JSFiddle - React, Tailwind, and code Playground

by LyndseyB

HTML

Print out the table in a matrix like fashion, each number formatted to a width of 4 (The numbers are right-aligned and strip out leading/trailing spaces on each line). The first 3 line will look like:

1   2   3   4   5   6   7   8   9  10  11  12
2   4   6   8  10  12  14  16  18  20  22  24
3   6   9  12  15  18  21  24  27  30  33  36
Submit your solution in a file (some file name).(py2| c| cpp| java| rb| pl| php| tcl| clj| js| scala| cs| m| py3| hs| go| bash| lua) or use the online editor.

JavaScript

var i = 1, stop = 1, output = '';
for(i; i<=stop; i++) {
   console.log(i + next(i,stop));
}
function next(i,j) {
    if(j <= 12) {        
        j++;
        output+= (i+i);
        next((i),j);
    }
    return output;   
}