jQuery delete attribute
$().removeAttr(attribute name); //Delete attribute
<!DOCTYPE html> <html> <head> <title>php.cn</title> <meta charset="utf-8" /> <script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script> <script> function get(){ $("#in").removeAttr('value'); } </script> </head> <body> <input type="text" value="你好" id="in"/> <input type="button" value="删除属性" onclick="get()"> </body> </html>