If .attr() is run on no elements undefined should be returned (as should be the case...

[jquery.git] / src / core.js

diff --git a/src/core.js b/src/core.js
index 02d8269..ba5d7f5 100644 (file)
--- a/src/core.js
+++ b/src/core.js
@@ -480,6 +480,9 @@ jQuery.extend({
                if ( typeof data !== "string" || !data ) {
                        return null;
                }
+
+               // Make sure leading/trailing whitespace is removed (IE can't handle it)
+               data = jQuery.trim( data );
                
                // Make sure the incoming data is actual JSON
                // Logic borrowed from http://json.org/json2.js
@@ -796,7 +799,7 @@ function access( elems, key, value, exec, fn, pass ) {
        }
        
        // Getting an attribute
-       return length ? fn( elems[0], key ) : null;
+       return length ? fn( elems[0], key ) : undefined;
 }
 
 function now() {