JS basic part hand exercises

Copy properties

  var extend = function(to, from){
    
    for(var i in from){
    
      if(!from.hasOwnProperty(i)) continue;
      Object.defineProperty(
        to,i,Object.getOwnPropertyDescriptor(from,i)
      );
    }

    return to;
  }

Longest element found

  function findLongest(array){
    
    return array.reduce(function(longest,item){
    
      return item.length > longest.length ? item:longest
    },'');
  }