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我创建了一个 JQuery 函数来检查关闭的自定义下拉列表中是否存在空的必填字段。

如果下拉列表中的必填字段为空，并且下拉列表当前已关闭，我希望下拉列表打开，如果必填字段中没有空值，我希望下拉列表关闭。

问题是，如果关闭下拉菜单，则无法访问必填字段，我尝试使用此功能解决该问题。

出于某种原因，如果表单至少提交一次并且必填字段至少打开一次，它只会检查这些输入字段。

find(':input[required]')如果下拉菜单至少没有打开一次，则不会提供任何输出，一旦您打开并关闭下拉菜单，该功能就会起作用。

这是功能：

function dropdown_required() {
    var required = 0;
    $('#visible_fields').find(':input[required]').each(function () {
        if (!this.value) {
            for (var i = 1; i < 15; i++) {
                $('.form_' + i).find(':input[required]').each(function () {
                    $(this).prop('required', false);
                });
            }
            required++;
        }
    });

    if (required == 0) {
        for (var i = 1; i < 15; i++) {
            var empty = 0;
            $('.form_' + i).find(':input[required]').each(function ()
             {
                if(!this.value) {
                    empty++;
                }
            });

            if (empty !== 0) {
                if ($(".arrow_" + i).hasClass("rotate_2")) {
                    $(".arrow_" + i).addClass("rotate_1").removeClass("rotate_2");
                    $(".form_" + i).fadeToggle();
                }

            } else if ($(".arrow_" + i).hasClass("rotate_1")) {
                $(".arrow_" + i).addClass("rotate_2").removeClass("rotate_1");
                $(".form_" + i).fadeToggle();
            }
        }
    }
}

这是html：

<form method="POST" autocomplete="off" enctype="multipart/form-data" target="_self"
          action="/contacten/leveranciers/iframe{{ ($leverancier == null ? '' : '/' . $leverancier->cot_id) }}">
        {{ csrf_field() }}

<div id="visible_fields">
<div class="row">

            <div class="col-xs-6">
                <div class="form-group">
                    <label for="organisatie">Organisatie</label>
                    <input type="text" name="organisatie" id="organisatie" blocked=",;()/" hk="a"
                           value="{{ ($leverancier == null ? old('organisatie') : $leverancier->cot_organisatie) }}"
                           class="form-control inputblocked">
                </div>
            </div>
            <div class="col-xs-6">
                <div class="form-group">
                    <label for="postcode">Postcode</label>
                    <input type="text" name="postcode" id="postcode" filter="a-zA-Z0-9" maxlength="6"
                           value="{{ ($leverancier == null ? old('postcode') : $leverancier->cot_postcode) }}"
                           class="form-control inputfilter filter_postcode">

                </div>
            </div>
        </div>
//all visible input fields outside of the dropdowns
</div>
<label class="toggle_1">Controles<span class="arrow_1 glyphicon glyphicon-menu-left"
                                                       aria-hidden="true"></span></label>
                <div class="form_1">
                    <div class="row">
                        <div class="col-xs-6">
                            <div class="form-group">
                                <label for="bkr">BKR</label>
                                <select name="bkr" class="form-control" required>
                                    <option selected hidden></option>

<option value="10">BKR toetsing open</option>

<option value="11">BKR toetsing accoord</option>

<option value="12">Vrijgesteld van BKR toetsing</option>

</select>
                            </div>
                        </div>
                        <div class="col-xs-6">
                            <div class="form-group">
                                <label for="bkr_bestand">BKR bestand</label>
                                <input type="file" name="bkr_bestand" id="bkr_bestand"
                                       data-default-file=""
                                       class="form-control dropify">
                                <input type="hidden" name="verwijder_foto" class="verwijder_foto" value="0">
                            </div>
                        </div>
                    </div>
                </div>

                <div class="form-group">
                    <input type="hidden" id="input_iframe" name="input_iframe" value="">
                    <button type="submit" onclick="dropdown_required()"
                            class="btn btn-primary">Toevoegen </button>
                </div>
            </form>
        </div>
        </body>
    </html>
4

1 回答 1

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您的函数检查您的arrow元素是否具有 class rotate_2。您粘贴的代码既没有rotate_1或rotate_2也没有else块，因此切换永远不会执行。

问题演示：

// This group has empty mandatory elements
var empty = 1;

$('#validate').click(function() {

  if (empty !== 0) {

    console.log("I have empty elements!");

    // From your comments, this might be backwards
    if ($(".arrow_1").hasClass("rotate_2")) {

      console.log("I'm going to show them");

      $(".arrow_1").addClass("rotate_1").removeClass("rotate_2");
      $(".form_1").fadeToggle();
    }
    // This is missing in the code
    else {
      console.log("I wasn't invited to the party");
    }
    // -------
  } else if ($(".arrow_1").hasClass("rotate_1")) {

    console.log("I'm out, I don't have empty elements...");

    $(".arrow_1").addClass("rotate_2").removeClass("rotate_1");
    $(".form_1").fadeToggle();
  }
});

$('#simulate').click(function() {
  // Simulates manually opening and closing
  // In short, add rotate_2 class as if it's been toggled
  $('.arrow_1').addClass('rotate_2');
  console.log("Toggled manually");
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<label class="toggle_1">Controles<span class="arrow_1 glyphicon glyphicon-menu-left"
aria-hidden="true"></span></label>
<div class="form_1">
  <div>Some form elements</div>
</div>

<button id="validate">Validate</button>

<button id="simulate">Simulate</button>

于 2018-10-10T12:57:09.757 回答