mui-switch VUE取值

通过vue 动态循环画的选项卡,请问怎么取选项目卡中某项开关的值呢
<div class="mui-slider-group">
<div :id="setTabId(item)" class="mui-slider-item mui-control-content" v-for="item in Newitems">
<div id="scroll1" class="mui-scroll-wrapper">
<div class="mui-scroll">
<form class="mui-input-group" id="form"
style="margin: 10px;padding:0 10px;border: 1px solid rgba(235, 235, 235, 1);border-radius:8px;">

        <div class="mui-input-row">  
            <label>是否选中：</label>  
            <div class="mui-switch mui-active">  
                    <div class="mui-switch-handle" v-model="item.flag"></div>  
            </div>  
        </div>