Question

有时，当您通过新日期（年，月，日）在IE10和IE11中创建新日期时，返回的值包含时间。例如

new Date(2010,10,7)

有时会导致日期值为： 2010年11月6日23:00

而不是预期值： 2010年11月7日00:00

以下是一些说明此问题的示例代码：

<!DOCTYPE html>
<html>
<body>

<script>    

    document.write(new Date(2013, 10, 3) + "<br>");
    document.write(new Date(2013, 2, 10) + "<br>");
    document.write(new Date(2012, 10, 3) + "<br>");
    document.write(new Date(2012, 2, 10) + "<br>");
    document.write(new Date(2012, 10, 7) + "<br>");
    document.write(new Date(2012, 2, 14) + "<br>");

    document.write("<br>Checking for new Date() with DST issues: <br>");

    for (var working = new Date(2014, 1, 1) ; working.getFullYear() > 2009;)
    {
        document.write(".");
        var newDt = new Date(working.valueOf());

        var dayOfMonth = newDt.getDate();
        dayOfMonth -= 1;
        var nextYear = newDt.getFullYear();
        var nextMonth = newDt.getMonth();

        var newDate = new Date(nextYear, nextMonth, dayOfMonth);


        if (newDate.getHours() > 0)
        {
            document.write("<br>" + newDate + "  from:" + nextYear + "," + nextMonth + "," + dayOfMonth + "<br>");


            dayOfMonth--;
            newDate = new Date(nextYear, nextMonth, dayOfMonth); //skip over this date
        }

        if (newDate.getDate() === 1)
        {
            document.write(".");
        }

        working = newDate;
    }
    document.write("<br>done.");

</script>

</body>
</html>

IE10＆amp;的输出IE11将如下所示：

Sun Nov 3 00:00:00 CDT 2013
Sun Mar 10 00:00:00 CST 2013
Sat Nov 3 00:00:00 CDT 2012
Sat Mar 10 00:00:00 CST 2012
Wed Nov 7 00:00:00 CST 2012
Wed Mar 14 00:00:00 CDT 2012

Checking for new Date() with DST issues: 
............................................................................................
Sat Nov 2 23:00:00 CST 2013 from:2013,10,3
.....................................................................................................................................................................................................................................................
Sun Mar 10 01:00:00 CDT 2013 from:2013,2,10
..................................................................................................................................
Fri Nov 2 23:00:00 CST 2012 from:2012,10,3
.....................................................................................................................................................................................................................................................
Sat Mar 10 01:00:00 CDT 2012 from:2012,2,10
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Sat Nov 6 23:00:00 CST 2010 from:2010,10,7
.....................................................................................................................................................................................................................................................
Sun Mar 14 01:00:00 CDT 2010 from:2010,2,14
...........................................................................
done.

在firefox，ie9和chrome中执行的相同代码不会创建带有时间值的日期。我很确定这是一个浏览器错误，但我没有在其他地方看到它。

新日期（年，月，日）在ie10和ie11中的工作方式不同DST更改附近的日期有时会有时间值

0 个答案: