JS文本框追加多個下拉框的值的簡單實例

這篇文章介紹了JS文本框追加多個下拉框的值的例子有需要的朋友可以參考一下復制代碼代碼如下:

　　
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<script language="javascript">
function doit(ofrm){
   //ofrmtvalue=parseInt(ofrmsvalue)+parseInt(ofrmsvalue)+parseInt(ofrmsvalue)+parseInt(ofrmsvalue);
ofrmofrmtvalue=ofrmsvalue+ofrmsvalue+ofrmsvalue+ofrmsvalue;
}
</script>
</HEAD>
<BODY>
<form name="tfrm">
<select name="s" onChange="javascript:doit(thisform);">
<option value="*" selected>請選擇</option>
<option value=""></option>
<option value=""></option>
<option value=""></option>
</select>
<select name="s" onChange="javascript:doit(thisform);">
<option value="*" selected>請選擇</option>
<option value=""></option>
<option value=""></option>
<option value=""></option>
</select>
<select name="s" onChange="javascript:doit(thisform);">
<option value="*" selected>請選擇</option>
<option value=""></option>
<option value=""></option>
<option value=""></option>
</select>
<select name="s" onChange="javascript:doit(thisform);">
<option value="*" selected>請選擇</option>
<option value=""></option>
<option value=""></option>
<option value=""></option>
</select>
<input type="text" name="t" value="">
</form>
</BODY>
</HTML>

From:http://tw.wingwit.com/Article/program/Java/JSP/201311/20348.html