星期几的不同脚本写法(推荐)

var str = "";var week = new Date().getDay();if (week == 0) {    str = "今天是星期日";} else if (week == 1) {    str = "今天是星期一";} else if (week == 2) {    str = "今天是星期二";} else if (week == 3) {    str = "今天是星期三";} else if (week == 4) {    str = "今天是星期四";} else if (week == 5) {    str = "今天是星期五";} else if (week == 6) {    str = "今天是星期六";}

var str1 = "今天是星期";var week = new Date().getDay();switch (week) {    case 0 :        str1 += "日";        break;    case 1 :        str1 += "一";        break;    case 2 :        str1 += "二";        break;    case 3 :        str1 += "三";        break;    case 4 :        str1 += "四";        break;    case 5 :        str1 += "五";        break;    case 6 :        str1 += "六";        break;}alert(str1);

var str = "今天是星期" + "日一二三四五六".charAt(new Date().getDay());alert(str);