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1. Top results related to javascript multidimensional array

   • Javascript Multidimensional Array: Add Values

     Top Answer

     Answered May 07, 2012 · 3 votes

     I am not sure if you want an array or object. If object, stop it is 1st pass and tmp in below code should return you the object as Object { venue=18, inning=38, hithard=4}.

     DEMO

     var tmp = {}, keys;for (var i = 0; i < myArr.length; i++) { keys = myArr[i][0]; tmp[keys] = (tmp.hasOwnProperty(keys))? (tmp[keys] + myArr[i][1]):myArr[i][1];} //tmp - will return you a Object { venue=18, inning=38, hithard=4}var output = [];for (keys in tmp) { output.push([keys, tmp[keys]]);} //output will return you an array as [["venue", 18],["inning", 38],["hithard", 4]]

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     1/5

   • Javascript Multidimensional Array Key-Value

     Top Answer

     Answered Jan 17, 2017 · 2 votes

     You can find the items with a combination of filter()

     and some()

     :

     obj.items.filter(v => v.tags.some(k => k.name === 'Aflevering2'));-

     let obj = { total: "1", items: [ { id: 43, title: "ThisIsTheTitle", promoted: false, sticky: false, weight: 10, created: { timestamp: 1482054, formatted: "17/01/2017" }, url: "http://...", airdate: { timestamp: 1484980, formatted: "17/01/2017" }, video: { id: 43, number_of_views: 1, duration: { seconds: 50, formatted: "00:00" }, required_login: false }, program: { id: 25, url: "http://...", title: "ProgrammaTitel" }, image: { uri: "public://...", full: "http://..." }, tags: [ { id: "4", name: "Map" }, { id: "7", name: "Aflevering2" } ] }]}let items = obj.items.filter(v => v.tags.some(k => k.name === 'Aflevering2'));console.log(items);

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     2/5

   • JavaScript Multidimensional Array

     Multidimensional arrays are not directly provided in JavaScript. If we want to use anything which acts as a multidimensional array then we need to create a multidimensional array by using another one-dimensional array. So multidimensional arrays in JavaScript is known as arrays inside another array. We need to put some arrays inside an array, then the total thing is working like a multidimensional array. The array, in which the other arrays are going to insert, that array is use as the multidimensional array in our code. To define a multidimensional array its exactly the same as defining a normal one-dimensional array. 

     One-Dimensional array:

     let arr = []; // Empty 1D arraylet arr1 = ["A", "B", "C", "D"] // 1D array contains some alphabetslet arr1 = [1, 2, 3, 4, 5] // 1D array contains some digits

     Multidimensional-Dimensional array:

     Method 1:

     1st, need to define some 1D arraylet arr1 = ["ABC", 24, 18000];let arr2 = ["EFG", 30, 30000];let arr3 = ["IJK", 28, 41000];let arr4 = ["EFG", 31, 28000];let arr5 = ["EFG", 29, 35000];// "salary" defines like a 1D array but it already contains some 1D arraylet salary = [arr1, arr2, arr3, arr4, a...

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     3/5

   • JavaScript Multidimensional Array

     Multidimensional arrays are not directly provided in JavaScript. If we want to use anything which acts as a multidimensional array then we need to create a multidimensional array by using another one-dimensional array. So multidimensional arrays in JavaScript is known as arrays inside another array. We need to put some arrays inside an array, then the total thing is working like a multidimensional array. The array, in which the other arrays are going to insert, that array is use as the multidimensional array in our code. To define a multidimensional array its exactly the same as defining a normal one-dimensional array. 

     One-Dimensional array:

     let arr = []; // Empty 1D arraylet arr1 = ["A", "B", "C", "D"] // 1D array contains some alphabetslet arr1 = [1, 2, 3, 4, 5] // 1D array contains some digits

     Multidimensional-Dimensional array:

     Method 1:

     1st, need to define some 1D arraylet arr1 = ["ABC", 24, 18000];let arr2 = ["EFG", 30, 30000];let arr3 = ["IJK", 28, 41000];let arr4 = ["EFG", 31, 28000];let arr5 = ["EFG", 29, 35000];// "salary" defines like a 1D array but it already contains some 1D arraylet salary = [arr1, arr2, arr3, arr4, a...

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     4/5

   • Javascript multidimensional array updating specific element

     Top Answer

     Answered Apr 02, 2012 · 5 votes

     PROBLEM:

     I'm betting that you have a one-dimensional array with strings stored in each. So your array actually looks like:

     array ( [0] => '...', [1] => '.X.', [2] => '...')

     When this is what you want:

     array ( [0] => array ( [0] => '.', [1] => '.', [2] => '.' ), [1] => array ( [0] => '.', [1] => 'X', [2] => '.' ), [2] => array ( [0] => '.', [1] => '.', [2] => '.' ))

     SOLUTION:

     When constructing your 2D array, make sure you explicitly declare each entry in board as an array. So to construct it, your code might look something like this:

     board = new Array();rows = 3;for (var i = 0; i < rows; i++) board[i] = new Array('.', '.', '.');

     Other Answers

     Answered Nov 01, 2017 · 76 votes

     I just had the same problem, but it had a more complex reason and I want to add it, in case someone finds this page searching for the same problem I had:

     I had created and filled a 2-dimensional array like this:

     var foo = Array(n).fill(Array(n).fill(0));-

     which creates a 2-dimensional n*n array filled with zeroes.

     Now when I tried to overwrite a cell like this

     foo[1][1] = 1;-

     I ended up with these values:

     [[0,1,0], [0,1,0], [0,1,0]]

     which is really surprising IMHO.

     The reason for this was, that there has only been one row, which had internally been referenced three times. So when I changed the first index in "the second" row, it effectively changed all rows.

