<SCRIPT type="text/javascript">
function addCombo() {
var combo = document.frm.combo;
var option = null;
var text = null;
for( i = 0; i < 4; i++ ) {
option = document.createElement("OPTION");
option.setAttribute("value", i+1);
text = document.createTextNode("オプション"+(i+1));
option.appendChild(text)
combo.appendChild(option)
}
}
</SCRIPT>
<FORM name="frm">
<SELECT name="combo" style='width:150px;'>
</SELECT>
</FORM>
<INPUT type="button" value="データ追加" onclick='addCombo();'>
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