Adding support for bower and reorganizing so when its used via bower it will be manageable for a dev.

bower_components/datatables-plugins/features/alphabetSearch/dataTables.alphabetSearch.js

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+/*! AlphabetSearch for DataTables v1.0.0
+ * 2014 SpryMedia Ltd - datatables.net/license
+ */
+
+/**
+ * @summary     AlphabetSearch
+ * @description Show an set of alphabet buttons alongside a table providing
+ *     search input options
+ * @version     1.0.0
+ * @file        dataTables.alphabetSearch.js
+ * @author      SpryMedia Ltd (www.sprymedia.co.uk)
+ * @contact     www.sprymedia.co.uk/contact
+ * @copyright   Copyright 2014 SpryMedia Ltd.
+ * 
+ * License      MIT - http://datatables.net/license/mit
+ *
+ * For more detailed information please see:
+ *     http://datatables.net/blog/2014-09-22
+ */
+(function(){
+
+
+// Search function
+$.fn.dataTable.Api.register( 'alphabetSearch()', function ( searchTerm ) {
+	this.iterator( 'table', function ( context ) {
+		context.alphabetSearch = searchTerm;
+	} );
+
+	return this;
+} );
+
+// Recalculate the alphabet display for updated data
+$.fn.dataTable.Api.register( 'alphabetSearch.recalc()', function ( searchTerm ) {
+	this.iterator( 'table', function ( context ) {
+		draw(
+			new $.fn.dataTable.Api( context ),
+			$('div.alphabet', this.table().container())
+		);
+	} );
+
+	return this;
+} );
+
+
+// Search plug-in
+$.fn.dataTable.ext.search.push( function ( context, searchData ) {
+	// Ensure that there is a search applied to this table before running it
+	if ( ! context.alphabetSearch ) {
+		return true;
+	}
+
+	if ( searchData[0].charAt(0) === context.alphabetSearch ) {
+		return true;
+	}
+
+	return false;
+} );
+
+
+// Private support methods
+function bin ( data ) {
+	var letter, bins = {};
+
+	for ( var i=0, ien=data.length ; i<ien ; i++ ) {
+		letter = data[i].charAt(0).toUpperCase();
+
+		if ( bins[letter] ) {
+			bins[letter]++;
+		}
+		else {
+			bins[letter] = 1;
+		}
+	}
+
+	return bins;
+}
+
+function draw ( table, alphabet )
+{
+	alphabet.empty();
+	alphabet.append( 'Search: ' );
+
+	var columnData = table.column(0).data();
+	var bins = bin( columnData );
+
+	$('<span class="clear active"/>')
+		.data( 'letter', '' )
+		.data( 'match-count', columnData.length )
+		.html( 'None' )
+		.appendTo( alphabet );
+
+	for ( var i=0 ; i<26 ; i++ ) {
+		var letter = String.fromCharCode( 65 + i );
+
+		$('<span/>')
+			.data( 'letter', letter )
+			.data( 'match-count', bins[letter] || 0 )
+			.addClass( ! bins[letter] ? 'empty' : '' )
+			.html( letter )
+			.appendTo( alphabet );
+	}
+
+	$('<div class="alphabetInfo"></div>')
+		.appendTo( alphabet );
+}
+
+
+$.fn.dataTable.AlphabetSearch = function ( context ) {
+	var table = new $.fn.dataTable.Api( context );
+	var alphabet = $('<div class="alphabet"/>');
+
+	draw( table, alphabet );
+
+	// Trigger a search
+	alphabet.on( 'click', 'span', function () {
+		alphabet.find( '.active' ).removeClass( 'active' );
+		$(this).addClass( 'active' );
+
+		table
+			.alphabetSearch( $(this).data('letter') )
+			.draw();
+	} );
+
+	// Mouse events to show helper information
+	alphabet
+		.on( 'mouseenter', 'span', function () {
+			alphabet
+				.find('div.alphabetInfo')
+				.css( {
+					opacity: 1,
+					left: $(this).position().left,
+					width: $(this).width()
+				} )
+				.html( $(this).data('match-count') );
+		} )
+		.on( 'mouseleave', 'span', function () {
+			alphabet
+				.find('div.alphabetInfo')
+				.css('opacity', 0);
+		} );
+
+	// API method to get the alphabet container node
+	this.node = function () {
+		return alphabet;
+	};
+};
+
+$.fn.DataTable.AlphabetSearch = $.fn.dataTable.AlphabetSearch;
+
+
+// Register a search plug-in
+$.fn.dataTable.ext.feature.push( {
+	fnInit: function ( settings ) {
+		var search = new $.fn.dataTable.AlphabetSearch( settings );
+		return search.node();
+	},
+	cFeature: 'A'
+} );
+
+
+}());
+