运行效果：
说明：
Ajax获取Json数据列表，再循环查询对应的数据，如果未找到，给出提示。
示例源码：
JS代码：
$('#btnQuery').on('click', function () {
var name = $('input:text').val();
$.ajax({
type: 'GET',
url: 'bjyb.json',
// data: {name:name},
dataType: 'json',
success: function (data) {
var flag = false; //是否找到标识
//遍历Json数据
$.each(data, function (key, value) {
if (key == name) {
$('#result').html(value);
flag = true;
}
})
if(flag == false)
{
//未找到给出提示
$('#result').html('<span style="color: orangered">暂未收录！</span>')
}
}
});
});
</script>HTML全文
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Ajax+Json查询</title>
<link rel="stylesheet" href="http://demo.h-ui.net/H-ui.admin/3.1/static/h-ui/css/H-ui.min.css">
<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
</head>
<body>
<div class="containBox">
<div class="containBox-bg"></div>
<div class="wap-container">
<div class="container ui-sortable">
<div class="panel panel-default mt-20" style="width:500px;margin:0 auto">
<div class="panel-header selected">北京市邮编查询</div>
<div class="album">
<div class="select">
<div class="row cl">
<label class="form-label col-sm-2 col-md-3">输入区、县名称：</label>
<div class="formControls col-sm-5 col-md-5">
<input type="text" name="url" class="input-text">
</div>
</div>
<div class="row cl">
<div class="formControls col-md-5">
<button id="btnQuery" class="btn btn-primary size-L">查询</button>
</div>
</div>
</div>
</div>
<div class="panel-body" style="display: block;">
<div id='result' class="result"></div>
</div>
</div>
</div>
</div>
</div>
<script>
$('#btnQuery').on('click', function () {
var name = $('input:text').val();
$.ajax({
type: 'GET',
url: 'bjyb.json',
// data: {name:name},
dataType: 'json',
success: function (data) {
var flag = false;//是否找到标识
//遍历Json数据
$.each(data, function (key, value) {
if (key == name) {
$('#result').html(value);
flag = true;
}
})
if(flag == false)
{
//未找到给出提示
$('#result').html('<span style="color: orangered">暂未收录！</span>')
}
}
});
});
</script>
</body>
</html>
</body>
</html>JSON数据：
{
"东城区": "100001",
"西城区": "100009",
"崇文区": "100022",
"宣武区": "100050",
"朝阳区": "100006",
"海淀区": "100036"
}