diff --git a/src/selectize.jquery.js b/src/selectize.jquery.js
index d8034d43c..7d7ffc939 100644
--- a/src/selectize.jquery.js
+++ b/src/selectize.jquery.js
@@ -1,61 +1,61 @@
-$.fn.selectize = function(settings_user) {
-	var defaults             = $.fn.selectize.defaults;
-	var settings             = $.extend({}, defaults, settings_user);
-	var attr_data            = settings.dataAttr;
-	var field_label          = settings.labelField;
-	var field_value          = settings.valueField;
-	var field_disabled       = settings.disabledField;
-	var field_optgroup       = settings.optgroupField;
-	var field_optgroup_label = settings.optgroupLabelField;
-	var field_optgroup_value = settings.optgroupValueField;
-
-	/**
-	 * Initializes selectize from a <input type="text"> element.
-	 *
-	 * @param {JQuery} $input
-	 * @param {Object} settings_element
-	 */
-	var init_textbox = function($input, settings_element) {
-		var i, n, values, option;
-
-		var data_raw = $input.attr(attr_data);
-
-		if (!data_raw) {
-			var value = ($input.val() || '').trim();
-			if (!settings.allowEmptyOption && !value.length) return;
-			values = value.split(settings.delimiter);
-			for (i = 0, n = values.length; i < n; i++) {
-				option = {};
-				option[field_label] = values[i];
-				option[field_value] = values[i];
-				settings_element.options.push(option);
-			}
-			settings_element.items = values;
-		} else {
-			settings_element.options = JSON.parse(data_raw);
-			for (i = 0, n = settings_element.options.length; i < n; i++) {
-				settings_element.items.push(settings_element.options[i][field_value]);
-			}
-		}
-	};
-
-	/**
-	 * Initializes selectize from a <select> element.
-	 *
-	 * @param {object} $input
-	 * @param {object} settings_element
-	 */
-	var init_select = function($input, settings_element) {
-		var i, n, tagName, $children, order = 0;
-		var options = settings_element.options;
-		var optionsMap = {};
-
-		var readData = function($el) {
+$.fn.selectize = function (settings_user) {
+  var defaults = $.fn.selectize.defaults;
+  var settings = $.extend({}, defaults, settings_user);
+  var attr_data = settings.dataAttr;
+  var field_label = settings.labelField;
+  var field_value = settings.valueField;
+  var field_disabled = settings.disabledField;
+  var field_optgroup = settings.optgroupField;
+  var field_optgroup_label = settings.optgroupLabelField;
+  var field_optgroup_value = settings.optgroupValueField;
+
+  /**
+   * Initializes selectize from a <input type="text"> element.
+   *
+   * @param {JQuery} $input
+   * @param {Object} settings_element
+   */
+  var init_textbox = function ($input, settings_element) {
+    var i, n, values, option;
+
+    var data_raw = $input.attr(attr_data);
+
+    if (!data_raw) {
+      var value = ($input.val() || '').trim();
+      if (!settings.allowEmptyOption && !value.length) return;
+      values = value.split(settings.delimiter);
+      for (i = 0, n = values.length; i < n; i++) {
+        option = {};
+        option[field_label] = values[i];
+        option[field_value] = values[i];
+        settings_element.options.push(option);
+      }
+      settings_element.items = values;
+    } else {
+      settings_element.options = JSON.parse(data_raw);
+      for (i = 0, n = settings_element.options.length; i < n; i++) {
+        settings_element.items.push(settings_element.options[i][field_value]);
+      }
+    }
+  };
+
+  /**
+   * Initializes selectize from a <select> element.
+   *
+   * @param {object} $input
+   * @param {object} settings_element
+   */
+  var init_select = function ($input, settings_element) {
+    var i, n, tagName, $children, order = 0;
+    var options = settings_element.options;
+    var optionsMap = {};
+
+    var readData = function ($el) {
       var data = attr_data && $el.attr(attr_data);
       var allData = $el.data();
       var obj = {};
 
-			if (typeof data === 'string' && data.length) {
+      if (typeof data === 'string' && data.length) {
         if (isJSON(data)) {
           Object.assign(obj, JSON.parse(data))
         } else {
@@ -66,116 +66,117 @@ $.fn.selectize = function(settings_user) {
 
       Object.assign(obj, allData);
 
