How do you easily create empty matrices javascript?

Question

In python, you can do this:

[([None] * 9) for x in range(9)]

and you\'ll get this:

[[None, None, None, None, None, None, No         


        

Answer 1

Use this function or some like that. :)

function createMatrix(line, col, defaultValue = 0){ 
    return new Array(line).fill(defaultValue).map((x)=>{ return new Array(col).fill(defaultValue); return x; }); 
}
var myMatrix = createMatrix(9,9);