2011. 4. 11. 14:22 컴퓨터이야기/JQuery



Jquery 와 eval 함수를 이용한 간단한 2단 리스트 박스


<!DOCTYPE html>
<html>
<head>
  <style>
  div { color:red; }
  </style>
  <script src="http://code.jquery.com/jquery-1.5.js"></script>
  <meta charset="utf-8">
</head>
<body>
<form>
<div id="first">
  <INPUT type="text" name="txt1" id="txt1">
  <select name="garden1" size="5" id="garden1" onChange="change_sel(1)">
    <option>Flowers</option>
    <option>Shrubs</option>
    <option>Trees</option>
    <option>Bushes</option> 
    <option>Grass</option>
    <option>Dirt</option>
  </select>
</div>
<div id="second">
  <INPUT type="text" name="txt2" id="txt2">
  <select name="garden2" size="5" id="garden2" onChange="change_sel(2)"> 
    <option>Flowers</option>
    <option>Shrubs</option>
    <option>Trees</option>
    <option>Bushes</option> 
    <option>Grass</option>
    <option>Dirt</option>
  </select>
</div>
<!--<input type="button" name="del_OK" id="del_OK" onClick="del_OK(1)">-->
<INPUT TYPE="button" VALUE="del1" ONCLICK="del_OK(1)">
<INPUT TYPE="button" VALUE="del2" ONCLICK="del_OK(2)">
</form> 
<script>
/*
     $("#first select").change(function () {
          var str1 = "";
          $("#garden1 option:selected").each(function () {
                str1 += $(this).text() + " ";
              });
   $("#first").children("input").val(str1);
        })
       // .trigger("change");

     $("#garden2").change(function () {
          var str2 = "";
          $("#garden2 option:selected").each(function () {
                str2 += $(this).text() + " ";
              });
   $("#txt2").val(str2);
        })
        .trigger("change");
*/
// 위에 소스를 eval 함수를 이용해서 단순화

function change_sel(sel){
 var garden="#garden"
 var txt = "#txt"
 var str ="str"
 $(garden+sel).click(function () {
  eval("var "+str+sel);
   $(garden+sel+" option:selected").each(function () {
    eval(str +" = $(this).text()");
   });
  $(txt+sel).val(str);
 })
}

function del_OK(sel){
 var garden="#garden"
 var txt = "#txt"
 var index = $(garden+sel+" option").index($(garden+sel+" option:selected"));

 msg="하위 메뉴도 자동 삭제 됩니다. 삭제하시겠습니까?"
 if(index>=0&&confirm(msg)){
  $(txt+sel).val("");
  $(garden+sel+" option:eq("+index+")").remove();
 }else{
  alert("선택이 잘못 되었습니다.")
  return
 }
}


</script>
 
</body>
</html>


posted by 변화지시자

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