Using JavaScript, incorporate an array into a multidimensional array

I need help in appending to an existing array

var value_list = [
    ["asdf：4sdf", "", "", "", "asf：sadf", "", "", "", "sadf：2000/01/3", "", "", "", ""],
    ["safd", "asfd", "sdaf", "sadf", "asdf", "asdf", "sdf", "asfd", "sadf", "dsf", "sdf", "adf", "sadf"],
    ["1", "asdf", "asdf", "22", "22", "3000", "500", "0", "0", "3500", "0", "3500", ""],
    ["2", "asdf", "asdf", "22", "22", "3000", "500", "0", "0", "3500", "0", "3500", ""],
];

Here is the new array:

["SELECTIONS: ", "", str, "", "", "", "", "", "", "", "", "", ""]

The final result should look like this:

var value_list = [
    ["SELECTIONS: ", "", str, "", "", "", "", "", "", "", "", "", ""],
    ["asdf：4sdf", "", "", "", "asf：sadf", "", "", "", "sadf：2000/01/3", "", "", "", ""],
    ["safd", "asfd", "sdaf", "sadf", "asdf", "asdf", "sdf", "asfd", "sadf", "dsf", "sdf", "adf", "sadf"],
    ["1", "asdf", "asdf", "22", "22", "3000", "500", "0", "0", "3500", "0", "3500", ""],
    ["2", "asdf", "asdf", "22", "22", "3000", "500", "0", "0", "3500", "0", "3500", ""],
];

I attempted 

var value_list = [new_array,value_list]
but it didn't work as expected

javascriptarrays

Answer №1

this is likely the solution you're looking for:

CHOICE 1 – The option I prefer

let result = [new_array, ...value_list]

CHOICE 2

value_list.unshift(new_array)

Answer №3

In my opinion, the code block 

value_list.push(["SELECTIONS: ", "", str, "", "", "", "", "", "", "", "", "", ""])
should function properly.

Answer №4

Here is a fast and contemporary method:

const x = [10, 20, 30];
const y = [40, 50, 60];
const z = [...x, ...y];
console.log(z);

Answer №5

To achieve this, you simply have to

[new_array, ...value_list]

rather than

[new_array,value_list]


var value_list = [
  [
    "asdf：4sdf",
    "",
    "",
    "",
    "asf：sadf",
    "",
    "",
    "",
    "sadf：2000/01/3",
    "",
    "",
    "",
    "",
  ],
  [
    "safd",
    "asfd",
    "sdaf",
    "sadf",
    "asdf",
    "asdf",
    "sdf",
    "asfd",
    "sadf",
    "dsf",
    "sdf",
    "adf",
    "sadf",
  ],
  [
    "1",
    "asdf",
    "asdf",
    "22",
    "22",
    "3000",
    "500",
    "0",
    "0",
    "3500",
    "0",
    "3500",
    "",
  ],
  [
    "2",
    "asdf",
    "asdf",
    "22",
    "22",
    "3000",
    "500",
    "0",
    "0",
    "3500",
    "0",
    "3500",
    "",
  ],
];

const new_array = [
  "SELECTIONS: ",
  "",
  "str",
  "",
  "",
  "",
  "",
  "",
  "",
  "",
  "",
  "",
  "",
];

value_list = [new_array, ...value_list];
console.log(value_list);

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Updating state within an eventListener in useEffect with an empty array does not trigger a re-render

This text is unique because I tried to enhance it with an updater function that did not yield the desired result. Here is the code snippet: const [counter, setCounter] = useState(0); useEffect(()=> { const fetchSessions =async ()=> ...

javascriptreactjsweb3js

What is the best way to include a component in the global React variable without using import/export in the HTML?

Is it possible to include a component in React's global variable without importing/exporting to HTML? Example //HTML <body> <div id="App"></div> <script src="https://unpkg.com/<a href="/cdn-cgi/l/email-protection" ...

javascriptreactjs

Issue with fading out in Ajax.BeginForm not resolving

I currently have: @using (Ajax.BeginForm("actionToDo", new AjaxOptions { HttpMethod = "post", InsertionMode = InsertionMode.Replace, UpdateTargetId = "updatediv", OnBegin = "$('#updatediv').fadeOut()", OnComplete = "$(&apo ...

javascriptjqueryajaxasp.net-mvc-4

Having difficulty uploading files using FormData in JavaScript, as $_FILES is returning empty

I have implemented a file upload feature to my server using JavaScript, but I am facing an issue with certain jpeg/png files where the $_FILES and $_POST variables are empty. Despite trying various solutions, I haven't been able to resolve this issue. ...

javascriptphpjqueryhtmlajax

What are the possibilities of utilizing a variable that is stated within composition to enable dynamic rendering?

