[Regular Expressions] Match the Start and End of a Line

时间：2016-02-17 20:57:42 阅读：120 评论：0 收藏：0 [点我收藏+]

We can use:

^: match the beginning
$: match the end

Let‘s say we have the string like the following:

var str = `12/1/16
12-16-13
11/12/16
12-12-2016`;

What we want to do is get all the ‘12‘ which at the begining of each line:

If we do like that:

var regex = /^12/g;

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To solve this problem, we can use ‘m‘ flag:

var regex = /^12/gm;

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And also we want to get the line which end by ‘16‘:

var regex = /^12.+16$/gm;

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原文：http://www.cnblogs.com/Answer1215/p/5196455.html

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