Draw triangle js

<script>
        function onDrawTriangleBtnClick() {
            var n = jsConsole.readInteger("#tb-number");
            for (var row = 1; row <= n; row++) {
                for (var column = 1; column <= row; column++) {
                    jsConsole.write(column + " ");
                }
                jsConsole.writeLine()
            }
        }

    </script>