2级连动怎么写 RT 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><script language="javascript"><!--var subcat = new Array();subcat[0] = new Array('10','1','=1')subcat[1] = new Array('10','2','=2')subcat[2] = new Array('10','3','=3')subcat[3] = new Array('10','4','=4')subcat[4] = new Array('10','5','=5')subcat[5] = new Array('10','6','=6')subcat[6] = new Array('10','7','=7')subcat[7] = new Array('10','8','=8')subcat[8] = new Array('10','9','=9')subcat[9] = new Array('10','10','=10')subcat[10] = new Array('20','11','=11')subcat[11] = new Array('20','12','=12')subcat[12] = new Array('20','13','=13')subcat[13] = new Array('20','14','=14')subcat[14] = new Array('20','15','=15')subcat[15] = new Array('20','16','=16')subcat[16] = new Array('20','17','=17')subcat[17] = new Array('20','18','=18')subcat[18] = new Array('20','19','=19')subcat[19] = new Array('20','20','=20')function changeselect1(locationid){ document.form1.s2.length = 0; //初始化下拉列表 清空下拉数据 document.form1.s2.options[0] = new Option('==请选择==',''); //给第一个值 for (i=0; i<subcat.length; i++) //legth=20 { if (subcat[i][0] == locationid) //[0] [1] 第一列 第二列 {document.form1.s2.options[document.form1.s2.length] = new Option(subcat[i][1], subcat[i][2]);} //建立option //第一次 length=1 因为有==请选择== //i=9时 length= 10 值有11个 因为从0数起 subcat[i][0] == locationid屏蔽了再写 }}//--></script><form name="form1">二级联动:<select name="s1" onChange="changeselect1(this.value)"><option>==请选择==</option><option value="10">1-10</option><option value="20">11-20</option></select><select name="s2" onChange="alert(this.value)"> <option>==请选择==</option></select></form>http://blog.csdn.net/jawsy/archive/2005/06/06/388658.aspx window.open怎么指定浏览器打开? 求助一个小问题 怎样获得页面的宽高?不是body的宽高,也不是分辨率? 启动tomcat没问题,可一打开jsp页面就出现下面的错误 大家帮我看看什么问题. 关于获取窗口高度和宽度的问题 【新手求解】'null' 为空或不是对象 谁能发给我一个关于WebBrowser中页面设置的控件,急用,在线等! 请问一个从一个页面提交另一个页面的问题 请教一个页面外观的问题!!----谢谢你了! 求一个正则表达式(在线求答) 如何把表单验证做成一个集成的验证函数?
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</head>
<body>
<script language="javascript">
<!--
var subcat = new Array();
subcat[0] = new Array('10','1','=1')
subcat[1] = new Array('10','2','=2')
subcat[2] = new Array('10','3','=3')
subcat[3] = new Array('10','4','=4')
subcat[4] = new Array('10','5','=5')
subcat[5] = new Array('10','6','=6')
subcat[6] = new Array('10','7','=7')
subcat[7] = new Array('10','8','=8')
subcat[8] = new Array('10','9','=9')
subcat[9] = new Array('10','10','=10')
subcat[10] = new Array('20','11','=11')
subcat[11] = new Array('20','12','=12')
subcat[12] = new Array('20','13','=13')
subcat[13] = new Array('20','14','=14')
subcat[14] = new Array('20','15','=15')
subcat[15] = new Array('20','16','=16')
subcat[16] = new Array('20','17','=17')
subcat[17] = new Array('20','18','=18')
subcat[18] = new Array('20','19','=19')
subcat[19] = new Array('20','20','=20')
function changeselect1(locationid)
{
document.form1.s2.length = 0; //初始化下拉列表 清空下拉数据
document.form1.s2.options[0] = new Option('==请选择==',''); //给第一个值
for (i=0; i<subcat.length; i++) //legth=20
{
if (subcat[i][0] == locationid) //[0] [1] 第一列 第二列
{document.form1.s2.options[document.form1.s2.length] = new Option(subcat[i][1], subcat[i][2]);} //建立option
//第一次 length=1 因为有==请选择==
//i=9时 length= 10 值有11个 因为从0数起 subcat[i][0] == locationid屏蔽了再写
}
}
//-->
</script><form name="form1">
二级联动:<select name="s1" onChange="changeselect1(this.value)">
<option>==请选择==</option>
<option value="10">1-10</option>
<option value="20">11-20</option>
</select><select name="s2" onChange="alert(this.value)">
<option>==请选择==</option>
</select></form>http://blog.csdn.net/jawsy/archive/2005/06/06/388658.aspx