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<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>收集用户信息</title>
</head>
<body onload="init()">
<form action="/My/Home/Info" method="post" name="creator" enctype="multipart/form-data">
<script language="javascript">
var where = new Array(3);
function comefrom(loca, locacity) { this.loca = loca; this.locacity = locacity; }
where[0] = new comefrom("请选择数据库", "请选择数据库版本");
where[1] = new comefrom("Microsoft SQL Server", "Microsoft SQL Server 2005|Microsoft SQL Server 2008|Microsoft SQL Server 2012|Microsoft SQL Server 2014");
where[2] = new comefrom("Access", "Access 03|Access 05|Access 07");
where[3] = new comefrom("Oracle", "Oracle 1|Oracle 2|Oracle 3");
function select() {
with (document.creator.province) { var loca2 = options[selectedIndex].value; }
for (i = 0; i < where.length; i++) {
if (where[i].loca == loca2) {
loca3 = (where[i].locacity).split("|");
for (j = 0; j < loca3.length; j++) { with (document.creator.city) { length = loca3.length; options[j].text = loca3[j]; options[j].value = loca3[j]; var loca4 = options[selectedIndex].value; } }
break;
}
}
document.creator.newlocation.value = loca2 + loca4;
}
function init() {
with (document.creator.province) {
length = where.length;
for (k = 0; k < where.length; k++) { options[k].text = where[k].loca; options[k].value = where[k].loca; }
options[selectedIndex].text = where[0].loca; options[selectedIndex].value = where[0].loca;
}
with (document.creator.city) {
loca3 = (where[0].locacity).split("|");
length = loca3.length;
for (l = 0; l < length; l++) { options[l].text = loca3[l]; options[l].value = loca3[l]; }
options[selectedIndex].text = loca3[0]; options[selectedIndex].value = loca3[0];
}
}
</script>
<label>数据库</label><div class="opts"></div><font color=#000000>
<select class="sb" name="province" onchange="select()" style="width: 200px; height: 30px;"></select>
<select class="sb" name="city" onchange="select()" style="width: 200px; height: 30px;"></select>
</form>
</body>
</html>
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原文地址：http://www.cnblogs.com/bidianqing/p/4445087.html
