Javascript for monetary values?

Question

I have this function for monetary values:

function formatMonetary(v){   
    v = v.replace(/\D/g,"");
    v = v.replace(/(\d{1})(\d{15})$/,"$1.$2");
    v = v.replace(/(\d{1})(\d{11})$/,"$1.$2");
    v = v.replace(/(\d{1})(\d{8})$/,"$1.$2");
    v = v.replace(/(\d{1})(\d{5})$/,"$1.$2");
    v = v.replace(/(\d{1})(\d{1,2})$/,"$1,$2");
    return v;   
}

When I use the number 1 or 1.1 it returns to me:

0,01
0,11

I wanted her to return the number to me this way:

1,00
1,10

In other words, I wanted her to return the number to me by completing the decimals on the left, so it’s possible?