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  <div class="layui-col-md9 site-content">
    <h1 class="site-h1"><i class="layui-icon layui-icon-transfer"></i> 穿梭框组件文档 - layui.transfer</h1>
    <blockquote class="layui-elem-quote layui-text">
      穿梭框组件的初衷来源于 layui 社区的扩展组件平台，并且在 layui 2.5.0 的版本中开始登场。其适用的业务场景多样，不妨一试。
    </blockquote>
    <blockquote class="layui-elem-quote">
      模块加载名称：<em>transfer</em>
    </blockquote>


    <fieldset class="layui-elem-field layui-field-title site-title">
      <legend><a name="use">快速使用</a></legend>
    </fieldset>
    <div class="site-text">
      <p>transfer 组件可以进行数据的交互筛选</p>
      <pre class="layui-code" lay-title="layui.transfer小例子">
&lt;!DOCTYPE html>
&lt;html>
&lt;head>
  &lt;meta charset="utf-8">
  &lt;title>穿梭框组件&lt;/title>
  &lt;link rel="stylesheet" href="../src/css/layui.css">
&lt;/head>
&lt;body>
  &lt;div id="test1">&lt;/div>
  &lt;script src="../src/layui.js">&lt;/script>
  &lt;script>
  layui.use('transfer', function(){
    var transfer = layui.transfer;

    //渲染
    transfer.render({
      elem: '#test1'  //绑定元素
      ,data: [
        {"value": "1", "title": "李白", "disabled": "", "checked": ""}
        ,{"value": "2", "title": "杜甫", "disabled": "", "checked": ""}
        ,{"value": "3", "title": "贤心", "disabled": "", "checked": ""}
      ]
      ,id: 'demo1' //定义索引
    });
  });
  &lt;/script>
&lt;/body>
&lt;/html>
      </pre>
    </div>

    <fieldset class="layui-elem-field layui-field-title site-title">
      <legend><a name="options">基础参数</a></legend>
    </fieldset>
    <div class="site-text">
      <p>目前 transfer 组件提供以下基础参数，可根据需要进行相应的设置</p>
      <table class="layui-table">
        <colgroup>
          <col width="120">
          <col>
          <col width="120">
          <col width="200">
        </colgroup>
        <thead>
          <tr>
            <th>参数选项</th>
            <th>说明</th>
            <th>类型</th>
            <th>默认值</th>
          </tr>
        </thead>
        <tbody>
          <tr>
            <td>elem</td>
            <td>指向容器选择器</td>
            <td>String/Object</td>
            <td>-</td>
          </tr>
          <tr>
            <td>title</td>
            <td>穿梭框上方标题</td>
            <td>Array</td>
            <td>['标题一', '标题二']</td>
          </tr>
          <tr>
            <td>data</td>
            <td>数据源</td>
            <td>Array</td>
            <td>[{}, {}, …]</td>
          </tr>
          <tr>
            <td>parseData</td>
            <td>用于对数据源进行格式解析</td>
            <td>Function</td>
            <td><a href="#parseData">详见数据源格式解析</a></td>
          </tr>
          <tr>
            <td>value</td>
            <td>初始选中的数据（右侧列表）</td>
            <td>Array</td>
            <td>-</td>
          </tr>
          <tr>
            <td>id</td>
            <td>设定实例唯一索引，用于基础方法传参使用。</td>
            <td>String</td>
            <td>-</td>
          </tr>
          <tr>
            <td>showSearch</td>
            <td>是否开启搜索</td>
            <td>Boolean</td>
            <td>false</td>
          </tr>
          <tr>
            <td>width</td>
            <td>定义左右穿梭框宽度</td>
            <td>Number</td>
            <td>200</td>
          </tr>
          <tr>
            <td>height</td>
            <td>定义左右穿梭框高度</td>
            <td>Number</td>
            <td>340</td>
          </tr>
          <tr>
            <td>text</td>
            <td>
              自定义文本，如空数据时的异常提示等。
              <pre class="layui-code">
text: {
  none: '无数据' //没有数据时的文案
  ,searchNone: '无匹配数据' //搜索无匹配数据时的文案
}
              </pre>
            </td>
            <td>Object</td>
            <td>-</td>
          </tr>
          <tr>
            <td>onchange</td>
            <td>左右数据穿梭时的回调</td>
            <td>Function</td>
            <td><a href="#onchange">详见穿梭时的回调</a></td>
          </tr>
        </tbody>
      </table>
    </div>
    <fieldset class="layui-elem-field layui-field-title site-title">
      <legend><a name="parseData">数据源格式解析</a></legend>
    </fieldset>
    <div class="site-text">
      <p>
        数据格式解析的回调函数，用于将任意数据格式解析成 transfer 组件规定的数据格式，以下是合法的数据格式如下：
      </p>

