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[Java教程]js计算系统当前日期是星期几的几种方法


方法一:

// 计算系统当前是星期几var str = "今天是星期" + "日一二三四五六".charat(new date().getday());

方法二:

var a = new array("日", "一", "二", "三", "四", "五", "六");var week = new date().getday();var str = "今天是星期"+ a[week];alert(str);

方法三:

var str = "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(str);

方法四:

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";}alert(str);

 

当然这四种方法的完美程度是一目了然的。