jquery获取checkbox的值

<div class="form-group">
                        <label class="col-md-3 control-label">职务</label>
                        <div class="col-md-9">

                            <foreach name="arr2" item="v" >
                                <div class="checkbox">
                                    <label>
                                        <input type="checkbox"<?php
                                            foreach($arr as $kk=>$vv){
                                                    foreach($vv['role_name'] as $ko=>$vo){
                                                        if($vo==$v['role_name']){
                                                            echo "checked";
                                                        }
                                                    }
                                                }
                                        ?>  name="checkbox" value="{$v.r_id}"> {$v.role_name}
                                    </label>
                                </div>
                            </foreach>

                        </div>
                    </div>

 

 

jquery代码：

<script>
        $("#sub").click(function () {
            var username = $("#username").val();

            var spCodesTemp = "";
            $('input:checkbox[name="checkbox"]:checked').each(function(i){
                if(0==i){
                    spCodesTemp = $(this).val();
                }else{
                    spCodesTemp += (","+$(this).val());
                }
            });
            alert(spCodesTemp);

        });
    </script>

 

这其中的  [name="checkbox"]     引号里代表的就是name的值