Update 3d matrix with coordinates in javascript -

i'm trying create 3d matrix in javascript, , want update values using coordinates:

var xaxis = []; var yaxis = []; var zaxis = []; var dimensions = 4;  //initalize matrix  (var i=0;i<dimensions;i++){     xaxis.push(0); } (var j=0;j<dimensions;j++){     yaxis.push(xaxis); } (var k=0;k<dimensions;k++){     matrix.push(yaxis); }  //check value of 1 point in matrix matrix[1][2][3]; //returns 0 expected //update value of matrix using same coordinates matrix[1][2][3] = 2; 

when run last step, not update expected 1[2][3] coordinates, updates every third value of every array 2 see in image:

how can manage update value want?? mean, number 2 should in 1 coordinate point, in case 1[2][3].

note: think it's got might assigning original arrays matrix instead of new copies of themselves, when update 1 coordinate, i'm updating original array, , other arrays pointing @ original, that's why it's been reflected there well?

you push arrays reference.

consider creating matrix way:

var matrix = [0, 1, 2, 3].map(function() {     return new array(4).fill().map(function(){         return new array(4).fill(0);     }); });