Create a two-dimensional array in JavaScript

It is well known that arrays in JavaScript are pseudo-arrays, so it is not possible to create a two-dimensional array directly like other languages. You need to manually create a two-dimensional array. For example:

let arr = new Array(5)
for(let i = 0;i < arr.length;++i){
    
    
	arr[i] = new Array(5)
}

Write a function to facilitate creation

function createArrTwo(num1,num2,data){
    
    
	let arr = new Array(num1)
	for (let i = 0; i < num1; ++i) {
    
    
		arr[i] = new Array(num2)
		for (let x = 0; x < num2; ++x) {
    
    
			arr[i][x]=data
		}
	}
	return arr
}

Use this function

let arr = createArrTwo(5,5,0)