如何使用正则表达式和Javascript获取字符串的第一个和最后一个字符

Question

I need to get the first and the last letter of a string, using a regex in Javascript and I have no Idea how to achieve this. Anyone has an Idea?

Answer 1

As the comments indicate, it would be very simple to do it without regexp:

var str = "This is my string";

var first = str[0];
var last = str[str.length-1];

If you really need to use a regexp, you could do it like this:

var matches = str.match(/^.|.$/g); // ["T", "g"]

Answer 2

Just treat the string as an array:

text = 'this is a string, hi!';
firstChar = text[0];
lastChar = text[text.length-1];

Answer 3

if you need regex only :

var matches = 'abcde'.match(/^(.).*(.)$/)
console.log(matches)
["abcde", "a", "e"]