正则表达式捕获最后一个空格字符和字符串结尾之间的字符

Question

I'm trying to determine the characters between the last white space characer and the end of the string.

Example

Input:   "this and that"

Output: "that"

I have tried the regex below but it doesnt work!

var regex = /[\s]$/

Answer 1

Can do without regex

var result = string.substring(string.lastIndexOf(" ")+1);

Using regex

result = string.match(/\s[a-z]+$/i)[0].trim();

Answer 2

I suggest you to use simple regex pattern

\S+$

Javascript test code:

document.writeln("this and that".match(/\S+$/));

Output:

that 

Test it here .

Answer 3

You could just remove everything up to the last space.

s.replace(/.* /, '')

Or, to match any white space...

s.replace(/.*\s/, '')

Answer 4

Your example matches just one space character at the end of the string. Use

/\s\S+$/

to match any number.