Fix tabbing through date input so calendar automatically hides

Fix backspace & delete button to always clear the value

Author: jarrettv

src/dateinput/dateinput.js

@@ -306,14 +306,14 @@
 				if (e.ctrlKey) { return true; }				
 				var key = e.keyCode;			 
 
-				// backspace clears the value
-				if (key == 8) {
+				// backspace or delete clears the value
+				if (key == 8 || key == 9) {
 					input.val("");
 					return self.hide(e);	
 				}
 
-				// esc key
-				if (key == 27) { return self.hide(e); }						
+				// esc or tab key exits
+				if (key == 27 || key == 9) { return self.hide(e); }						
 
 				if ($(KEYS).index(key) >= 0) {
 
@@ -634,11 +634,13 @@
 					e.type = "onHide";
 					fire.trigger(e);
 
-					$(document).unbind("click.d").unbind("keydown.d");
-					
 					// cancelled ?
 					if (e.isDefaultPrevented()) { return; }
 
+					$(document).unbind("click.d").unbind("keydown.d");
+					input.focus();
+					input.select();
+					
 					// do the hide
 					root.hide();
 					opened = false;
@@ -690,20 +692,19 @@
 
 			var key = e.keyCode;
 
-			// open dateinput with navigation keyw
+			// open dateinput with navigation keys, or clear value on backspace or delete
 			if (!opened &&  $(KEYS).index(key) >= 0) {
 				self.show(e);
 				return e.preventDefault();
-			} 
+			} else if (key == 8 || key == 46) {
+				input.val("");
+			}
 
 			// allow tab
 			return e.shiftKey || e.ctrlKey || e.altKey || key == 9 ? true : e.preventDefault();   
 
-		});
-
-	  // hide when focus is lost
-	  input.bind("blur", self.hide);
-  		
+		}); 
+		
 		// initial value 		
 		if (parseDate(input.val())) { 
 			select(value, conf);