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]
 ];

• Ingo Bürk: 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?
• Johansrk: ahh, sorry. It is also a string like names

Answer 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])];
}

• Johansrk: Works perfectly. Thanks.. And even with line comments

Answer 2

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])]);
}

Answer 3

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]];
}

• Johansrk: close but some of them result in a NaN

Answer 4

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); })
]);

• Ingo Bürk: 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: @IngoBürk sorry for the mix up. I was in a hurry
• Johansrk: quite close. When I console.log it it gives me the structure, but all numbers are undefined in the array