SOURCE

layui.form.render('select')

xmSelect.render({
    el: '#xm',
    data: [
        { name: '北京', value: 1 },
    ]
})

<div style="margin: 20px">
    <label class="layui-form-label">选择框</label>
    <div class="layui-input-block">
        <select name="city" lay-verify="required">
            <option value=""></option>
            <option value="0">北京</option>
            <option value="1">上海</option>
            <option value="2">广州</option>
            <option value="3">深圳</option>
            <option value="4">杭州</option>
        </select>
    </div>

    <div id="xm"></div>
</div>