JSFiddle - React, Tailwind, and code Playground

by Serge Zahharenko

JavaScript

var matrix = []
var num = 0;
var i=0;
for (i=0;i<=3;i++) {
    var m = i;
    var red = i;
    for (p=0;p<=m;p++) {
        num++;
        document.write('ELEM:' + num + ' Matrix'+ i + ' = ' + red + ':' + (m-red));
        document.write("<br />");
        matrix.push({
            e: num,
            m: i,
            y: red,
            x: (m-red)
        });
        red--;
    }
}

$.each(matrix, function(key, value) { 
  alert(key+ ': ' + value.e + ': ' + value.y + ': ' + value.x); 
});