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Diffstat (limited to 'src/ajax/jsonp.js')
| -rw-r--r-- | src/ajax/jsonp.js | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/ajax/jsonp.js b/src/ajax/jsonp.js index a04898f67..f469344e0 100644 --- a/src/ajax/jsonp.js +++ b/src/ajax/jsonp.js @@ -64,8 +64,14 @@ jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) { // Clean-up function (fires after converters) jqXHR.always(function() { - // Restore preexisting value - window[ callbackName ] = overwritten; + // If previous value didn't exist - remove it + if ( overwritten === undefined ) { + jQuery( window ).removeProp( callbackName ); + + // Otherwise restore preexisting value + } else { + window[ callbackName ] = overwritten; + } // Save back as free if ( s[ callbackName ] ) { |