表单提交要转移到json文件作为对象的数据

Question

我的表单如下：HTML

    <form class="form-horizontal demo-form">
    <fieldset>        
    <div class="form-group">
        <div class="col-md-5">
            <input type="text" required="" class="form-control input-md" placeholder="From Range" data-field="l1_price.from" id="from">
            <input type="text" required="" class="form-control input-md" placeholder="To Range" data-field="l1_price.to" id="to">
            <input type="text" required="" class="form-control input-md" placeholder="Price" data-field="l1_price.price" id="price">      
        </div>
        <div class="col-md-5">
            <input type="text" required="" class="form-control input-md" placeholder="From Range" data-field="l2_price.from" id="from">
            <input type="text" required="" class="form-control input-md" placeholder="To Range" data-field="l2_price.to" id="to">
            <input type="text" required="" class="form-control input-md" placeholder="Price" data-field="l2_price.price" id="price">      
        </div>
        <div class="col-md-5">
            <input type="text" required="" class="form-control input-md" placeholder="From Range" data-field="l3_price.from" id="from">
            <input type="text" required="" class="form-control input-md" placeholder="To Range" data-field="l3_price.to" id="to">
            <input type="text" required="" class="form-control input-md" placeholder="Price" data-field="l3_price.price" id="price">      
        </div>
    </div>     
    <div class="form-group">
        <label for="submit" class="col-md-4 control-label"></label>
        <div class="col-md-5">
            <button class="btn btn-success" id="submit">Submit</button>
        </div>
        </div>
   </fieldset>
</form>

我的Java脚本代码：

$("form")
    .serializer()
    .on("serializer:data", function (e, formData) {
        alert(JSON.stringify(formData));
    });

Json对象

"range":{
        "l1_price":
            {"from":"0", "to":"260k", "price": "Rs 2"},
        "l2_price":
            {"from":"260k", "to":"500k", "price": "Rs 4"},
        "l3_price":
            {"from":"500k", "to":"1MM", "price": "Rs 7"},
        "l4_price":
            {"from":"1MM", "to":"2MM", "price": "Rs 3"}
     }

但实际的Json对象

{
    "range":{
        "l1_price":
            {"from":"0", "to":"260k", "price": "Rs 2"},
        "l2_price":
            {"from":"260k", "to":"500k", "price": "Rs 4"},
        "l3_price":
            {"from":"500k", "to":"1MM", "price": "Rs 7"},
        "l4_price":
            {"from":"1MM", "to":"2MM", "price": "Rs 3"}
     },
     "rates" : [".02",".04",".007",".003",".002"],
     "thresholds": [26e4,5e5,1e6,2e6,3e6]
}

问题对于速率和阈值，我如何从表格或上面的json范围数组中获得动态