Jquery 取得checkbox值

页面代码：
<table style="background-color:#E1EFFD;width:90%">
   <tr><td>网友微博需满足:</td></tr>
   <tr>
     <td style="padding-left:100px;">
          <input type="checkbox" name="chk_things[]" value="1"/>&nbsp;已上传头像&nbsp;
     </td>
   </tr>
   <tr>
                                    <td style="padding-left:100px;">
          <input type="checkbox"  name="chk_things[]" value="2"/>&nbsp;已绑定手机&nbsp;
                                    </td>
                                </tr>
                                <tr>
                                    <td style="padding-left:100px;">
          <input type="checkbox" name="chk_things[]" value="3" />&nbsp;注册时间超过&nbsp;
          <input type="text" id="input_reg_time" style="width:80px;" name="f_time">天
                                    </td>
                                </tr>
                                <tr>
                                    <td style="padding-left:100px;">
        <input type="checkbox" name="chk_things[]" value="4"/>&nbsp;微博数超过&nbsp;
                                        <input type="text" id="input_weibo_count" style="width:80px;" name="weibo_count"/>
                                    </td>
                                </tr>
                                <tr>
                                    <td style="padding-left:100px;">
        <input type="checkbox" name="chk_things[]" value="5"/>&nbsp;粉丝数超过&nbsp;
        <input type="text" id="input_fans_count" style="width:80px;" name="fans_count"/>
                                    </td>
                                </tr>
                            </table>
//判断checkbox当前是否选中
    var chk_faceicons = $("input[name='faceicons']").attr("checked");
    if(chk_faceicons == true){
        alert('选中状态，而且true不能写成“true”,因为带引号就成字符串了');
    }else if(chk_faceicons == false){
        alert("没有选中");
    }


//把页面中的checkbox选择项拼成字符串传递过去
    var checks = "";
    $("input[name='chk_things[]']").each(function(){
        if($(this).attr("checked") == true){
            checks += $(this).val() + "|";
        }
    })

//验证reg_days是否输入的是数字
    var reg_days = $('#rtime').val();
    if(reg_days != ''){
        if(!/^[-]?\d+$/.test(reg_days)){
            alert("请准确输入所填项！");
            return false;
        ｝