js获取时间后转换为指定格式字符串

实现效果"2020/5/13 下午5:10:56"转换为"202051351056"

var oDate = new Date();
var nowTime = oDate.toLocaleString(); //格式："2020/5/13 下午5:10:56"
var datetime = nowTime.substring(0,10)+nowTime.substring(12);//截取日期时分秒  格式："2020/5/13 5:10:56"
//var localTime= oDate.getTime();时间戳
//var reg = new RegExp("/",":");
datetime=datetime.replace(' ', "");//格式："2020/5/135:10:56"
datetime=datetime.replace(new RegExp("/","gm"),"");//格式："20205135:10:56"
datetime=datetime.replace(/:/g, "");//格式："202051351056"

欢迎对其进行优化