Make sure that the body element exists before doing the body selector optimization...

diff --git a/src/core.js b/src/core.js
index 6c6d006..cc92138 100644 (file)
--- a/src/core.js
+++ b/src/core.js
@@ -91,7 +91,7 @@ jQuery.fn = jQuery.prototype = {
                }
                
                // The body element only exists once, optimize finding it
-               if ( selector === "body" && !context ) {
+               if ( selector === "body" && !context && document.body ) {
                        this.context = document;
                        this[0] = document.body;
                        this.selector = "body";