     Bottom line: don't use Array.fill to create multi-dimensional arrays!

     Other Answers

     Answered Nov 29, 2020 · 1 votes

     An other way to create a 2D array in javascript is to use Array.from function

     var 2Darr = Array.from(Array(5), () => { return new Array(5).fill(0) })

     This will create a 5 x 5 array completely filled with 0. Array.from takes two parameters, the first one is an javascript iterable Object to extract the array from, the second one is an optional callback where we can specify something to apply to the array elements.

     Accessing the element can be done simply like in other languages.

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     5/5

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2. www.javascripttutorial.net › javascriptLearn JavaScript Multidimensional Array By Examples

   www.javascripttutorial.net › javascript

   • Cached

   JavaScript does not provide the multidimensional array natively. However, you can create a multidimensional array by defining an array of elements, where each element is also another array. For this reason, we can say that a JavaScript multidimensional array is an array of arrays.

3. stackoverflow.com › questions › 966225How can I create a two dimensional array in JavaScript?

   stackoverflow.com › questions › 966225

   • Cached

   Use Array Comprehensions. In JavaScript 1.7 and higher you can use array comprehensions to create two dimensional arrays. You can also filter and/or manipulate the entries while filling the array and don't have to use loops. var rows = [1, 2, 3]; var cols = ["a", "b", "c", "d"];

   Code sample

   var items = [

     [1, 2],

     [3, 4],

     [5, 6]

   ];...

   See more on stackoverflow

4. www.geeksforgeeks.org › javascriptJavaScript Multidimensional Array - GeeksforGeeks

   www.geeksforgeeks.org › javascript

   • Cached

   Dec 26, 2023 · JavaScript Multidimensional Array - GeeksforGeeks. Last Updated : 26 Dec, 2023. Multidimensional arrays are not directly provided in JavaScript. If we want to use anything which acts as a multidimensional array then we need to create a multidimensional array by using another one-dimensional array.

5. www.javascripthelp.org › multidimensional-arraysMultidimensional Arrays in JavaScript

   www.javascripthelp.org › multidimensional-arrays

   Mar 14, 2023 · In JavaScript, there’s no built-in support for multidimensional arrays. However, we can create them using nested arrays. Let’s see how we can create a 2D array: let matrix = [. [1, 2, 3], [4, 5, 6], [7, 8, 9] ]; Here, we’ve created a 3x3 matrix using an array of arrays.

6. www.programiz.com › javascript › multidimensional-arrayJavaScript Multidimensional Array - Programiz

   www.programiz.com › javascript › multidimensional-array

   • Cached

   Here is a simple example of a multidimensional array. Read the rest of the tutorial to learn more. Example. // multidimensional array // contains 3 separate arrays as elements const data = [[ 1, 2, 3 ], [ 1, 3, 4 ], [ 4, 5, 6 ]]; console.log(data); // Output : [ [ 1, 2, 3 ], [ 1, 3, 4 ], [ 4, 5, 6 ] ] Run Code.

7. www.gyata.ai › javascript › multidimensional-arraysMastering Multidimensional Arrays: A Comprehensive Guide to ...

   www.gyata.ai › javascript › multidimensional-arrays

   • Cached

   Apr 16, 2024 · Creating multidimensional arrays in JavaScript is a straightforward process. Essentially, you're creating an array where each element is also an array. Here's a simple example: let multiArray = [[1, 2, 3], [4, 5, 6], [7, 8, 9]];

8. People also ask

   How to create a multidimensional array in JavaScript?

   • However, you can create a multidimensional array by defining an array of elements, where each element is also another array. For this reason, we can say that a JavaScript multidimensional array is an array of arrays. The easiest way to define a multidimensional array is to use the array literal notation.

   Learn JavaScript Multidimensional Array By Examples

   www.javascripttutorial.net/javascript-multidimensional-array/

   See all results for this question

   How to add elements to a multidimensional array?

   • To add elements to a multidimensional array, we can use the push method like we would with a regular array. Let’s add a new row to our matrix: Now, our matrix looks like this: [1, 2, 3], [4, 5, 6], [7, 8, 9], [10, 11, 12] We can remove elements from a multidimensional array using the splice method.

   Multidimensional Arrays in JavaScript

   www.javascripthelp.org/learn/basics/multidimensional-arrays/

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   How to create two dimensional array in JavaScript?

   • In JavaScript 1.7 and higher you can use array comprehensions to create two dimensional arrays. You can also filter and/or manipulate the entries while filling the array and don't have to use loops. grid = [ ["1a","1b","1c","1d"], ["2a","2b","2c","2d"], ["3a","3b","3c","3d"]

   How can I create a two dimensional array in JavaScript?

   stackoverflow.com/questions/966225/how-can-i-create-a-two-dimensional-array-in-javascript

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   How to delete a multidimensional array in JavaScript?

   • 1 - The number of elements to delete. If you want to delete both arrays, you can use the code studentsData.splice(0,2). Remove the last element using the pop () method. If you want to remove the last element from a multidimensional array, you can use the pop () method. Remove Element From Outer Array // remove the array element from outer array

   JavaScript Multidimensional Array - Programiz

   www.programiz.com/javascript/multidimensional-array

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9. www.tutorialstonight.com › js › javascriptJavascript Multidimensional Array (2D Array) - Tutorials Tonight

   www.tutorialstonight.com › js › javascript

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   The second way to create a multidimensional array is using an array constructor. This is done by using the Array() method. var arr = Array( [1, 2, 3], [4, 5, 6] ); Another idea with the array constructor is below. // 2 × 3 array var arr = Array(2).fill(Array(3)); //setting value arr[0][1] = 4; Accessing elements in multidimensional array. A ...