javascript - Regular Expression for last value in comma separated list - Stack Overflow

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I am trying to build a regular expression that returns everything after the last ma in a ma separated list.

// So if my list is as followed
var tag_string = "red, green, blue";

// Then my match function would return
var last_tag = tag_string.match(A_REGEX_I_CANNOT_FIGURE_OUT_YET);

// Then in last tag I should have access to blue

// I have tried the following things: 
var last_tag = tag_string.match(",\*");

// I have seen similar solutions, but I cannot figure out how to get the only the last string after the last ma.

I am trying to build a regular expression that returns everything after the last ma in a ma separated list.

// So if my list is as followed
var tag_string = "red, green, blue";

// Then my match function would return
var last_tag = tag_string.match(A_REGEX_I_CANNOT_FIGURE_OUT_YET);

// Then in last tag I should have access to blue

// I have tried the following things: 
var last_tag = tag_string.match(",\*");

// I have seen similar solutions, but I cannot figure out how to get the only the last string after the last ma.

• javascript
• regex

Share Improve this question Follow edited Nov 20, 2014 at 5:27 Mehrad 4,20355 gold badges4545 silver badges6363 bronze badges asked Sep 11, 2013 at 18:10 usumoiousumoio 3,56866 gold badges3535 silver badges5858 bronze badges 1

• Could also use split(): jsfiddle/VCNpQ – powerbuoy Commented Sep 11, 2013 at 18:23

Add a ment  | 

4 Answers 4

Sorted by: Reset to default 7

You can try something like:

var last_tag = tag_string.match("[^,]+$").trim();

This will first get " blue" then remove the trailing spaces.

([^,]+)$

Edit live on Debuggex

[^,]+$

seems to do the trick. It matches blue.

tag_string.match(/[^,\s]+$/)

=> [ 'blue', index: 12, input: 'red, green, blue' ]

Thats it :)

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