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
– enhzflep, Commented Jun 20, 2017 at 9:47
Possible duplicate of How to replace all occurrences of a string in JavaScript? — Jaydeep Mor
– Jaydeep Mor, Commented Jun 20, 2017 at 9:49
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
– Richard, Commented Jun 20, 2017 at 9:51

enhzflep · Accepted Answer · 2017-06-20 09:59:52Z

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, 2017 at 9:59

enhzflep

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answered Jun 20, 2017 at 9:54

Farhad Azarbarzinniaz

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2 Comments

Farhad Azarbarzinniaz Over a year ago

@enhzflep Thanks.

HamidReza Heydari Over a year ago

Thank for your answer But the best Pattern for this goal is : replace(/,*,/g,','); ===> replace(/,+/g,',');

Man Programmer · Accepted Answer · 2017-06-20 10:08:00Z

1

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

edited Jun 20, 2017 at 10:08

answered Jun 20, 2017 at 9:47

Man Programmer

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3 Comments

Richard Over a year ago

That will reduce any sequence of two or more commas to one. Which isn't quite the requirement...

Hassan Imam Over a year ago

Isn't it incorrect? It will replace the first occurrence of ,, in str

Hassan Imam Over a year ago

The code is updated the above comment is no longer valid.

Lennholm · Accepted Answer · 2017-06-20 09:52:51Z

0

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

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

answered Jun 20, 2017 at 9:52

Lennholm

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Comments

Raj · Accepted Answer · 2017-06-20 09:53:28Z

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, 2017 at 9:53

answered Jun 20, 2017 at 9:47

Raj

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Comments

Hassan Imam · Accepted Answer · 2017-06-20 09:55:28Z

0

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

answered Jun 20, 2017 at 9:55

Hassan Imam

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Comments

Simone Boccato · Accepted Answer · 2017-06-20 10:02:02Z

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, 2017 at 10:02

Simone Boccato

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