页面使用密码保护代码

  代码如下所示:

  <html>

  <head>

  <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />

  <title>密码保护相应页面</title>

  </head>

  <body>

  <SCRIPT LANGUAGE="JavaScript">

  function password() {

  var testV = 1;

  var pass1 = prompt('请输入密码(密码是shenlong):','');

  while (testV < 3) {

  if (!pass1)

  history.go(-1);

  if (pass1 == "shenlong") {

  alert('密码正确!');

  break;

  }

  testV+=1;

  var pass1 =

  prompt('密码错误!请重新输入:');

  }

  if (pass1!="password" & testV ==3)

  history.go(-1);

  return " ";

  }

  document.write(password());

  </SCRIPT>

  </body>

  </html>