I'm having a problem finding out how to replace the last ', ' in a string with ' and ':
Having this string: test1, test2, test3
and I want to end out with: test1, test2 and test3
I'm trying something like this:
var dialog = 'test1, test2, test3';
dialog = dialog.replace(new RegExp(', /g').lastIndex, ' and ');
but it's not working
foo.replace(/,([^,]*)$/, ' and $1')
use the $ (end of line) anchor to give you your position, and look for a pattern to the right of the comma index which does not include any further commas.
Edit:
The above works exactly for the requirements defined (though the replacement string is arbitrarily loose) but based on criticism from comments the below better reflects the spirit of the original requirement.
console.log(
'test1, test2, test3'.replace(/,\s([^,]+)$/, ' and $1')
)
result = dialog.replace(/,\s(\w+)$/, " and $1");
$1 is referring to the first capturing group (\w+) of the match.
regex search pattern \s([^,]+)$
Line1: If not, sdsdsdsdsa sas ., sad, whaterver4
Line2: If not, fs sadXD sad , ,sadXYZ!X
Line3: If not d,,sds,, sasa sd a, sds, 23233
Search with patterns finds Line1: whaterver4 Line3: 23233
Yet doesnt find Line2: sadXYZ!X
Which is only missing a whitespace
