Question

I have a following source code php+js: http://pastebin.org/277948

I want to rewrite it using pure JS, but can’t imagine the way.

Any advices are appreciated.

Answer 1

You can use the every method to test if all elements in the array satisfy the predicate.

if (inp && vals.every(Boolean)) {
  // or:  vals.every(function(x){return x;})
  ...
}

But if you have to target browsers that does not support the every method, you can evaluate the condition with a for loop.

if (inp) {
   accept = true;
   for (var i = vals.length-1; i >= 0; -- i)
     if (!vals[i]) {
       accept = false;
       break;
     }
   if (accept) {
     ...
   }
}