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);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);js initialize 2d array
let data = [];
for (let row=0; row<rows; row++) {
data.push(new Array(cols).fill('#'));
};creating a 2d array in js
var x = new Array(10);
for (var i = 0; i < x.length; i++) {
x[i] = new Array(3);
}
console.log(x);creating 2d array in javascript
var [r, c] = [5, 5];
var m = Array(r).fill().map(()=>Array(c).fill(0));Copyright © 2021 Codeinu
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