获取 JSON 数据
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>获取 JSON 数据</title>
<script src="http://cdn.static.runoob.com/libs/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("button").click(function(){
$.getJSON("demo_ajax_json.js",function(result){
$.each(result,function(i,field){
$("div").append(field+"<br>");
})
})
})
})
</script>
</head>
<body>
<button>获取 JSON 数据</button>
<div></div>
</body>
</html>
demo_ajax_json.js
{
"firstName": "Bill",
"lastName": "Gates",
"age": 60
}