<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML> <HEAD> <TITLE> New Document </TITLE> <meta http-equiv="content-type" content="text/html" charset="utf-8"> <link rel="stylesheet" type="text/css" href=""> <script type="text/javascript" src=""></script> <script language="javascript" type="text/javascript"> function changevalue() { var el = document.getElementById("chanp"); var textnode = document.getElementById("jiag"); if (el != null) { for (i=0; i<el.options.length; i++) { if ( el.options(i).selected ) { var aid = el.options(i).id; textnode.value = aid; } } }
<option value="产品1" id="价格1">产品1</option>
<option value="产品2" id="价格2">产品2</option>
</select><input name="jiag" type="text" id="jiag" size="20" maxlength="20">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<meta http-equiv="content-type" content="text/html" charset="utf-8">
<link rel="stylesheet" type="text/css" href="">
<script type="text/javascript" src=""></script>
<script language="javascript" type="text/javascript"> function changevalue()
{
var el = document.getElementById("chanp");
var textnode = document.getElementById("jiag");
if (el != null)
{
for (i=0; i<el.options.length; i++)
{
if ( el.options(i).selected )
{
var aid = el.options(i).id;
textnode.value = aid;
}
}
}
}</script>
</HEAD><BODY>
<select name='chanp' id="chanp" onChange="javascript:changevalue();">
<option value="">-请选择-</option>
<option value="产品0" id="价格0">产品0</option>
<option value="产品1" id="价格1">产品1</option>
<option value="产品2" id="价格2">产品2</option>
</select>
<input name="jiag" type="text" id="jiag" size="20" maxlength="20">
</BODY>
</HTML>
<option value="产品1" id="价格1">产品1</option>
<option value="产品2" id="价格2">产品2</option>
</select>function changevalue(o){
document.getElementById("jiag").value = o.value;
}
function changevalue(){
jiag.value=chanp.options[chanp.selectedIndex].text;
}
</SCRIPT><select name='chanp' id="chanp" onChange="javascript:changevalue()">
<option value="产品1" id="价格1">产品1</option>
<option value="产品2" id="价格2">产品2</option>
</select><input name="jiag" type="text" id="jiag" size="20" maxlength="20">