原理是取中间的毫秒数，再转换成js的Date类型function ChangeDateFormat(val) {    if (val != null) {        var date = new Date(parseInt(val.replace("/Date(", "").replace(")/", ""), 10));        //月份为0-11，所以+1，月份小于10时补个0        var month = date.getMonth() + 1 < 10 ? "0" + (date.getMonth() + 1) : date.getMonth() + 1;        var currentDate = date.getDate() < 10 ? "0" + date.getDate() : date.getDate();        return date.getFullYear() + "-" + month + "-" + currentDate;    }    return "";}