      <pre class="layui-code" lay-title="合法的数据格式" lay-skin="notepad">
[
  {"value": "1", "title": "李白", "disabled": "", "checked": ""}
  ,{"value": "2", "title": "杜甫", "disabled": "", "checked": ""}
  ,{"value": "3", "title": "贤心", "disabled": "", "checked": ""}
]
      </pre>

      <p>然而很多时候你返回的数据格式可能并不符合规范，比如：</p>
      <pre class="layui-code" lay-title="不符合规范的数据格式" lay-skin="notepad">
[
  {"id": "1", "name": "李白"}
  ,{"id": "2", "name": "杜甫"}
  ,{"id": "3", "name": "贤心"}
]
      </pre>
      <p>那么您需要将其解析成 transfer 组件所规定的数据格式：</p>
      <pre class="layui-code" lay-title="code">
transfer.render({
  elem: '#text1'
  ,data: [
    {"id": "1", "name": "李白"}
    ,{"id": "2", "name": "杜甫"}
    ,{"id": "3", "name": "贤心"}
  ]
  ,parseData: function(res){
    return {
      "value": res.id //数据值
      ,"title": res.name //数据标题
      ,"disabled": res.disabled  //是否禁用
      ,"checked": res.checked //是否选中
    }
  }
});
      </pre>
    </div>
    <fieldset class="layui-elem-field layui-field-title site-title">
      <legend><a name="onchange">左右穿梭的回调</a></legend>
    </fieldset>
    <div class="site-text">
      <p>当数据在左右穿梭时触发，回调返回当前被穿梭的数据</p>
      <pre class="layui-code" lay-title="例子">
transfer.render({
  elem: '#text'
  ,data: [] //数据源
  ,onchange: function(data, index){
    console.log(data); //得到当前被穿梭的数据
    console.log(index); //如果数据来自左边，index 为 0，否则为 1
  }
});
      </pre>
    </div>

    <fieldset class="layui-elem-field layui-field-title site-title">
      <legend><a name="method">基础方法</a></legend>
    </fieldset>
    <div class="site-text">
      <p>基础用法是组件关键组成部分，目前所开放的所有方法如下：</p>
      <pre class="layui-code">
var transfer = layui.transfer;

transfer.set(options); //设定全局默认参数。options 即各项基础参数
transfer.getData(id); //获得右侧数据
transfer.reload(id, options); //重载实例
    </div>
    <fieldset class="layui-elem-field layui-field-title site-title">
      <legend><a name="getData">获得右侧数据</a></legend>
    </fieldset>
    <div class="site-text">
      <p>穿梭框的右侧数据通常被认为是选中数据，因此你需要得到它并提交到后台。</p>
      <pre class="layui-code" lay-title="例子">
transfer.render({
  elem: '#test'
  ,data: []
  ,id: 'demo1' //定义索引
});

//获得右侧数据
var getData = transfer.getData('demo1');
      </pre>
    </div>

    <fieldset class="layui-elem-field layui-field-title site-title">
      <legend><a name="reload">实例重载</a></legend>
    </fieldset>
    <div class="site-text">
      <p>重载一个已经创建的组件实例，被覆盖新的基础属性</p>
      <pre class="layui-code" lay-title="例子">
transfer.render({
  elem: '#test'
  ,data: []
  ,id: 'demo1' //定义索引
});

 //可以重载所有基础参数
transfer.reload('demo1', {
  title: ['新列表1', '新列表2']
});
      </pre>
    </div>
    <fieldset class="layui-elem-field layui-field-title site-title">
      <legend><a name="docend">结语</a></legend>
    </fieldset>
    <div class="site-text">
      <p>穿梭框组件极易上手，在浩瀚的业务需求中，值得一用。</p>
    </div>

    <div class="layui-elem-quote">
  <p>layui - 在每一个细节中，用心与你沟通</p>
</div>

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