如何匹配特定的正则表达式？

I am having a hard time understanding how to match a certain regular expression using javascripts match() function. I have a field in a table stored in the following format: CH-01-Feb-13-1. I want to be able to grab the date without the dashes, i.e. 01-Feb-13. I was trying to figure out how to combine with ^- or . but not sure how to do it.

我很难理解如何使用javascripts match（）函数匹配某个正则表达式。我在表格中有一个字段，格式如下：CH-01-Feb-13-1。我希望能够在没有破折号的情况下获取日期，即01年2月1日。我试图找出如何与^ - 或。但不知道该怎么做。

2 个解决方案

#1

So you want the regular expression? Something like

所以你想要正则表达式？就像是

^\w{2}-(\d{2}-\w{3}-\d{2}).*?$

You can see the explanation here: http://www.regexper.com/ Just copy and paste the expression.

您可以在此处查看说明：http：//www.regexper.com/只需复制并粘贴表达式即可。

Example with Javascript

使用Javascript的示例

var r = /^\w{2}-(\d{2}-\w{3}-\d{2}).*?$/i
var groups = "CH-01-Feb-13-1".match(r);
console.log(groups);

#2

If you are not comfortable with Regex then you can use something like this.

如果你对Regex不熟悉，那么你可以使用这样的东西。

var str = 'CH-01-Feb-13-1';
str = str.replace('CH-','');
str = str.split('-');
str.pop();
console.log(str.join('-'));