JavaScript for-loop alternative: repeat(n, function(i) { … });

Question

This is the regular for-loop:

for (var i = 0; i < n; i++) { ... }

It is used to iterate over arrays, but also to just repeat some process

Answer 1

It seems pretty valid. I honestly don't think that performance would decrease too much. But there is however one big downside, that is easily fixable: the break statement.

function repeat(n, f) {
   for (var i = 0; i < n; i++) {
      var tcall=i;
      tcall.die=function(){i=n}
      f.call(tcall);
   }
}  

This way you would be able to call this.die() instead of break; which I think would throw an error.