I have a text
test, text, 123, without last comma
I need it to be
test, text, 123 without last comma
(no comma after 123). How to achieve this using JavaScript?
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3 Answers
str.replace(/,(?=[^,]*$)/, '')
This uses a positive lookahead assertion to replace a comma followed only by non-commata.
A non-regex option:
var str = "test, text, 123, without last comma";
var index = str.lastIndexOf(",");
str = str.substring(0, index) + str.substring(index + 1);
But I like the regex one. :-)
1 Comment
0x49D1
:( didn't know that javasctipt has lastIndexOf.. Thanks!
Another way to replace with regex:
str.replace(/([/s/S]*),/, '$1')
This relies on the fact that * is greedy, and the regex will end up matching the last , in the string. [/s/S] matches any character, in contrast to . that matches any character but new line.
