动态将表单ID传递到函数中

我在一个页面上有几个表单,我想使用相同的ajax函数。这对一种形式很有效,因为我用 getElementById

形式

<form id="postData" name="business" method="post" action="{{ path('location_graph', {'location_id': location.getId }) }}"
      class="m-form m-form--fit m-form--label-align-right">
    <div class="form-group m-form__group row">
        <label class="col-2 col-form-label required" for="description">Business
            Description</label>
        <div class="col-7">
            <input type="text" class="form-control m-input" id="description"
                   name="extra[description]">
        </div>
    </div>

    ...

    <div class="form-group m-form__group row">
        <button type="submit" class="btn m-btn--square btn-outline-primary">
            Submit
        </button>
    </div>
</form>

脚本

document.getElementById('postData').addEventListener('submit', postData);

function postData(event) {
    event.preventDefault();

    $.ajax({
        type: $(this).attr("method"),
        url: $(this).attr("action"),
        data: $(this).serialize(),
        success: function (data) {
            console.log(data);
            $('#success__para').html("You data was saved");
        }
    });
}