[php]
//取得上一個星期天
function getLastWeekday( date , weekday ) { // 0 = sunday, 1 = monday, … , 6 = saturday
var d = new Date(date);
d.setDate( d.getDate() + weekday – d.getDay() ); // move to last of given weekday
return d;
}
function DateToString(d){
//var datestring = ("0" + d.getDate()).slice(-2) + "-" + ("0"+(d.getMonth()+1)).slice(-2) + "-" +
// d.getFullYear() + " " + ("0" + d.getHours()).slice(-2) + ":" + ("0" + d.getMinutes()).slice(-2);
var datestring = (d.getFullYear()) +"-"+ ("0"+(d.getMonth()+1)).slice(-2)+"-"+("0" + d.getDate()).slice(-2);
// var datestring = ("0" + d.getDate()).slice(-2) + "-" + ("0"+(d.getMonth()+1)).slice(-2) + "-" +
// d.getFullYear() + " " + ("0" + d.getHours()).slice(-2) + ":" + ("0" + d.getMinutes()).slice(-2);
return datestring;
}
var saturday = getLastWeekday( new Date() , 6 );
var sunday = getLastWeekday( saturday , 0 );
//var sundayString=dateFormat(sunday, "yyyy-mm-dd" ); //"dddd, mmmm dS, yyyy, h:MM:ss TT");
console.log(DateToString(sunday));
[/php]
輸出：
2020-02-16