A regular expression to capture characters between the last space character and the end of a line

Question

I am trying to identify the characters between the last space character and the end of a line.

Example

Input: "this and that" Output: "that" 

I tried the regex below, but it doesn't work!

 var regex = /[\s]$/ 

Answer 1

You can do without regex

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

Using regex

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

Answer 2

I suggest you use a simple regex pattern

 \S+$ 

Javascript validation code:

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

Output:

 that 

Check here .

Answer 3

You can simply delete everything to the last place.

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

Or, to match any space ...

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

Answer 4

In your example, there is only one space at the end of the line. Use

 /\s\S+$/ 

to match any number.