ffl

ffl is for loop with .. and callback vars

ffl('1..3', ()=>{
    console.log(' >> hi from ffl\n')
});

var l=[0]
ffl('1..3', ()=>{
    console.log(l[0]+' >> hi from ffl\n')
},l);

ffl('1..3', ()=>{
    console.log(a['a']+' >> hi from ffl\n')
},a);


ffl('1..3', ()=>{
    console.log(a['a']+' >> hi from ffl\n')
},);