javascript combine variables into array

Question

Could someone help me with this javascript. I have two variables, with commaseparated words.

var names = "Verwerkende industrie, Retail, Primaire producent, Out of home, Groothandel, Grondstof, Consument, Bewerkende industrie";
var numbers = "9, 3, 4, 2, 7, 9, 3, 2";

I would like to combine them into an array that should end up looking like this

var combined = [
                ['Verwerkende industrie', 9], 
                ['Retail', 3], 
                ['Primaire producent', 4], 
                ['Out of home', 2], 
                ['Groothandel', 7], 
                ['Grondstof', 9], 
                ['Consument', 3], 
                ['Bewerkende industrie', 2]
            ];

The line for numbers is not valid Javascript syntax. Is it supposed to be an array? Or a string like names? Also, are you sure you wouldn't rather have an array of objects than an array of arrays? — Ingo Bürk
– Ingo Bürk, Commented Apr 12, 2014 at 21:08

Akinkunle Allen · Accepted Answer · 2014-04-12 21:17:36Z

1

var names = "Verwerkende industrie, Retail, Primaire producent, Out of home, Groothandel,      Grondstof, Consument, Bewerkende industrie";
var numbers = "9, 3, 4, 2, 7, 9, 3, 2";

var namesArray = names.split(","); //split the string at ','. split() returns an array of result
var numbersArray = numbers.split(",");

var resultArray = []; //array to hold result

//since the namesArray and numbersArray are the same length, you can use one for-loop
for (var i=0, len=namesArray.length; i < len; i++) {
  resultArray[i] = [namesArray[i], parseInt(numbersArray[i])];
}

answered Apr 12, 2014 at 21:17

Akinkunle Allen

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1 Comment

Johansrk Over a year ago

Works perfectly. Thanks.. And even with line comments

Tyler McGinnis · Accepted Answer · 2014-04-12 21:17:27Z

1

This should work.

var names = "Verwerkende industrie, Retail, Primaire producent, Out of home, Groothandel, Grondstof, Consument, Bewerkende industrie";
var numbers = "9, 3, 4, 2, 7, 9, 3, 2";

names = names.split(',');
numbers = numbers.split(',');
var combined = [];
for(var i = 0; i < names.length; i++){
  combined.push([names[i], parseInt(numbers[i])]);
}

answered Apr 12, 2014 at 21:17

Tyler McGinnis

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Comments

Kendall Frey · Accepted Answer · 2014-04-12 21:27:58Z

0

Unfortunately JavaScript doesn't have a 'zip' function, but you can do the same thing like this:

var namesArr = names.split(", ");
var numbersArr = numbers.split(", ").map(function (s) { return parseInt(s); });
var combined = [];
for (var i = 0; i < namesArr.length; i++)
{
    combined[i] = [namesArr[i], numbersArr[i]];
}

edited Apr 12, 2014 at 21:27

answered Apr 12, 2014 at 21:17

Kendall Frey

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1 Comment

Johansrk Over a year ago

close but some of them result in a NaN

phylax · Accepted Answer · 2014-04-12 21:32:24Z

0

var names = "Verwerkende industrie, Retail, Primaire producent, Out of home, Groothandel, Grondstof, Consument, Bewerkende industrie";
var numbers = "9, 3, 4, 2, 7, 9, 3, 2";

function zip(arrays) {
    return arrays[0].map(function(_,i){
        return arrays.map(function(array){return array[i]})
    });
}

// paramert = array
zip([
 names.split(/,\s+/),
 numbers.split(/,\s+/).map(function (i) { return parseInt(i); })
]);

edited Apr 12, 2014 at 21:32

phylax

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answered Apr 12, 2014 at 21:10

niklasfi

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3 Comments

Ingo Bürk Over a year ago

This does not give the desired array. For one the whitespace is not stripped, secondly the numbers will be strings (the example output states they are number types).

niklasfi Over a year ago

@IngoBürk sorry for the mix up. I was in a hurry

Johansrk Over a year ago

quite close. When I console.log it it gives me the structure, but all numbers are undefined in the array

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