禁止html缓存
<meta http-equiv="Expires" content="0"> <meta http-equiv="Pragma" content="no-cache"> <meta http-equiv="Cache-control" content="no-cache"> <meta http-equiv="Cache" content="no-cache">
<meta http-equiv="Expires" content="0"> <meta http-equiv="Pragma" content="no-cache"> <meta http-equiv="Cache-control" content="no-cache"> <meta http-equiv="Cache" content="no-cache">
<meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0,user-scalable=0" />