remove second comma from a string in javascript

Question

I have an string as:

0123456789,, 0987654213 ,, 0987334213,, ......

How can I convert this into

0123456789, 0987654213, 0987334213, ......

i.e I want to remove the second comma

What happened when you tried to replace all ",," instances with ","? Surely you looked into string.replace methods? — enhzflep, Jun 20 '17 at 09:47
Possible duplicate of [How to replace all occurrences of a string in JavaScript?](https://stackoverflow.com/questions/1144783/how-to-replace-all-occurrences-of-a-string-in-javascript) — Jaydeep Mor, Jun 20 '17 at 09:49
The second pair of commas is proceeded by a space in the input; that space is not in the output: typo or part of the problem? — Richard, Jun 20 '17 at 09:51

score 3 · Accepted Answer · edited Jun 20 '17 at 09:59

3

You can do it very simply, like this using regex.

var str = "0123456789,,0987654213,,0987334213,,,,,9874578";
str=str.replace(/,*,/g,',');
console.log(str)

edited Jun 20 '17 at 09:59

enhzflep

answered Jun 20 '17 at 09:54

@enhzflep Thanks. – Farhad Azarbarzinniaz Jun 20 '17 at 10:01
Thank for your answer But the best Pattern for this goal is : `replace(/,*,/g,',');` ===> `replace(/,+/g,',');` – HamidReza Heydari Dec 12 '17 at 05:04

Man Programmer · Answer 2 · 2017-06-20T10:08:00.587

1

var str = "0123456789,, 0987654213 ,, 0987334213,, ......"
console.log(str.replace(/\,+/g,","));

edited Jun 20 '17 at 10:08

answered Jun 20 '17 at 09:47

Man Programmer

That will reduce any sequence of two *or more* commas to one. Which isn't quite the requirement... – Richard Jun 20 '17 at 09:50
Isn't it incorrect? It will replace the first occurrence of `,,` in `str` – Hassan Imam Jun 20 '17 at 09:57
The code is updated the above comment is no longer valid. – Hassan Imam Jun 20 '17 at 10:10

Raj · Answer 3 · 2017-06-20T09:53:28.113

0

You can use replace() method with regular expression with g flag to replace all instances ',,' with ',':

str.replace(/,,/g, ",");

Here's a simple example

var str = '0123456789,, 0987654213 ,, 0987334213';
str = str.replace(/,,/g, ",");
console.log(str);

edited Jun 20 '17 at 09:53

answered Jun 20 '17 at 09:47

Raj

score 0 · Answer 4 · answered Jun 20 '17 at 09:52

0

This will replace all occurrences of consecutive commas with a single comma:

str.replace(/,+/g, ',');

answered Jun 20 '17 at 09:52

Lennholm

score 0 · Answer 5 · answered Jun 20 '17 at 09:55

0

var str = "0123456789,, 0987654213 ,, 0987334213,,"
str = str.split(",,").join(",")
console.log(str);

answered Jun 20 '17 at 09:55

Hassan Imam

score 0 · Answer 6 · answered Jun 20 '17 at 10:02

0

There is a replace method for String. You can replace ',,' with a ','.

An example:

var str = "0123456789,, 0987654213,, 0987334213,"; 
var newStr = str.replace(/,,/g,','));

The output:

0123456789, 0987654213, 0987334213,

answered Jun 20 '17 at 10:02

Simone Boccato

6 Answers6