s18L2/Q2.html at s18L2Javascript · theguy54007/s18L2 · GitHub

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<html>
  <head>
    <title>實作：身份證驗證(Q2:男女)</title>
    <style>
      .container{
        margin-top: 200px;
        text-align: center;
      }
    </style>
    <script>
    "use strict";
      function validate() {
        var code = document.getElementById("nric").value;
        if (code =="") {
          alert("請輸入！");
          return;
        }else if (!isNaN(code)) {
          alert("資料不符，請重新輸入！");
          return;
        }else if (code.length != 10) {
          alert("資料長度不符，請重新輸入！");
          return;
        }else {
          if(code[1] == 1){
            document.getElementById("result").innerHTML = "先生您好！驗證成功！";
          }else if(code[1] == 2){
            document.getElementById("result").innerHTML = "小姐您好！驗證成功！";
          }else{
            alert("資料不符，請重新輸入！");
            return;
          }
        }
      }
    </script>
  </head>
  <body>
    <div class="container">
      <h1>請輸入身份證字號</h1>
      <form>
        <input type="text" id="nric">
        <input type="button" value="驗證" onclick="validate()">
        <p id="result"></p>
      </form>
    </div>


  </body>
</html>