JavaScript: Push Array with multiple values on same index

Question

I have an array that stores me some values like this:

array[0] = "string", "string"
array[1] = "string", "string"
array[2] = "string", "string"
array[3] = "string"

As you see sometimes i have 2 values on same index, but sometimes i don't. Then i need to push those values to another array, one value by one.

I can't use this:

for(var i= 0; i< 4 ; i++){
    newarray.push(array[i][0]);
    newarray.push(array[i][1]);
}

Otherwise i would push blank values (i guess).

How can i check if i have 2 values on that index or one value, so i can use a different circle?

Thank you!

Guilherme Sehn · Accepted Answer · 2013-11-23 03:44:25Z

1

Your code is probably not working as expected, when you do this:

array[0] = "a", "b", "c"

It will assign only "a" to array[0] and return "c". To assign another array with these values, you should use something like this:

array[0] = ["a", "b", "c"]

To maintain the structure consistence, if I had only one element in the array I would use an array structure too.

array[1] = ["a"]

Using this, you could iterate over your array and then over your nested arrays to get their values.

for (var i = 0; i < array.length; i++) {
    for (var j = 0; j < array[i].length; j++) {
        newarray.push(array[i][j]);
    }
}

Fiddle: http://jsfiddle.net/nDhP5/

answered Nov 23, 2013 at 3:44

Guilherme Sehn

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4 Comments

M. Coutinho Over a year ago

Yes i had array[0] = ["a", "b", "c"] forgot to type "[..]". But that way i wont get blank values when i display them on some label?

Guilherme Sehn Over a year ago

Didn't understand your question about the label. Can you provide some more context?

M. Coutinho Over a year ago

My project is about creating 2 teams :) I have another 2 arrays so i push those values from the other array. Then I want to display the values between those 2 teams.

M. Coutinho Over a year ago

I forgot to say, i want to mantain the double values together on the same team.

Alex K · Accepted Answer · 2013-11-23 04:02:57Z

0

How can i check if i have 2 values on that index or one value, so i can use a different cicle?

Assuming you mean you are storing multiple values in an array at one key, you can check the length of the array containing those values. This way you can see if you have 1 or 2 or more values.

if (array[i].length == 1) { // you have 1 value }

if (array[i].length == 2) { // you have 2 values }

answered Nov 23, 2013 at 4:02

Alex K

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Comments

user889030 · Accepted Answer · 2017-01-26 06:51:02Z

0

you can do like this

var Rdata = []; 
var temp_ray = ["v1","v2","v3"];
Rdata.push(temp_ray);
var Rlen = Rdata.length;
console.log('Rdata length '+Rlen);     // 1

JsFiddle :: Jsbin demo

answered Jan 26, 2017 at 6:51

user889030

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