密码保护

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head>
  <title>标题页</title>
  <SCRIPT LANGUAGE="JavaScript">
  function password()
  {
  var inputCount = 1;
  //弹出密码输入框
  var pass1 = prompt('请输入密码(密码默认为password):','');
  //判断输入密码是否超过3次
  while (inputCount < 3) {
  if (!pass1)
  history.go(-1);
  if (pass1 == "password") {
  alert('密码正确!');
  break;
  }
  inputCount+=1;
  //弹出错误信息提示
  var pass1 = prompt('密码错误!请重新输入:');
  }
  if (pass1!="password" & inputCount ==3)
  history.go(-1);
  return " ";
  }
  document.write(password());
  </SCRIPT>
  </head>
  <body>
  </body>
  </html>
原文地址:https://www.cnblogs.com/soofly/p/3478949.html