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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> <script> $(function () { $.each( [ "a", "b", "c" ], function( i, l ){ alert( "下标 #" + i + ": " + l ); }); }) </script> </body> </html>