-			return obj || null;
-		};
-
-		var addOption = function($option, group) {
-			$option = $($option);
-
-			var value = hash_key($option.val());
-			if (!value && !settings.allowEmptyOption) return;
-
-			// if the option already exists, it's probably been
-			// duplicated in another optgroup. in this case, push
-			// the current group to the "optgroup" property on the
-			// existing option so that it's rendered in both places.
-			if (optionsMap.hasOwnProperty(value)) {
-				if (group) {
-					var arr = optionsMap[value][field_optgroup];
-					if (!arr) {
-						optionsMap[value][field_optgroup] = group;
-					} else if (!Array.isArray(arr)) {
-						optionsMap[value][field_optgroup] = [arr, group];
-					} else {
-						arr.push(group);
-					}
-				}
-				return;
-			}
-
-			var option             = readData($option) || {};
-			option[field_label]    = option[field_label] || $option.text();
-			option[field_value]    = option[field_value] || value;
-			option[field_disabled] = option[field_disabled] || $option.prop('disabled');
+      return obj || null;
+    };
+
+    var addOption = function ($option, group) {
+      $option = $($option);
+
+      var value = hash_key($option.val());
+      if (!value && !settings.allowEmptyOption) return;
+
+      // if the option already exists, it's probably been
+      // duplicated in another optgroup. in this case, push
+      // the current group to the "optgroup" property on the
+      // existing option so that it's rendered in both places.
+      if (optionsMap.hasOwnProperty(value)) {
+        if (group) {
+          var arr = optionsMap[value][field_optgroup];
+          if (!arr) {
+            optionsMap[value][field_optgroup] = group;
+          } else if (!Array.isArray(arr)) {
+            optionsMap[value][field_optgroup] = [arr, group];
+          } else {
+            arr.push(group);
+          }
+        }
+        return;
+      }
+
+      var option = readData($option) || {};
+      option[field_label] = option[field_label] || $option.text();
+      option[field_value] = option[field_value] || value;
+      option[field_disabled] = option[field_disabled] || $option.prop('disabled');
       option[field_optgroup] = option[field_optgroup] || group;
       option.styles = $option.attr('style') || '';
-			option.classes = $option.attr('class') || '';
-
-			optionsMap[value] = option;
-			options.push(option);
-
-			if ($option.is(':selected')) {
-				settings_element.items.push(value);
-			}
-		};
-
-		var addGroup = function($optgroup) {
-			var i, n, id, optgroup, $options;
-
-			$optgroup = $($optgroup);
-			id = $optgroup.attr('label');
-
-			if (id) {
-				optgroup = readData($optgroup) || {};
-				optgroup[field_optgroup_label] = id;
-				optgroup[field_optgroup_value] = id;
-				optgroup[field_disabled] = $optgroup.prop('disabled');
-				settings_element.optgroups.push(optgroup);
-			}
-
-			$options = $('option', $optgroup);
-			for (i = 0, n = $options.length; i < n; i++) {
-				addOption($options[i], id);
-			}
-		};
-
-		settings_element.maxItems = $input.attr('multiple') ? null : 1;
-
-		$children = $input.children();
-		for (i = 0, n = $children.length; i < n; i++) {
-			tagName = $children[i].tagName.toLowerCase();
-			if (tagName === 'optgroup') {
-				addGroup($children[i]);
-			} else if (tagName === 'option') {
-				addOption($children[i]);
-			}
-		}
-	};
-
-	return this.each(function() {
-		if (this.selectize) return;
-
-		var instance;
-		var $input = $(this);
-		var tag_name = this.tagName.toLowerCase();
-		var placeholder = $input.attr('placeholder') || $input.attr('data-placeholder');
-		if (!placeholder && !settings.allowEmptyOption) {
-			placeholder = $input.children('option[value=""]').text();
-		}
-		if (settings.allowEmptyOption && settings.showEmptyOptionInDropdown && !$input.children('option[value=""]').length) {
-			var input_html = $input.html();
-			$input.html('<option value="">'+settings.emptyOptionLabel+'</option>'+input_html);
-		}
-
-		var settings_element = {
-			'placeholder' : placeholder,
-			'options'     : [],
-			'optgroups'   : [],
-			'items'       : []
-		};
-
-		if (tag_name === 'select') {
-			init_select($input, settings_element);
-		} else {
-			init_textbox($input, settings_element);
-		}
-
-		instance = new Selectize($input, $.extend(true, {}, defaults, settings_element, settings_user));
-		instance.settings_user = settings_user;
-	});
+      option.classes = $option.attr('class') || '';
+
+      optionsMap[value] = option;
+      options.push(option);
+
+      if ($option.is(':selected')) {
+        settings_element.items.push(value);
+      }
+    };
+
+    var addGroup = function ($optgroup) {
+      var i, n, id, optgroup, $options;
+
+      $optgroup = $($optgroup);
+      id = $optgroup.attr('label');
+
+      if (id) {
+        optgroup = readData($optgroup) || {};
+        optgroup[field_optgroup_label] = id;
+        optgroup[field_optgroup_value] = id;
+        optgroup[field_disabled] = $optgroup.prop('disabled');
+        settings_element.optgroups.push(optgroup);
+      }
+
+      $options = $('option', $optgroup);
+      for (i = 0, n = $options.length; i < n; i++) {
+        addOption($options[i], id);
+      }
+    };
+
+    settings_element.maxItems = $input.attr('multiple') ? null : 1;
+
+    $children = $input.children();
+    for (i = 0, n = $children.length; i < n; i++) {
+      tagName = $children[i].tagName.toLowerCase();
+      if (tagName === 'optgroup') {
+        addGroup($children[i]);
+      } else if (tagName === 'option') {
+        addOption($children[i]);
+      }
+    }
+  };
+
+  return this.each(function () {
+    if (this.selectize) return;
+
+    var instance;
+    var $input = $(this);
+    var tag_name = this.tagName.toLowerCase();
+    var placeholder = $input.attr('placeholder') || $input.attr('data-placeholder');
+    if (!placeholder && !settings.allowEmptyOption) {
+      placeholder = $input.children('option[value=""]').text();
+    }
+    if (settings.allowEmptyOption && settings.showEmptyOptionInDropdown && !$input.children('option[value=""]').length) {
+      var input_html = $input.html();
+      var label = escape_html(settings.emptyOptionLabel || '--');
+      $input.html('<option value="">' + label + '</option>' + input_html);
+    }
+
+    var settings_element = {
+      'placeholder': placeholder,
+      'options': [],
+      'optgroups': [],
+      'items': []
+    };
+
+    if (tag_name === 'select') {
+      init_select($input, settings_element);
+    } else {
+      init_textbox($input, settings_element);
+    }
+
+    instance = new Selectize($input, $.extend(true, {}, defaults, settings_element, settings_user));
+    instance.settings_user = settings_user;
+  });
 };
 
 $.fn.selectize.defaults = Selectize.defaults;
 $.fn.selectize.support = {
-	validity: SUPPORTS_VALIDITY_API
+  validity: SUPPORTS_VALIDITY_API
 };