Converting string array into integer array not working

Question

I have the following array:

s = "215, 216, 217"

When I do

s.split(",").map(Number)

I am getting this back:

[NaN, 216, NaN]

If s has only two numbers, both return as NaN. Help!

Update:

Got it fixed! I had to get rid of quotes that surrounded the string because I was getting it from a cookie.

s.replace(/\"/g, "").split(",").map(Number)

did the trick!

Thanks!

Actually, I am doing it through cookies and realized my array when I do split(",") on the string I get this: [""215", " 216", " 217""] — Mohamed El Mahallawy
– Mohamed El Mahallawy, Commented May 4, 2014 at 15:25

Dalorzo · Accepted Answer · 2014-05-17 21:55:53Z

1

This will explains it:

s.split(",").map(function(item){ return item.trim() }).map(Number)

There are space between the numbers:

s = "215,/* here */ 216,/* here */ 217"

Other possible solutions

s.replace(/\s/g,'').split(',').map(Number)

or what it seems was the initial approach but using Regular Expression to get rid of the extra space:

s.split(/\s*,\s*/).map(Number)

answered May 4, 2014 at 15:25

Dalorzo

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5 Comments

I just realized because it's going through cookies, when I just do .split(",") I get this: [""215", " 216", " 217""]

Need to get rid of that surrounding quotes within the array

s.split(",").map(function(item){ return item.match(/\d+/)})

thanks @Ejay I was trying to make a point although your option is very valid. I was also thinking about s.replace(/\s/g,'').split(',').map(Number)

it seems @MohamedElMahallawy just did it in that way :)