AJAX之JSON

<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



?>

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