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交个作业

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好耶

#1 Created at ... [Delete] [Delete and Lock User]

 showErrMsg('');  

  var yhm = document.getElementById('username').value;

  var mm = document.getElementById('password').value;

  var cfmm = document.getElementById('password-2').value;

  var regYhm =  /[A-Za-z0-9]{3,10}/;

  if(!regYhm.test(yhm)){

   showErrMsg('用户名必须是3-10位英文字母或数字');

   return false;

  }

  if(mm.length>20||mm.length<6){

    showErrMsg('口令必须是6-20位');

    return false;

  }

  if(mm.value!=cfmm.value){

    showErrMsg('两次输入口令必须一致');

    return false;

  }

    return true;

}

var showErrMsg = function(msg){

    var err = document.getElementById('test-error');

    err.innerText = msg;

}


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