【www.bbyears.com--js教程】
项目需要获取本周及任意一天的周一及周末 需格式化，示例代码如下：
代码如下"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script type="text/javascript"language="javascript">
/**
* @author zhuyangxing
*/
(function() {
functionutil_date() {
var_today=newDate();
this.today=_today;
this.year=_today.getYear()+1900;//当前年份
this.Month_a=_today.getMonth();
this.Month=this.Month_a+1;//当前月份
this.day=_today.getDate();//当前日期
this.date=_today.getDay()==0?7:_today.getDay();//本周第几天 因系统会把周日作为第0天
this.Monday="";
this.Sunday="";
this.day_one="";
}
Date.prototype.pattern=function(fmt) {
varo = {
"M+":this.getMonth()+1,//月份
"d+":this.getDate(),//日
"h+":this.getHours()%12 == 0 ? 12 :this.getHours()%12,//小时
"H+":this.getHours(),//小时
"m+":this.getMinutes(),//分
"s+":this.getSeconds(),//秒
"q+": Math.floor((this.getMonth()+3)/3),//季度
"S":this.getMilliseconds()//毫秒
};
varweek = {
"0":"/u65e5",
"1":"/u4e00",
"2":"/u4e8c",
"3":"/u4e09",
"4":"/u56db",
"5":"/u4e94",
"6":"/u516d"
};
if(/(y+)/.test(fmt)){
fmt=fmt.replace(RegExp.$1, (this.getFullYear()+"").substr(4 - RegExp.$1.length));
}
if(/(E+)/.test(fmt)){
fmt=fmt.replace(RegExp.$1, ((RegExp.$1.length>1) ? (RegExp.$1.length>2 ?"/u661f/u671f":"/u5468") :"")+week[this.getDay()+""]);
}
for(varkino){
if(newRegExp("("+ k +")").test(fmt)){
fmt = fmt.replace(RegExp.$1, (RegExp.$1.length==1) ? (o[k]) : (("00"+ o[k]).substr((""+ o[k]).length)));
}
}
returnfmt;
},
util_date.prototype = {
newToday :function(_today){
this.today=_today;
this.year=_today.getYear()+1900;//当前年份
this.Month_a=_today.getMonth();
this.Month=this.Month_a+1;//当前月份
this.day=_today.getDate();//当前日期
this.date=_today.getDay()==0?7:_today.getDay();//本周第几天 因系统会把周日作为第0天
this.Monday="";
this.Sunday="";
this.day_one="";
},
getMonday:function(){
if(this.Monday.length!=0){
returnthis.Monday;
}else{
var_monday =newDate(this.year,this.Month_a,this.day-this.date+1);
this.Monday = _monday;
return_monday;
}
},
getSunday:function(){
if(this.Sunday.length!=0){
returnthis.Sunday;
}else{
var_Sunday =newDate(this.year,this.Month_a,this.day-this.date+7);
this.Sunday = _Sunday;
return_Sunday;
}
},
getPreviousMonday:function(Monday){
var_monday =newDate(Monday.getYear()+1900,Monday.getMonth(),Monday.getDate()-7);
return_monday;
},
getPreviousSunday:function(Monday){
var_Sunday =newDate(Monday.getYear()+1900,Monday.getMonth(),Monday.getDate()-1);
this.Sunday = _Sunday;
return_Sunday;
},
getNextMonday:function(Monday){
var_monday =newDate(Monday.getYear()+1900,Monday.getMonth(),Monday.getDate()+7);
return_monday;
},
getNextSunday:function(Monday){
var_Sunday =newDate(Monday.getYear()+1900,Monday.getMonth(),Monday.getDate()+13);
this.Sunday = _Sunday;
return_Sunday;
}
};
window.util_date =newutil_date();
})();
document.write(window.util_date.getMonday().pattern("yyyy-MM-dd"));
</script>
如果需要可直接在项目中引入该文件 使用window.util_date.getMonday().pattern("yyyy-MM-dd");可获得2017-1-24类型的字符串
代码如下 window.util_date.newToday("2017-1-1");设置当前日期