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//現在の日付と時刻を取得
var date = new Date();
//4桁の西暦年を取得
var year = date.getFullYear();
//月を取得
var month = date.getMonth()+1;
//日付取得
var day = date.getDate();
//曜日取得
var week = date.getDay();
var weekDay = new Array("日","月"," 火","水","木","金","土","日");
//時
var hour = date.getHours();
//分
var minute = date.getMinutes();
//秒
var second = date.getSeconds();
 
document.write("西暦"+year+"年"+month+"月"+day+"日"+weekDay[week]+"曜日<br />");
document.write(hour+"時",+minute+"分"+second+"秒");