通过layui获取表单中的数据

layer.open({
      type: 2,
      title: '编辑音乐',
      shadeClose: false,
      shade: 0.8,
      btnAlign: 'c',
      area: ['480px', '315px'],
     btn:['保存修改','取消修改'],
     yes:function(index,layero){
        var form = $(layero).find("iframe")[0].contentWindow.document.getElementById("editForm")
     },
     btn2:function(index,layero){

     },
      content: [getActionUrlPrefix()+"toEditWin?model.mlId="+mlId, 'no']
    });