Select2下拉框示例

在項目中,須要用到下拉框,因而找到了這個比較好用的select2插件,功能很強大,幾乎能知足全部的下拉選擇需求,選中以後能夠點擊取消選擇的,另,本例連同ajax獲取選擇的數據一併提供。javascript

shili

<!DOCTYPE html>
<html>
<head>
    <meta charset="gb2312">
    <title>添加極限活動</title>
    <link href="http://libs.baidu.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet">
    <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
    <script src="http://libs.baidu.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
    <script src="http://cdn.bootcss.com/select2/4.0.2/js/select2.js"></script>
    <link href="http://cdn.bootcss.com/select2/4.0.2/css/select2.css" rel="stylesheet" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<script>
    $(document).ready(function(){

 });

    function transform(obj){
    var arr = [];
    for(var item in obj){
        arr.push(obj[item]);
    }
    return arr;
}

    // 提交表單
      function check_form()
      {
        var event_id       = $.trim($('#event_id').val());
        // var str = $('#sel_menu2 option:selected').val();//選中的值,只能獲取一個
        var selectedValues = [];    // 獲取多選的值
       $("#sel_menu2 :selected").each(function(){
          selectedValues.push($(this).val()); 
       });

        if(!event_id  || !selectedValues)
        {
          alert('活動ID或標籤不能爲空!');
          return false;
        }

        // var form_data = $('#form').serialize();

        // 異步提交數據到action/add_action.php頁面
        $.ajax(
        {
          url: "action/add_action.php",
          data:{"event_id":event_id, "tags":selectedValues,"act":"add"},
          type: "post",
          beforeSend:function()
          {
            $("#tip").html("<span style='color:blue'>正在處理...</span>");
            return true;
          },
          success:function(data)
          {
            if(data > 0)
            {
              $("#tip").html("<span style='color:blueviolet'>恭喜,添加成功!</span>");
              // document.location.href='system_notice.php'
               //  location.reload();
            }
            else
            { 
               $("#tip").html("<span style='color:red'>失敗,請重試</span>");
              alert('操做失敗');
            }
          },
          error:function()
          {
            alert('請求出錯'); 
          },
          complete:function()
          {
            $('#acting_tips').hide();
          }          
        });

        return false;
      }
 </script>  
<body>
<div class="container" width="500px;">

<form method="post" action="" class="form-horizontal" role="form" onsubmit="return check_form()" style="margin: 20px;">
    <div class="form-group">
        <label for="inputPassword3" class="col-sm-2 control-label">活動ID</label>
        <div class="col-sm-10">
            <input type="text" class="form-control"  name="event_id" id="event_id" placeholder="請輸入活動ID">
        </div>
    </div>
    <div class="form-group">
        <label for="inputPassword3" class="col-sm-2 control-label">活動標籤</label>
        <!--
        <div class="col-sm-10">
            <input type="text" class="form-control" id="tags" placeholder="回車肯定">
        </div>

        -->
        <div class="col-sm-10">
        <select id="sel_menu2" multiple="multiple" name="mytags" class="form-control">
            <optgroup label="選擇標籤">
                <option value="1">用戶管理</option>
                <option value="2">角色管理</option>
                <option value="3">部門管理</option>
                <option value="4">菜單管理</option>
            </optgroup>
        </select>
        </div>
    </div>

    <div class="form-group">
        <div class="col-sm-offset-2 col-sm-10">
            <button type="submit" class="btn btn-default">添加</button>
            <span id="tip"></span>
        </div>
    </div>
</form>
</div>
<script type="text/javascript">
    //多選
    $("#sel_menu2").select2({
        tags: true,
       // allowClear: true,
        maximumSelectionLength: 5  //最多可以選擇的個數
    });

</script>
</body>
</html>

###action/add_action.php接收頁面php

<?php
/**
 * 獲取提交的數據
 *
 */

// 獲取參數
$tags     = $_POST['tags'];
$event_id = $_POST['event_id'];

// 在該頁面處理以後,返回數據
echo 1;

##列表頁面 輸入圖片說明css

###列表html頁面html

<!DOCTYPE html>
<html>
<head>
    <meta charset="gb2312">
    <title>Demo活動列表</title>
    <link href="http://libs.baidu.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet">
    <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
    <script src="http://libs.baidu.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<script>
    // 提交表單
    function delete_event(event_id)
    {
        if(!event_id)
        {
            alert('Error!');
            return false;
        }
        // var form_data = new Array();

        $.ajax(
                {
                    url: "action/event_action.php",
                    data:{"event_id":event_id, "act":"del"},
                    type: "post",
                    beforeSend:function()
                    {
                        $("#tip").html("<span style='color:blue'>正在處理...</span>");
                        return true;
                    },
                    success:function(data)
                    {
                        if(data > 0)
                        {
                            alert('操做成功');
                            $("#tip").html("<span style='color:blueviolet'>恭喜,刪除成功!</span>");

                            // document.location.href='world_system_notice.php'
                             location.reload();
                        }
                        else
                        {
                            $("#tip").html("<span style='color:red'>失敗,請重試</span>");
                            alert('操做失敗');
                        }
                    },
                    error:function()
                    {
                        alert('請求出錯');
                    },
                    complete:function()
                    {
                        // $('#tips').hide();
                    }
                });

        return false;
    }
</script>
<body>
<div class="container">
<table class="table table-hover table-bordered" style="margin: 20px;">
    <caption>列表頁面Demo</caption>
    <thead>
    <tr>
        <th>id</th>
        <th>活動ID</th>
        <th>標籤</th>
        <th>編輯ID</th>
        <th>添加時間</th>
        <th>操做</th>
    </tr>
    </thead>
    <tbody>
    
    <tr>
        <td>1</td>
        <td>123456</td>
        <td>ios,php,Laravel</td>
        <td>15698762</td>
        <td>2016-06-01 18:14:12</td>
        <td><button type="button" class="btn btn-danger" onclick="return delete_event({event_id})">刪除</button></td>
    </tr>

    </tbody>
</table>
    <!-- 此處能夠添加分頁 --> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
   </span>
</div>
</body>
</html>
</html>
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