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-rw-r--r--src/core.js31
1 files changed, 18 insertions, 13 deletions
diff --git a/src/core.js b/src/core.js
index 5564a9870..2f5908b55 100644
--- a/src/core.js
+++ b/src/core.js
@@ -488,27 +488,32 @@ jQuery.extend({
},
parseJSON: function( data ) {
- if ( !data || typeof data !== "string") {
- return null;
- }
-
- // Make sure leading/trailing whitespace is removed (IE can't handle it)
- data = jQuery.trim( data );
-
// Attempt to parse using the native JSON parser first
if ( window.JSON && window.JSON.parse ) {
return window.JSON.parse( data );
}
- // Make sure the incoming data is actual JSON
- // Logic borrowed from http://json.org/json2.js
- if ( rvalidchars.test( data.replace( rvalidescape, "@" )
- .replace( rvalidtokens, "]" )
- .replace( rvalidbraces, "")) ) {
+ if ( data === null ) {
+ return data;
+ }
- return ( new Function( "return " + data ) )();
+ if ( typeof data === "string" ) {
+
+ // Make sure leading/trailing whitespace is removed (IE can't handle it)
+ data = jQuery.trim( data );
+ if ( data ) {
+ // Make sure the incoming data is actual JSON
+ // Logic borrowed from http://json.org/json2.js
+ if ( rvalidchars.test( data.replace( rvalidescape, "@" )
+ .replace( rvalidtokens, "]" )
+ .replace( rvalidbraces, "")) ) {
+
+ return ( new Function( "return " + data ) )();
+ }
+ }
}
+
jQuery.error( "Invalid JSON: " + data );
},