I'm working on a Vue.js v3 project using the composition API. I have defined a variable in my setup like this: setup() { const showInvoiceItemForm = true; return { showInvoiceItemForm }; }, Now, I want to show a form when a button is click ...

javascriptvue.jsvuejs3

What is the relationship between JavaScript and the height of a window?

Consider the code snippet below: 24 <script type="text/javascript"> 25 26 function UpdateDisplay($isVisible){ 27 if($isVisible) 28 $('.relatedContent').stop().css({ 29 "transform": "tr ...

javascript

What is the best way to insert a "03" at the beginning of a hexadecimal string for a byte array in Java?

Imagine you have an array of bytes byte [] initial = ......; The corresponding hex string is 0x6b6164756d ,i.e; System.out.println(Numeric.toHexString(initial)); //--> 0x6b6164756d Is it possible to prepend "03" in front of "initial" so that when I Sy ...

javaarrayshex

Manipulate the value of the <input> element when focused through JavaScript

After I focus on the input field, I was expecting to see Bond-Patterson, but instead, I am only getting Bond. What could be causing this discrepancy and how can it be fixed? $('input[name="surname"]').attr("onfocus", "this.placeholder='Bo ...

javascriptjqueryhtml

Interactive image grid with adjustable description field per image upon selection

My goal is to create a grid of images with a single text field below the grid. This text field should display the description of the image that was last clicked. The grid is implemented using floating divs within a main div, as shown in the code snippet be ...

javascriptjqueryhtmlcss

Uncover concealed words within PDF documents

While incorporating PDF.js to display LaTeX typeset PDF files on my website, I encountered an issue. I have concealed specific text in the PDF, but it remains searchable when viewed in Acrobat Reader. Is there a method to search for hidden text using PDF ...

javascriptpdf.js

After the use of app.use sendFile, it is crucial to ensure the jquery

I'm experiencing difficulty loading my jQuery library in my 'server.js' file. Currently, I have a file named 'route.js' which sends a file called 'home.html' on 'localhost:port/'. The home.html page displays fin ...

javascriptexpress

The background failed to display (potentially due to a hovering function)

I encountered an issue with a div that has a background image. Upon loading the page, the background image fails to display initially. However, when I hover over the div and then move my mouse elsewhere (due to a specific function described below), the bac ...

javascriptjqueryhtmlcssfrontend

In a Vue serverless web application, OpenLayers Map object fails to trigger events

In my Vue serverless web application, I have implemented an OpenLayers map initialized in the mounted lifecycle method. The map is populated with ImageWMS layers that are updated by various functions. After updating the parameters of these layers, I call ...

javascriptvue.jsopenlayers

The Jquery ajax page is redirecting automatically when a post request is made

Encountering an issue while attempting to upload multiple files through AJAX, as the process redirects to a blank page displaying only the names of the uploaded files. Here is the HTML tag: Below is the JavaScript function: function upload(){ var proje ...

javascriptjqueryajaxbonita

Ways to resolve the issue of missing data display in Angular when working with the nz-table

Below is the code snippet: <nz-table #listTable nzSize="middle" [nzData]="data"> <thead> <tr> <th nzShowExpand></th> <th>Location</th> <th>Device</th> ...

javascriptangulartypescript

Encountering ECONNREFUSED error when making requests to an external API in a NextJS application integrated with Auth

Currently, I have integrated Auth0 authentication into my NextJS application by following their documentation. Now, I am in the process of calling an external ExpressJS application using the guidelines provided here: https://github.com/auth0/nextjs-auth0/b ...

javascripttypescriptnext.jsauth0

Two distinct actions achieved through a single form using JavaScript

Looking to populate fields using one JavaScript button and then submit the collected data with a second JavaScript button. I am able to get the fields to populate when clicking the "Populate" button, but none of the values show up on the ordertest.php page ...

javascriptphpformsaction

Introducing a fresh addition to the array

I am looking for a way to create a new array without modifying the original one. Currently, there is a function that adds a new object to an existing array, but I need a different method to achieve this. Can someone suggest a solution? const arr = [ ...

javascriptarraysmethods

Determine the presence of a number within a JSON string array that has been decoded in PHP

After successfully decoding my JSON string, I am now attempting to utilize the in_array() function in PHP to verify if ID number 5 exists within the array. Here is the Array: Array ( [0] => Array ( [id] => 5 ) [1] => Array ( [id] => 4 [childr ...

phparraysjson

Retrieve an array of nested mongodb documents by making a query

I've been attempting to execute a mongodb document query without success. The current query successfully retrieves a user with an id of domainOwner and scope of clearcrimson. db.getCollection("users").findOne( { "roles": { $elemMatch: {_id: "domainOw ...

arraysmongodbmongodb-query