Insert Array into an Array of Arrays Javascript

Question

I've tried splice, concat, apply, call, etc.

All I am trying to do is take an array like this:

[["alksjdflskdj","2","1.33","1.30","", "5","1","1","1","1","1","0","","Other notes"],
 ["test","1","","","","1","0","1","0","0","0","",""],
 ["test3","","","","","","0","0","0","0","0","",""],
 ["","","","","","","0","0","0","0","0","",""],
 ["","","","","","","0","0","0","0","0","",""]]

And add something like this inside of the above array:

["2018-03-06 04:14:59", "T", "", "", "0"]

The end result would look like this:

[["alksjdflskdj","2","1.33","1.30","", "5","1","1","1","1","1","0","","Other notes"],
 ["test","1","","","","1","0","1","0","0","0","",""],
 ["test3","","","","","","0","0","0","0","0","",""],
 ["","","","","","","0","0","0","0","0","",""],
 ["","","","","","","0","0","0","0","0","",""],
 ["2018-03-06 04:14:59", "T", "", "", "0"]]

Thanks in advance. This has stumped me.

array_of_arrays.push(new_array)?

Amadan
– Amadan

2018-03-06 04:39:45 +00:00
Commented Mar 6, 2018 at 4:39 — Amadan
– Amadan, Commented Mar 6, 2018 at 4:39

guijob · Accepted Answer · 2018-03-06 04:47:44Z

2

You can use push() as already mentioned by others in order to add a element to an existing array:

arr1.push(ele); // arr1 now has ele at last index

Either you can make use of concat(), which doesn't mutates original array and return a brand new one:

var arr2 = arr1.concat(ele) // arr1 remains the same and arr2 has arr1 with ele at las index

It depends on your needs.

answered Mar 6, 2018 at 4:47

guijob

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1 Comment

user3259138 Over a year ago

Thank you! I really appreciate your additional information

brk · Accepted Answer · 2018-03-06 04:39:50Z

1

Use push method which adds elements to the end of an array.

var originalArray = [
  ["alksjdflskdj", "2", "1.33", "1.30", "", "5", "1", "1", "1", "1", "1", "0", "", "Other notes"],
  ["test", "1", "", "", "", "1", "0", "1", "0", "0", "0", "", ""],
  ["test3", "", "", "", "", "", "0", "0", "0", "0", "0", "", ""],
  ["", "", "", "", "", "", "0", "0", "0", "0", "0", "", ""],
  ["", "", "", "", "", "", "0", "0", "0", "0", "0", "", ""]
]

var ArrayToPush = ["2018-03-06 04:14:59", "T", "", "", "0"];

originalArray.push(ArrayToPush);
console.log(originalArray)

answered Mar 6, 2018 at 4:39

brk

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3 Comments

user3259138 Over a year ago

This is exactly what I tried and it gave me "thearray.push is not a function"

brk Over a year ago

@user3259138 i can help you if you can share the code which you have tried

user3259138 Over a year ago

So this code works, the issue was that I needed to use JSON.parse on the original array, because I was pulling it from local storage. I really appreciate your offer to help @brk

Sudheesh Singanamalla · Accepted Answer · 2018-03-06 04:40:29Z

You need to use the push() method to achieve your goal. Here's a snippet:

var initial = [
    ["alksjdflskdj","2","1.33","1.30","", "5","1","1","1","1","1","0","","Other notes"],
    ["test","1","","","","1","0","1","0","0","0","",""],
    ["test3","","","","","","0","0","0","0","0","",""],
    ["","","","","","","0","0","0","0","0","",""],
    ["","","","","","","0","0","0","0","0","",""]
];

var new_array = ["2018-03-06 04:14:59", "T", "", "", "0"];
initial.push(new_array);

initial now contains the new array of arrays you're looking for.

Hassan Imam · Accepted Answer · 2018-03-06 04:41:04Z

1

You can use array#push() to add a new element to an array.

var data = [["alksjdflskdj","2","1.33","1.30","", "5","1","1","1","1","1","0","","Other notes"],["test","1","","","","1","0","1","0","0","0","",""],["test3","","","","","","0","0","0","0","0","",""],["","","","","","","0","0","0","0","0","",""],["","","","","","","0","0","0","0","0","",""]],
    arr = ["2018-03-06 04:14:59", "T", "", "", "0"];
data.push(arr);
console.log(data);

answered Mar 6, 2018 at 4:41

Hassan Imam

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Sudheesh Singanamalla · Accepted Answer · 2018-03-06 06:08:20Z

1

You can try using Array.push() like this

var datas = [["alksjdflskdj","2","1.33","1.30","", "5","1","1","1","1","1","0","","Other notes"],["test","1","","","","1","0","1","0","0","0","",""],["test3","","","","","","0","0","0","0","0","",""],["","","","","","","0","0","0","0","0","",""],["","","","","","","0","0","0","0","0","",""]];

then

datas.push(["2018-03-06 04:14:59", "T", "", "", "0"])

edited Mar 6, 2018 at 6:08

Sudheesh Singanamalla

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answered Mar 6, 2018 at 4:46

Suhosauge

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Comments

Hassan Imam · Accepted Answer · 2018-03-07 14:11:03Z

0

Store the elements you want to push in a variable

the use push()

arr.push(ele);

this will automatically increase the index and inserts it in the last

edited Mar 7, 2018 at 14:11

Hassan Imam

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answered Mar 6, 2018 at 4:52

Sanjeev S

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1 Comment

user3259138 Over a year ago

Thank you. I appreciate your answer.

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