js array two dimensional
// declaration of a two-dimensional array
// 5 is the number of rows and 4 is the number of columns.
const matrix = new Array(5).fill(0).map(() => new Array(4).fill(0));
console.log(matrix[0][0]); // 0js array two dimensional
// declaration of a two-dimensional array
// 5 is the number of rows and 4 is the number of columns.
const matrix = new Array(5).fill(0).map(() => new Array(4).fill(0));
console.log(matrix[0][0]); // 0how to make a 2d array in js
let x = [
[1, 2, 3],
[4, 5, 6],
[7, 8, 9]
];
console.log(items[0][0]); // 1
console.log(items[0][1]); // 2
console.log(items[1][0]); // 4
console.log(items[1][1]); // 5
console.log(items);2d array javascript
var items =[
[1, 2, 3],//this is row 0
[4, 5, 6],//this is row 1
[7, 8, 9] //this is row 2
//cullom 0 cullom 1 cullom2
]
console.log(/* variable name */ items[/*row*/ 0][/*cullom*/ 0]);how to make a 4 dimensional array in JavaScript
/*having the previous array easy to make is very useful*/
function Array2D(x, y){
let arr = Array(x);
for(let i = 0; i < y; i++){
arr[i] = Array(y);
}
return arr;
}
function Array3D(x, y, z){
let arr = Array2D(x, y);
for(let i = 0; i < y; i++){
for(let j = 0; j < z; j++){
arr[i][j] = Array(z);
}
}
return arr;
}
function Array4D(x, y, z, w){
let arr = Array3D(x, y, z);
for(let i = 0; i < x; i++){
for(let j = 0; j < y; j++){
for(let n = 0; n < z; n++){
arr[i][j][n] = Array(w);
}
}
}
return arr;
}
/*making the array*/
let myArray = Array4D(10, 10, 10, 10);how to read 2 dimensional array in javascript
activities.forEach((activity) => {
activity.forEach((data) => {
console.log(data);
});
});2d array in javascript
function createArray(row,column) {
let arr = [];
for(var i=0; i<row; i++){
arr[i] = [Math.floor(Math.random() * (10))];
for(var j=0;j<column;j++){
arr[i][j]= [Math.floor(Math.random() * (20))];
}
}
return arr;
}
var arrVal = createArray(4, 5);
console.log(arrVal);Copyright © 2021 Codeinu
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