Check if other bindings exist before trying to attach

dist/js/bootstrap-multiselect.js

@@ -19,6 +19,7 @@
 
                 $element.multiselect(config);
 
+                if (allBindings.has('options')) {
                     var options = allBindings.get('options');
                     if (ko.isObservable(options)) {
                         ko.computed({
@@ -34,10 +35,12 @@
                             disposeWhenNodeIsRemoved: element
                         });
                     }
+                }
 
                 //value and selectedOptions are two-way, so these will be triggered even by our own actions.
                 //It needs some way to tell if they are triggered because of us or because of outside change.
                 //It doesn't loop but it's a waste of processing.
+                if (allBindings.has('value')) {
                     var value = allBindings.get('value');
                     if (ko.isObservable(value)) {
                         ko.computed({
@@ -50,9 +53,11 @@
                             disposeWhenNodeIsRemoved: element
                         }).extend({ rateLimit: 100, notifyWhenChangesStop: true });
                     }
+                }
 
                 //Switched from arrayChange subscription to general subscription using 'refresh'.
                 //Not sure performance is any better using 'select' and 'deselect'.
+                if (allBindings.has('selectedOptions')) {
                     var selectedOptions = allBindings.get('selectedOptions');
                     if (ko.isObservable(selectedOptions)) {
                         ko.computed({
@@ -65,6 +70,7 @@
                             disposeWhenNodeIsRemoved: element
                         }).extend({ rateLimit: 100, notifyWhenChangesStop: true });
                     }
+                }
 
                 ko.utils.domNodeDisposal.addDisposeCallback(element, function() {
                     $element.multiselect('destroy');