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<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>禁止表单输入某种字符</title> </head> <body> <input οnkeyup="this.value=this.value.replace(/[\*\^\|]+/,'');" value="" size="20" /> </body> </html>