javascript - 在网站上打印当前年份的最短方法(Shortest way to print current year in a website)

Question

I need to update a few hundred static HTML pages that have the copyright date hard coded in the footer.

(我需要更新几百个静态HTML页面，这些页面的页脚中已硬编码了版权日期。)

I want to replace it with some JavaScript that will automatically update each year.

(我想用每年都会自动更新的JavaScript替换它。)

Currently I'm using:

(目前，我正在使用：)

<script type="text/javascript">var year = new Date();document.write(year.getFullYear());</script>

Is this as short as it gets?

(这是那么短吗？)

  ask by tpow translate from so

Answer 1

Here's the shortest I can get it:

(这是我能得到的最短的：)

<script>document.write(new Date().getFullYear())</script>

That will work in all browsers I've run across.

(这将适用于我所运行的所有浏览器。)

How I got there:

(我如何到达那里：)

• You can just call getFullYear directly on the newly-created Date , no need for a variable.

  (您可以直接在新创建的Date上直接调用getFullYear ，而不需要变量。)

  new Date().getFullYear() may look a bit odd, but it's reliable: the new Date() part is done first, then the .getFullYear() .

  (new Date().getFullYear()可能看起来有些奇怪，但是很可靠：首先完成new Date()部分，然后完成.getFullYear() 。)

• You can drop the type , because JavaScript is the default;

  (您可以删除type ，因为JavaScript是默认设置。)

  this is even documented as part of the HTML5 specification , which is likely in this case to be writing up what browsers already do.

  (这甚至被记录为HTML5规范的一部分，在这种情况下，很可能是在写出浏览器已经做过的事情。)

• You can drop the semicolon at the end for one extra saved character, because JavaScript has "automatic semicolon insertion," a feature I normally despise and rail against, but in this specific use case it should be safe enough.

  (您可以在最后一个额外的保存字符删除分号，因为JavaScript有“自动插入分号，”一个功能，我常轻视和对铁路，但在这种特定情况下使用它应该是足够安全的。)

It's important to note that this only works on browsers where JavaScript is enabled.

(重要的是要注意，这仅适用于启用了JavaScript的浏览器。)

Ideally, this would be better handled as an offline batch job ( sed script on *nix, etc.) once a year, but if you want the JavaScript solution, I think that's as short as it gets.

(理想情况下，最好将其作为脱机批处理作业（* nix上的sed脚本等）每年处理一次，但是如果您想要JavaScript解决方案，我认为它就这么短。)

(Now I've gone and tempted fate.)

(（现在，我走了，去吸引命运。）)