I need to replace the last instance of a comma with and. I have tried this:
myString = myString.replace('/_([^,]*)$/','and$1');
But the string is not affected.
Any ideas?
5 Answers
You have a _ instead of a , and you've wrapped your regex in quotes. I think you'll also need to add a space before the and:
myString = myString.replace(/,([^,]*)$/,'\ and$1');
Edit:
You could also do this without regex, if you're so inclined:
str = "Maria, David, Charles, Natalie";
lastComma = str.lastIndexOf(',');
newStr = str.substring(0, lastComma) + ' and' + str.substring(lastComma + 1);
//=> "Maria, David, Charles and Natalie"
Comments
You need to remove ' from regex or you need to use RegExp(). Also you can reduce regex with positive lookahead.
var myString = 'abc,df,ef,shsg,dh';
myString = myString.replace(/,(?=[^,]*$)/, ' and ');
// use `,` instead of `_` --^-- here
document.write(myString);
Comments
You're using _ instead of a ,
myString = myString.replace('/,([^,]*)$/','and$1');
DEMO: https://regex101.com/r/dK9sM0/1
Comments
You replace should like this one:
.replace(/,(?=[^,]*$)/,' and')
Comments
You put a _ instead of a , in your regex. Use this one :
myString = myString.replace(/^(.*)(,)([^,]+)$/,'$1and$3');
replace(/_([^,]*)$/,'and$1'). The/ ... /marks the start and end of the regex.