[Solved] Increment all values of [closed]

by 


var count_br = "4,7,10";
var count_ = count_br.split(",");
var i;
for (i = 0; i < count_.length; ++i) {            
    for(let idx in count_) count_[idx] = (parseInt(count_[idx])+4).toString() 
}
console.log(count_)

solved Increment all values of [closed]