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Summary
DescriptionJavaScript getYear Method Problem.png
English: Webpage screenshots showing the
JavaScript .getYear method problem. It depicts the so-called
Year 2000 problem .
The results of the .getYear method are different with Internet Explorer 6-8 and the other modern browsers:
IE3, IE9+, other modern browsers: .getYear always returns a 2-digit value that is the stored year minus 1900).
IE4-8, other modern browsers:
.getYear returns a 2-digit value that is the stored year minus 1900) for the years 1900 through 1999;
it returns the 4-digit full year for dates outside that range.
.getYear is now obsoleted, but supported for backward compatibility by all modern browsers.
.getFullYear is not supported before IE6. With those that support it, the 4-digit full year is always returned. This method is currently recommended.
HTML and JavaScript code (by Tomchen1989 under CC0 1.0 )
<!DOCTYPE html>
< html lang = "en" >
< head >
< title > JavaScript .getYear Method Problem</ title >
< meta http-equiv = "content-type" content = "text/html; charset=UTF-8" />
< style >
table { border-collapse : collapse ;}
th , td { border : 1 px solid #000 ;}
</ style >
</ head >
< body >
< table >
< tr >
< th > Real year</ th >
< th > 1858</ th >< th > 1990</ th >< th > 1994</ th >< th > 2000</ th >< th > 2007</ th >
</ tr >
< tr >
< th > .getYear() result</ th >
< td id = "getyear1" ></ td >< td id = "getyear2" ></ td >< td id = "getyear3" ></ td >< td id = "getyear4" ></ td >< td id = "getyear5" ></ td >
</ tr >
< tr >
< th > .getFullYear() result</ th >
< td id = "getfullyear1" ></ td >< td id = "getfullyear2" ></ td >< td id = "getfullyear3" ></ td >< td id = "getfullyear4" ></ td >< td id = "getfullyear5" ></ td >
</ tr >
</ table >
< script >
var dates = [ new Date ( "1858, 1, 1" ), new Date ( "1990, 1, 1" ), new Date ( "1994, 1, 1" ), new Date ( "2000, 1, 1" ), new Date ( "2007, 1, 1" )];
for ( var i = 0 ; i < dates . length ; i ++ ) {
document . getElementById ( "getyear" + ( i + 1 )). innerHTML = dates [ i ]. getYear ();
document . getElementById ( "getfullyear" + ( i + 1 )). innerHTML = dates [ i ]. getFullYear ();
}
</ script >
</ body >
</ html >
BTW, if you want to return a 2-digit year value (only for AD , 3, 203, 1803, 1903 and 2003 all return "03", that are the last two digits) in modern browsers, you may try:
( "0" + dateObj . getFullYear (). toString ()). slice ( - 2 );
References:
Date
2 May 2014, 20:25:38
Source
Own work
Author
Tomchen1989
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication .
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.en CC0 Creative Commons Zero, Public Domain Dedication false false
Captions English
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Simplified Chinese
显示 JavaScript .getYear 方法问题的网页屏幕截图。 它描述了所谓的 2000 年问题。 .getYear 方法的结果与 Internet Explorer 6-8 和其他现代浏览器不同:IE3、IE9+、其他现代浏览器:.getYear 始终返回一个 2 位数的值,即存储的年份减去 1900)。 IE4-8,其他现代浏览器:.getYear 返回 1900 年到 1999 年的 2 位数字值,即存储的年份减去 1900); 对于该范围之外的日期,它返回 4 位数的全年。
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