javascript-basic/4-03.HTML Style.html at main · seungwongo/javascript-basic · GitHub

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<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title></title>
    <style>
    .border-red {
        border:2px dashed red;
    }

    .border-green {
        border:2px solid green;
    }

    .border-default {
        border-width:1px;
        border-color:blue;
        border-style:solid;
    }
    </style>
</head>

<body>
    Text:
    <br>
    <input type="text" id="text1" onblur="changeBorder();">

    <br> Radio(이메일 수신):
    <br>
    <label>
        <input type="radio" name="radio_email_yn" value="Y" onclick="showEmail();"> 동의</label>
    <label>
        <input type="radio" name="radio_email_yn" value="N" onclick="hideEmail();" checked> 거부</label>
        <div id="divEmail" style="display:none;">이메일 <input type="text" id="email"></div>
    <br> Select:
    <br>
    <select id="select1" onchange="doChange(this);">
        <option value=""></option>
        <option value="KO">Korea</option>
        <option value="CN">China</option>
        <option value="JP">Japan</option>
    </select>
    <select id="select2" style="display:none;">
      <option value="">서울</option>
      <option value="">부산</option>
      <option value="">대전</option>
      <option value="">제주</option>
  </select>
    <button type="button" onclick="doSave();">Save</button>
    <br>
    <script>
      function changeBorder(){
        var text1 = document.getElementById("text1");
        if(text1.value != "") {
          text1.className = "border-green";
        }
      }

      function showEmail() {
        document.getElementById("divEmail").style.display = "";
      }

      function hideEmail() {
        document.getElementById("divEmail").style.display = "none";
      }

      function doSave() {
        var text1 = document.getElementById("text1");
        if(text1.value == "") {
          text1.className = "border-red";
          return alert("필수값들을 입력하세요.");
        }

        console.log("doSave 실행합니다.");
      }

      function doChange(obj) {
        if(obj.value == "KO") {
          document.getElementById("select2").style.display = "";
        }else {
          document.getElementById("select2").style.display = "none";
        }
      }

    </script>
</body>

</html>