获取字符串中的最后一个数字 (JavaScript)
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Getting the last number in a string (JavaScript)
提问by Chris Turner
var str = "7-Dec-1985"var str = "12-Jan-1703"var str = "18-Feb-1999"
var str = "7-Dec-1985"var str = "12-Jan-1703"var str = "18-Feb-1999"
How would I got about pulling just the year out of the string? I have tried a number of different RegExp but none seem to be working.
我如何才能从字符串中提取年份？我尝试了许多不同的 RegExp，但似乎都没有工作。
I would have expected re = new RegExp(/(\d+)\D*\z/);To have worked but sadly it did not.
我原以为re = new RegExp(/(\d+)\D*\z/);To 会起作用，但遗憾的是它没有。
Any suggestions would be very appreciated
任何建议将不胜感激
回答by Pierre
Since all of your str(s) use -as a separator, this will work for you:
由于您的所有str（s）都-用作分隔符，因此这对您有用：
var str = "7-Dec-1985",
arr = str.split('-'),
year = arr[2];
console.log(year);
回答by Gabriele Petrioli
this should do it
这应该这样做
var year = str.match(/\d+$/)[0];
回答by CodeSlinger
I'd try: /.*(\d{4})$/
我会尝试： /.*(\d{4})$/
Test your regex's here: http://www.regular-expressions.info/javascriptexample.html
在此处测试您的正则表达式：http: //www.regular-expressions.info/javascriptexample.html
