Fixing error code returned by xpath finder if the document is lot loa…

…ded yet
alchaochao · Mar 16, 2015 · bb13f6d · bb13f6d
1 parent d920111
commit bb13f6d
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/javascript/atoms/locators/xpath.js b/javascript/atoms/locators/xpath.js
@@ -88,6 +88,11 @@ bot.locators.xpath.DEFAULT_RESOLVER_ = (function() {
 bot.locators.xpath.evaluate_ = function(node, path, resultType) {
   var doc = goog.dom.getOwnerDocument(node);
 
+  if (!doc.documentElement) {
+    // document is not loaded yet
+    return null;
+  }
+
   // Let the wgxpath library be compiled away unless we are on IE or Android.
   // TODO: Restrict this to just IE when we drop support for Froyo.
   if (goog.userAgent.IE || goog.userAgent.product.ANDROID) {