How to find out below solution in JavaScript

I’m new for development area, pls help me.
**My code

    var totalNumberofRows = 5; 
    var output = '';
    for (var i = 1; i <= totalNumberofRows; i++) {
     
         for (var j = 1; j <= i; j++) {
            //  console.log('tes')
            output +=  i;
         }
        console.log(output+' ');
        output = '';
    }

Output:
1
22
333
4444
55555

Expected Output:

1
22
333
55555
88888888

Pls some one suggest to me

>Solution :

Have you intended something similar to the Fibonacci sequence?

var totalNumberofRows = 5;
var output = '';

for (var i = 1; i <= totalNumberofRows; i++) {
    var next = fibo(i + 1);
    
    for (var j = 1; j <= next; j++) {
        output += next;
    }

    console.log(output + ' ');
    output = '';
}

function fibo(n) {
    if (n >= 2) {
        return fibo(n - 1) + fibo(n - 2)
    } else {
        return n; 
    }
}