js实现获取选中checkbox的值

var bookVersionId = [];
   var examVirtualSetResultId;
   $.each($('input[type=checkbox]:checked'),function(i,itesm){
    examVirtualSetResultId = $(itesm).attr('data-type');
    var examResultIds = $(itesm).attr('data-typeid');
    var userCode = $(itesm).attr('data-code');
    var examResultIdObj = new Object();//创建对象
    examResultIdObj.examResultId = examResultIds;
    examResultIdObj.userCode = userCode;
    console.log(examResultIdObj);
    bookVersionId.push(examResultIdObj);//把对象push到数组中
    console.log(bookVersionId);
   });
   //传参数
   obj.examVirtualSetResultId = examVirtualSetResultId;
   console.log(examVirtualSetResultId);
   obj.studentExamSummaries = bookVersionId;
   getDeatil(obj);
获取选中checked的值