SOURCE

let output = "";
for(let i = 1; i <= 9; i++) {
    for(let j = 1; j <= i; j++) {
       output += i + " * " + j + " = " + i * j + "\xa0\xa0\xa0\xa0";
    }
     console.log(output);
     output = "";
}

	<script src = ./2.js></script>