javascript - 语义 UI 下拉多选会删除刷新时的值

Question

我正在使用 ajax 绑定(bind) div#demo 中的部分 View ，并在 ajaxstop 上启动 dropdown .

提交详细信息后，ajax 再次加载部分 View 以刷新表格部分，然后在 ajaxstop 上重新启动 dropdown。

这对于单选下拉列表效果很好，但多选下拉列表会重置所选值。

我不希望多选下拉菜单重置其值。

// partial views

var viewA = `
<select class="ui dropdown">
  <option value="">Select Single Car</option>
  <option value="volvo">Volvo</option>
  <option value="saab">Saab</option>
  <option value="mercedes">Mercedes</option>
  <option value="audi">Audi</option>
</select>
<select class="ui dropdown" Multiple>
  <option value="">Select Multiple Car</option>
  <option value="volvo">Volvo</option>
  <option value="saab">Saab</option>
  <option value="mercedes">Mercedes</option>
  <option value="audi">Audi</option>
</select>
<button type="button" class="ui button primary">Submit</button>
`

var viewB = `<table class="ui celled table unstackable">
  <thead>
    <tr><th>Name</th>
    <th>Age</th>
    <th>Job</th>
  </tr></thead>
  <tbody>
    <tr>
      <td data-label="Name">James</td>
      <td data-label="Age">24</td>
      <td data-label="Job">Engineer</td>
    </tr>
    <tr>
      <td data-label="Name">Jill</td>
      <td data-label="Age">26</td>
      <td data-label="Job">Engineer</td>
    </tr>
    <tr>
      <td data-label="Name">Elyse</td>
      <td data-label="Age">24</td>
      <td data-label="Job">Designer</td>
    </tr>
  </tbody>
</table>`


$(document).ajaxStop(function() {
  $(".dropdown").dropdown({
    useLabels: false,
  });
});


function bindViewA() {
  $.ajax({
    url: "https://jsonplaceholder.typicode.com/todos/1"
  });
  $("#viewA").html(viewA);
}

function bindViewB() {
  $.ajax({
    url: "https://jsonplaceholder.typicode.com/todos/1"
  });
  $("#viewB").html(viewB);
}

$(document).on('click', 'button', () => {
  bindViewB();
});


bindViewA();
bindViewB();

#demo {
  padding: 30px;
}

#viewA {
  margin-bottom: 10px;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="2c5f49414d4258454f0159456c1e0218021e" rel="noreferrer noopener nofollow">[email protected]</a>/dist/semantic.min.css">
<script src="https://cdn.jsdelivr.net/npm/<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="8ffceae2eee1fbe6eca2fae6cfbda1bba1bd" rel="noreferrer noopener nofollow">[email protected]</a>/dist/semantic.min.js"></script>

<div id="demo">
  <div id="viewA"></div>
  <div id="viewB"></div>
</div>

重现步骤。

1. 从两个下拉列表中选择元素
2. 点击“提交”按钮重新加载详细信息部分

Answer 1

您可以使用下面的设置来设置下拉列表，而无需初始化

$(".dropdown").dropdown('setting', {
    useLabels: false,`
})'

// partial views

var viewA = `
<select class="ui dropdown">
  <option value="">Select Single Car</option>
  <option value="volvo">Volvo</option>
  <option value="saab">Saab</option>
  <option value="mercedes">Mercedes</option>
  <option value="audi">Audi</option>
</select>
<select class="ui dropdown" Multiple>
  <option value="">Select Multiple Car</option>
  <option value="volvo">Volvo</option>
  <option value="saab">Saab</option>
  <option value="mercedes">Mercedes</option>
  <option value="audi">Audi</option>
</select>
<button type="button" class="ui button primary">Submit</button>
`

var viewB = `<table class="ui celled table unstackable">
  <thead>
    <tr><th>Name</th>
    <th>Age</th>
    <th>Job</th>
  </tr></thead>
  <tbody>
    <tr>
      <td data-label="Name">James</td>
      <td data-label="Age">24</td>
      <td data-label="Job">Engineer</td>
    </tr>
    <tr>
      <td data-label="Name">Jill</td>
      <td data-label="Age">26</td>
      <td data-label="Job">Engineer</td>
    </tr>
    <tr>
      <td data-label="Name">Elyse</td>
      <td data-label="Age">24</td>
      <td data-label="Job">Designer</td>
    </tr>
  </tbody>
</table>`




$(document).ajaxStop(function() {
  $(".dropdown").dropdown('setting', {
    useLabels: false,
    forceSelection: false,
    sortSelect: true,
    //clearable: true,
    fullTextSearch: true,
    onHide: function() {
      //cleanDdlOnHide(this);
    }
  });
});

function bindViewA() {
  $.ajax({
    url: "https://jsonplaceholder.typicode.com/todos/1"
  });
  $("#viewA").html(viewA);
}

function bindViewB() {
  $.ajax({
    url: "https://jsonplaceholder.typicode.com/todos/1"
  });
  $("#viewB").html(viewB);
}

$(document).on('click', 'button', () => {
  bindViewB();
});


bindViewA();
bindViewB();

#demo {
  padding: 30px;
}

#viewA {
  margin-bottom: 10px;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="2053454d414e5449430d554960120e140e12" rel="noreferrer noopener nofollow">[email protected]</a>/dist/semantic.min.css">
<script src="https://cdn.jsdelivr.net/npm/<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="4132242c202f3528226c342801736f756f73" rel="noreferrer noopener nofollow">[email protected]</a>/dist/semantic.min.js"></script>

<div id="demo">
  <div id="viewA"></div>
  <div id="viewB"></div>
</div>