不知道这个问题是不是很简单,方便的话不妨看下 当然,当不输入pid而直接选下拉框,效果也应当一样 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 <HTML><HEAD></HEAD><BODY onLoad="Init()"><select name="pid" onChange="changelist(this.selectedIndex)"></select><select name="list" onChange="changelist(this.selectedIndex)"></select><input name="pprice" type="text" id="pprice" size="12" onpropertychange="calc()">* <input name="q" type="text" id="q" size="8" onpropertychange="calc()">= <input name="result" type="text" id="result"><script language="JavaScript" type="text/JavaScript">function Info(pid,pname,pprice){ this.pid=pid this.pname=pname this.pprice=pprice}//以下数据由数据库取得在服务器端产生var PInfo =new Array(5)//这个3根据记录集的数目定//下面是用循环来产生 PInfo[0]=new Info("001","墨盒","360.00")PInfo[1]=new Info("002","打印纸","60.00")PInfo[2]=new Info("003","打印机","2200.00")PInfo[3]=new Info("004","计算机","8400.00")PInfo[4]=new Info("005","碎纸机","720.00")//数据结束function Init(){ for (var i=0;i<PInfo.length;i++){ document.all.pid.options[i]=new Option(PInfo[i].pid) document.all.list.options[i]=new Option(PInfo[i].pname) document.all.pprice.value=PInfo[i].pprice }}function calc(){ if (document.all.q.value.length>0){ document.all.result.value=document.all.pprice.value*document.all.q.value }}function changelist(x){ document.all.pid.options[x].selected=true; document.all.list.options[x].selected=true; document.all.pprice.value=PInfo[x].pprice}</script></BODY></HTML> <HTML><HEAD></HEAD><BODY ><input name=pid onchange="document.all.pid2.value=this.value;changelist();"><select name="pid2" onChange="changelist(this.selectedIndex)"><option value="" pName="" pPrice=""><option value="001" pName="墨盒" pPrice="360.00">墨盒(001)<option value="002" pName="打印纸" pPrice="60.00">打印纸(002)<option value="003" pName="打印机" pPrice="2200.00">打印机(003)</select><input name="pprice" type="text" id="pprice" size="12" onpropertychange="calc()">* <input name="q" type="text" id="q" size="8" onpropertychange="calc()">= <input name="result" type="text" id="result"><script language="JavaScript" type="text/JavaScript">function calc(){ document.all.result.value=document.all.pprice.value*document.all.q.value;}function changelist(){ var x=document.all.pid2.selectedIndex; if(x==-1) { document.all.pid2.options[0].selected=true; x=0; } document.all.pprice.value=document.all.pid2.options[x].pPrice; calc();}</script></BODY></HTML> jquery.easyui.tabs 中的内容错位怎么解决?? return false 的用法请教 javascript空格问题 正则表达式取数字问题? 如何修改这段验证手机号的代码:Mobile : /^((\(\d{2,3}\))|(\d{3}\-))?13\d{9}$/, 对不起,刚学JS,请大虾帮忙看一下 在ASP页中实现图片跟随滚动条移动! 请问下拉菜单可以用hidden域来表示吗? js 页面刷新问题window.location.href 小练习 从模态窗口返回值???? 如何取得父窗口的URL
<HEAD>
</HEAD>
<BODY onLoad="Init()">
<select name="pid" onChange="changelist(this.selectedIndex)">
</select>
<select name="list" onChange="changelist(this.selectedIndex)">
</select>
<input name="pprice" type="text" id="pprice" size="12" onpropertychange="calc()">*
<input name="q" type="text" id="q" size="8" onpropertychange="calc()">=
<input name="result" type="text" id="result">
<script language="JavaScript" type="text/JavaScript">
function Info(pid,pname,pprice){
this.pid=pid
this.pname=pname
this.pprice=pprice
}
//以下数据由数据库取得在服务器端产生
var PInfo =new Array(5)//这个3根据记录集的数目定
//下面是用循环来产生
PInfo[0]=new Info("001","墨盒","360.00")
PInfo[1]=new Info("002","打印纸","60.00")
PInfo[2]=new Info("003","打印机","2200.00")
PInfo[3]=new Info("004","计算机","8400.00")
PInfo[4]=new Info("005","碎纸机","720.00")
//数据结束
function Init(){
for (var i=0;i<PInfo.length;i++){
document.all.pid.options[i]=new Option(PInfo[i].pid)
document.all.list.options[i]=new Option(PInfo[i].pname)
document.all.pprice.value=PInfo[i].pprice
}
}
function calc(){
if (document.all.q.value.length>0){
document.all.result.value=document.all.pprice.value*document.all.q.value
}
}
function changelist(x){
document.all.pid.options[x].selected=true;
document.all.list.options[x].selected=true;
document.all.pprice.value=PInfo[x].pprice
}
</script>
</BODY>
</HTML>
<HEAD>
</HEAD>
<BODY >
<input name=pid onchange="document.all.pid2.value=this.value;changelist();">
<select name="pid2" onChange="changelist(this.selectedIndex)">
<option value="" pName="" pPrice="">
<option value="001" pName="墨盒" pPrice="360.00">墨盒(001)
<option value="002" pName="打印纸" pPrice="60.00">打印纸(002)
<option value="003" pName="打印机" pPrice="2200.00">打印机(003)
</select>
<input name="pprice" type="text" id="pprice" size="12" onpropertychange="calc()">*
<input name="q" type="text" id="q" size="8" onpropertychange="calc()">=
<input name="result" type="text" id="result">
<script language="JavaScript" type="text/JavaScript">
function calc(){
document.all.result.value=document.all.pprice.value*document.all.q.value;
}function changelist(){
var x=document.all.pid2.selectedIndex;
if(x==-1)
{
document.all.pid2.options[0].selected=true;
x=0;
}
document.all.pprice.value=document.all.pid2.options[x].pPrice;
calc();
}
</script>
</BODY>
</HTML>