jquery.ui.spinner.js in jquery-ui-rails-4.2.1

- old
+ new

@@ -1,14 +1,14 @@
 //= require jquery.ui.core
 //= require jquery.ui.widget
 //= require jquery.ui.button
 
 /*!
- * jQuery UI Spinner 1.10.3
+ * jQuery UI Spinner 1.10.4
  * http://jqueryui.com
  *
- * Copyright 2013 jQuery Foundation and other contributors
+ * Copyright 2014 jQuery Foundation and other contributors
  * Released under the MIT license.
  * http://jquery.org/license
  *
  * http://api.jqueryui.com/spinner/
  *
@@ -29,11 +29,11 @@
 		}
 	};
 }
 
 $.widget( "ui.spinner", {
-	version: "1.10.3",
+	version: "1.10.4",
 	defaultElement: "<input>",
 	widgetEventPrefix: "spin",
 	options: {
 		culture: null,
 		icons: {
@@ -57,11 +57,15 @@
 		// handle string values that need to be parsed
 		this._setOption( "max", this.options.max );
 		this._setOption( "min", this.options.min );
 		this._setOption( "step", this.options.step );
 
-		// format the value, but don't constrain
-		this._value( this.element.val(), true );
+		// Only format if there is a value, prevents the field from being marked
+		// as invalid in Firefox, see #9573.
+		if ( this.value() !== "" ) {
+			// Format the value, but don't constrain.
+			this._value( this.element.val(), true );
+		}
 
 		this._draw();
 		this._on( this._events );
 		this._refresh();
 