很早之前在CSDN上发的博客,现在CSDN上得少了,就把这个转到园子里来
//重写toString方法,将时间转换为Y-m-d H:i:s格式
Date.prototype.toString = function(){
return this.getFullYear() + "-" + (this.getMonth()+1) + "-" + this.getDate() + " " + this.getHours() + ":" + this.getMinutes() + ":" + this.getSeconds();
}
//格式化时间字符串
Date.prototype.toFormatString = function(format){
if(format == ""){
return this.toString();
}
var str = '';
str = format.replace(/Y|y/,this.getFullYear())
.replace(/M|m/,this.getMonth() + 1)
.replace(/D|d/,this.getDate())
.replace(/H|h/,this.getHours())
.replace(/I|i/,this.getMinutes())
.replace(/S|s/,this.getSeconds());
return str;
}
//在当前时间上添加年数
Date.prototype.addYear = function(years){
var cyear = this.getFullYear();
cyear += years;
this.setYear(cyear);
return this;
}
//在当前时间上添加天数
Date.prototype.addDay = function(days){
var cd = this.getDate();
cd += days;
this.setDate(cd);
return this;
}
//在当前时间上添加月数
Date.prototype.addMonth = function(months){
var cm = this.getMonth();
cm += months;
this.setMonth(cm);
return this;
}
//将php时间格式(Y-m-d H:i:s)转化为js日期对象
function phpDateToJsDate(phpDate){
if(phpDate == ""){
return new Date();
}
return new Date(Date.parse(phpDate.replace(/-/g,"/")));
}
//获取当前周的第一天
Date.prototype.firstOnWeek = function(){
this.setTime(this.getTime() - 24 * 60 * 60 * 1000 * (this.getDay() - 1));
return this;
}