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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>本教程(w3big.com)</title> <script src="http://cdn.static.w3big.com/libs/jquery/1.10.2/jquery.min.js"></script> </head> <body> <div></div> <script> $(function () { var div = $( "<div />" ); div.promise().done(function( arg1 ) { //弹出 "true" alert( this === div && arg1 === div ); }); }) </script> </body> </html>