javascript - 为什么 Javascript getYear() 返回一个三位数？

Question

为什么这个 javascript 返回 108 而不是 2008？它得到正确的日期和月份，但不是年份？

myDate = new Date();
year = myDate.getYear();

年 = 108？

Answer 1

这是一个Y2K事情，只计算自 1900 年以来的年份。

getYear() 已被弃用，取而代之的是 getFullYear()，存在潜在的兼容性问题 - 来自 quirksmode :

To make the matter even more complex, date.getYear() is deprecated nowadays and you should use date.getFullYear(), which, in turn, is not supported by the older browsers. If it works, however, it should always give the full year, ie. 2000 instead of 100.

Your browser gives the following years with these two methods:

* The year according to getYear(): 108
* The year according to getFullYear(): 2008

Internet Explorer 和 Firefox 之间也存在实现差异，因为 IE 的 getYear() 实现被更改为表现得像 getFullYear() - 来自 IBM :

Per the ECMAScript specification, getYear returns the year minus 1900, originally meant to return "98" for 1998. getYear was deprecated in ECMAScript Version 3 and replaced with getFullYear().

Internet Explorer changed getYear() to work like getFullYear() and make it Y2k-compliant, while Mozilla kept the standard behavior.