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Jquery实现Ajax+Json查询邮政编码
hanyufeng的博客
Original
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运行效果：

L18-2-1.png

L18-2-2.png

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"
}


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