<head>
<script src="../jquery-2.2.3.min.js"></script>
</head>
<body>
<select id="sel">
</select>
</body>
<script type="text/javascript">
$(document).ready(function(e) {
$.ajax({
url:"ChuLi.php",
dataType:"JSON",
success: function(data){
var str = "";
for(var k in data)
{
str+="<option value=‘"+data[k][0]+"‘>"+data[k][1]+"</option>";
}
$("#sel").html(str);
}
});
});
</script>
处理页面：
<?php
include("../DBDA.php");
$db = new DBDA();
$sql = "select * from Nation";
$attr = $db->Query($sql);
echo json_encode($attr);//JSON独有
?>
原文：http://www.cnblogs.com/dianfu123/p/5528133.html