Close GH-920: Typescript-backbone: do not create item on empty input. Fixes #919

labs/architecture-examples/typescript-backbone/js/app.js

@@ -179,14 +179,14 @@ var TodoView = (function (_super) {
 
     // If you hit `enter`, we're through editing the item.
     TodoView.prototype.updateOnEnter = function (e) {
-        if (e.which == TodoView.ENTER_KEY)
+        if (e.which === TodoView.ENTER_KEY)
             this.close();
     };
 
     // If you're pressing `escape` we revert your change by simply leaving
     // the `editing` state.
     TodoView.prototype.revertOnEscape = function (e) {
-        if (e.which == TodoView.ESC_KEY) {
+        if (e.which === TodoView.ESC_KEY) {
             this.$el.removeClass('editing');
 
             // Also reset the hidden input back to the original value.
@@ -285,10 +285,10 @@ var AppView = (function (_super) {
     // If you hit return in the main input field, create new **Todo** model,
     // persisting it to *localStorage*.
     AppView.prototype.createOnEnter = function (e) {
-        if (e.keyCode != 13)
-            return;
+        if (e.which === TodoView.ENTER_KEY && this.input.val().trim()) {
             Todos.create(this.newAttributes());
             this.input.val('');
+        }
     };
 
     // Clear all done todo items, destroying their models.

labs/architecture-examples/typescript-backbone/js/app.ts

@@ -238,13 +238,13 @@ class TodoView extends Backbone.View {
 
 	// If you hit `enter`, we're through editing the item.
 	updateOnEnter(e) {
-		if (e.which == TodoView.ENTER_KEY) this.close();
+		if (e.which === TodoView.ENTER_KEY) this.close();
 	}
 
 	// If you're pressing `escape` we revert your change by simply leaving
 	// the `editing` state.
 	revertOnEscape(e) {
-		if (e.which == TodoView.ESC_KEY) {
+		if (e.which === TodoView.ESC_KEY) {
 			this.$el.removeClass('editing');
 			// Also reset the hidden input back to the original value.
 			this.input.val(this.model.get('content'));
@@ -348,10 +348,11 @@ class AppView extends Backbone.View {
 	// If you hit return in the main input field, create new **Todo** model,
 	// persisting it to *localStorage*.
 	createOnEnter(e) {
-		if (e.keyCode != 13) return;
+		if (e.which === TodoView.ENTER_KEY && this.input.val().trim()) {
 			Todos.create(this.newAttributes());
 			this.input.val('');
 		}
+	}
 
 	// Clear all done todo items, destroying their models.
 	clearCompleted() {