Javascript comma seperated values not working

Question

I have a variable A as follows:

A = [[a],[b],[c],[d],.....]

I need to make this array to comma separated values as:

A = a,b,c,d,....

What I did is as follows:

A = A.replace("[", "");
A = A.replace("]", "");

But not working!!

Getting error as A.replace is not a function

possible duplicate of [Easy way to turn Javascript array into comma-separated list?](http://stackoverflow.com/questions/201724/easy-way-to-turn-javascript-array-into-comma-separated-list) — Grundy, Sep 03 '15 at 09:27
can you provide [jsfiddle](http://jsfiddle.net/), that can reproduce your problem? — Grundy, Sep 03 '15 at 09:33

score 1 · Answer 1 · edited May 23 '17 at 12:06

1

I would suggest using underscore.js:

_.flatten(A).join(',')

EDIT: underscore in not actually needed (kudos @Grundy):

A.join(',')

edited May 23 '17 at 12:06

Community

1
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answered Sep 03 '15 at 09:16

slomek

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any lib not needed - `join` is enough – Grundy Sep 03 '15 at 09:17
It is coming from ajax so it is a variable. sorry I mistakenly put it as array!! – user1989 Sep 03 '15 at 09:26

score 1 · Answer 2 · answered Sep 03 '15 at 09:23

1

var A = [["a"],["b"],["c"],["d"]];
alert(A.toString()); // .join not even needed

answered Sep 03 '15 at 09:23

mplungjan

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`join` return same result as `toString` but you can concatenate not only by comma :-) – Grundy Sep 03 '15 at 09:25
I know: _I need to make this array to comma separated values_ – mplungjan Sep 03 '15 at 09:25
@mplungjan updated my question. please check buddy!! – user1989 Sep 03 '15 at 09:27
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Updated in what way? Does my answer answer your question or is the situation different than you described? – mplungjan Sep 03 '15 at 09:28
@Grundy it is String!! Getting error as replace is not a function – user1989 Sep 03 '15 at 09:31
@NeethuRaj, if this `string` so check that correct write `replace` otherwise check type variable, possibly it not a string :-) – Grundy Sep 03 '15 at 09:32
Sorry buddy I tried alert( typeof A); It is getting Object. It is returning from ajax!!] – user1989 Sep 03 '15 at 09:34
@NeethuRaj, can you provide [jsfiddle](https://jsfiddle.net) that can reproduce your error? – Grundy Sep 03 '15 at 09:36
Can you post an actual example of the JSON and an actual example of what you want it to look like? And again, does my answer address your issue? - lastly, My name is Michel, not Buddy... – mplungjan Sep 03 '15 at 09:36
@mplungjan it is interesting, but is some browser `join` can be faster :-) https://jsperf.com/tostring-join – Grundy Sep 03 '15 at 09:38
Interesting. On my browser/platform, toString is faster – mplungjan Sep 03 '15 at 09:41
Rarely use ie. Chrome is my current favourite – mplungjan Sep 03 '15 at 10:02
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/88681/discussion-between-grundy-and-mplungjan). – Grundy Sep 03 '15 at 10:12

Javascript comma seperated values not working

2 Answers2