当 select 来自 ajax 另一个输入字段的选项出现时下拉

Question

您好，我需要一些帮助，如果我 select 下拉菜单和 ajax 选项中的 select 和一个隐藏的输入字段出现，我该怎么做？

<div class="form-row">
  <div class="col">
    <label for="select-price-mode" class="col-form-label">Price Mode</label>
    <select class="select-price-mode custom-select-sm col-10" id="select-price-mode" required>
      <option selected disabled value="">Select ....</option>
    </select>

  </div>

  <div class="col" hidden>
    <label for="select-payment-frequency" class="col-form-label">Payment Frequency</label>
    <select class="select-payment-frequency custom-select-sm col-10" id="select-payment-frequency" required>
      <option selected disabled value="">Select ....</option>
    </select>
   
  </div>

这是我的ajax

// Here the calling Ajax for the drop down menu below
    $.ajax({
    // The url that you're going to post
    /*

    This is the url that you're going to put to call the
    backend api,
    in this case, it's
    https://ecoexchange.dscloud.me:8080/api/get (production env)

    */
    url:"https://ecoexchange.dscloud.me:8090/api/get",
    // The HTTP method that you're planning to use
    // i.e. GET, POST, PUT, DELETE
    // In this case it's a get method, so we'll use GET
    method:"GET",
    // In this case, we are going to use headers as
    headers:{
        // The query you're planning to call
        // i.e. <query> can be UserGet(0), RecyclableGet(0), etc.
        query:"PriceModeGet()",
        // Gets the apikey from the sessionStorage
        apikey:sessionStorage.getItem("apikey")
    },
    success:function(data,textStatus,xhr) {
        console.log(data);
        for (let option of data) {
            $('#select-price-mode').append($('<option>', {
                value: option.PriceMode,
                text: option.PriceMode
            }));
        }
                                                    },
    error:function(xhr,textStatus,err) {
        console.log(err);
    }
});

这是我的 ajax 回复

[
    {
        "PriceMode": "Price By Recyclables"
    },
    {
        "PriceMode": "Service Charger"
    }
]

哪里说如果我 select Price By Recyclables 隐藏的下拉列表出现我该怎么做？

Answer 1

您可以使用 onchange 事件触发检查，如果用户选择了您想要的值，则显示选择框。您必须使用隐藏道具 (divToDisplay) 向 div 添加一个 id。

$("#select-price-mode").change(function() {
   if(this.value === "Price By Recyclables") {
       $('#divToDisplay').removeAttr('hidden');
   }
});

Answer 2

当第一次选择一个选项时调用一个函数select

const checkPriceMode = () => {
  let value = $('.select-price-mode').val();
  $('.payment-frequency').fadeOut();
  if(value === 'Price By Recyclables') $('.payment-frequency').fadeIn();
};

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="form-row">
  <div class="col">
    <label for="select-price-mode" class="col-form-label">Price Mode</label>
    <select onchange="checkPriceMode()" class="select-price-mode custom-select-sm col-10" id="select-price-mode" required>
      <option selected disabled value="">Select.....</option>
      <option value="Price By Recyclables">Price By Recyclables</option>
      <option value="Service Charger">Service Charger</option>
    </select>

  </div>

  <div class="col payment-frequency" hidden>
    <label for="select-payment-frequency" class="col-form-label">Payment Frequency</label>
    <select class="select-payment-frequency custom-select-sm col-10" id="select-payment-frequency" required>
      <option selected disabled value="">Select ....</option>
    </select>
   
  </div>

当 select 来自 ajax 另一个输入字段的选项出现时下拉

Drop down when select the option from ajax another input field appear

html

javascript

ajax

jquery

dropdown