new Obj();
        };
    }

    // Cross Browser event binding
    addEvent = function( element, eventName, callback ) {
        if( hasEventListener ) {
            element.addEventListener(eventName, callback, false );
        } else {
            element.attachEvent( 'on' + eventName, callback);
        }
    };

    // Cross Browser event removal
    removeEvent = function( element, eventName, callback ) {
        if( hasEventListener ) {
            element.removeEventListener(eventName, callback, false );
        } else {
            element.detachEvent( 'on' + eventName, callback);
        }
    };

    sorterPrototype = {

        getCell: function(row)
        {
            var that = this;
            return that.trs[row].cells[that.column];
        },

        /* SORT
         * Sorts a particular column. If it has been sorted then call reverse
         * if not, then use quicksort to get it sorted.
         * Sets the arrow direction in the headers.
         * @param oTH - the table header cell (<th>) object that is clicked
         */
        sort: function( e )
        {
            var that = this,
                th = e.target;

            // TODO: make sure target 'th' is not a child element of a <th>
            //  We can't use currentTarget because of backwards browser support
            //  IE6,7,8 don't have it.

            // set the data retrieval function for this column
            that.column = th.cellIndex;
            that.get = that.getAccessor( th.getAttribute('data-tsorter') );

            if( that.prevCol === that.column )
            {