Test non-existent divs

[dygraphs.git] / src / dygraph.js

diff --git a/src/dygraph.js b/src/dygraph.js
index 7121458..735ddca 100644 (file)
--- a/src/dygraph.js
+++ b/src/dygraph.js
@@ -403,7 +403,7 @@ Dygraph.prototype.__init__ = function(div, file, attrs) {
   }
 
   if (!div) {
-    throw 'Constructing dygraph with a non-existent div!';
+    throw new Error('Constructing dygraph with a non-existent div!');
   }
 
   // Copy the important bits into the object