How do I make each each element in array another array?

Question

I have some text that I receive from the user:

var text = ['Hello', 'World']; // this is the product of string.split(',')

I need to convert it into an array like this one:

var argument = [['Hello'], ['World']];

I need the input in this format so I can send multiple values to the db.

How can I do this elegantly?

Please see #ninjagecko Array.prototype.chunk answer here. To use on your text array, do it like var argument = text.chunk(text.length); — Tim Rijavec
– Tim Rijavec, Commented May 5, 2015 at 15:02

T.J. Crowder · Accepted Answer · 2015-05-05 15:00:00Z

3

I can't think of anything more elegant for this than map:

E.g.:

var argument = originalString.split(",").map(function(entry) {
    return [entry];
});

Or if you've enabled ES6 on your NodeJS installation:

var argument = originalString.split(",").map((entry) => [entry]);

answered May 5, 2015 at 15:00

T.J. Crowder

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4 Comments

Angular noob Over a year ago

Perfect. How do I enable ES6 in Node? Are arrow functions supported yet?

T.J. Crowder Over a year ago

@Angularnoob: Ah, looks like they aren't quite yet: github.com/joyent/node/wiki/… (right at the bottom, but I figured the page as a whole was useful to you).

Angular noob Over a year ago

@That is too bad, man. I am not much of a JS coder (evidently,) but it seems like ES 6 has been imminent for ages!

T.J. Crowder Over a year ago

@Angularnoob: It's getting here. :-) About two years behind schedule, which isn't as bad as it could be as these things go...

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