关于JS显示星期的问题

Question

var date = new Date();   var weekday=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"]; var mynum=date.getDay(1)  var timeStr = '';   timeStr = date.getFullYear() + "年" ;    timeStr += date.getMonth() + 1 +"月";     timeStr += date.getDate()+"日";    timeStr += weekday[mydate.getDay(1)];  document.write(timeStr);为什么这样子显示不了星期一var date = new Date();   var weekday=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"]; var mynum=date.getDay(1)  var timeStr = '';   timeStr = date.getFullYear() + "年" ;    timeStr += date.getMonth() + 1 +"月";     timeStr += date.getDate()+"日";    timeStr += weekday[mynum];  document.write(timeStr);这样子可以显示星期一了，为什么呢另外我年月日没写就自动显示了，求解

Answer 1

mydate没有定义就使用

Answer 2

你mydate没定义啊，之前定义的是date=new Date()；mydate改成date就好了；

另外年月日不是写了date.getFullYear+"年"这些吗；timeStr += XXX这个是自相加，timerStr=timeStr+XXX，所以年月日就会显示了

Answer 3

  timeStr += weekday[mydate.getDay(1)]; 与 timeStr += weekday[mynum]; 有区别！将timeStr += weekday[mydate.getDay(1)]; 改成date.getDay(1)就可以了！