Array[String] OR String to String

Question

I've got an API that can return either a short Array[String] or a String itself. This is being returned by Angular's $http.get. I would like to return this as a String.

Is it safe to assume that calling the .toString() method on either an Array or String will not give me grief?

Example via browser console:

"something".toString();
"something"
["something"].toString();
"something"

Thanks!

I think its not a problem. If the array has more strings then you will get a single string comma separated. Make sure the array size is always 1. If not, check for type, then if it is an array, pick the first element. — rajuGT
– rajuGT, Commented Nov 3, 2015 at 19:42
@BillF. A single string containing all the array values comma separated will be returned. Reference: Array.prototype.toString()... — War10ck
– War10ck, Commented Nov 3, 2015 at 19:44

Pavel Golovan · Accepted Answer · 2015-11-03 19:50:22Z

3

Is it possible API would return Array[String1, String2] or Array[] (empty array)? I'd better write more explicit code:

var apiMessage = Array.isArray(message) ? message[0] : message;

answered Nov 3, 2015 at 19:50

Pavel Golovan

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1 Comment

Tony Laidig Over a year ago

This is pretty much what I was looking for!

Appeiron · Accepted Answer · 2015-11-03 19:51:26Z

1

Safe depends on your trust to your back-end. And that's why:

["something", null, undefined, {}].toString() => "something,,[object Object]"

edited Nov 3, 2015 at 19:51

answered Nov 3, 2015 at 19:45

Appeiron

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2 Comments

Tony Laidig Over a year ago

The devil is always in the details.

Appeiron Over a year ago

If only you develop back by your self, so you can not fool yourself :D

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