注意：传入的dateTimeStamp时间戳以秒计时。如你想传以毫秒计时的值时先除1000
getDateDiff:function (dateTimeStamp) {
var minute = 60;
var hour = minute * 60;
var day = hour * 24;
var halfamonth = day * 15;
var month = day * 30;
var now = Date.parse(new Date())/1000 //有些特殊 不能使用 new Date()
var diffValue = now - dateTimeStamp;
if(diffValue < 0){return;}
var monthC =diffValue/month;
var weekC =diffValue/(7*day);
var dayC =diffValue/day;
var hourC =diffValue/hour;
var minC =diffValue/minute;
var result = ''
if(monthC >= 1){
result="" + parseInt(monthC) + "月前";
}
else if(weekC>=1){
result="" + parseInt(weekC) + "周前";
}
else if(dayC>=1){
result=""+ parseInt(dayC) +"天前";
}
else if(hourC>=1){
result=""+ parseInt(hourC) +"小时前";
}
else if(minC>=1){
result=""+ parseInt(minC) +"分钟前";
}else{
result="刚刚";
}
return result;
}//时间戳转化为几天前，几小时前，几分钟前
