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Efficient array filtering based on dynamic criteria


i would use Array.prototype.filter:

var filtered = data.filter(function
(item) {
  var main, critObj;
  for (main in criteria) {
    critObj = criteria[main];
    if (critObj.min && critObj.min >=
item[main]) {
      return false;
    }
    if (critObj.max && critObj.max <=
item[main]) {
      return false;
    }
  }
  return true;
});

return falseif it should not be included in your filtered list. inside the for-loop, the function just checks if the criteria has a min, and if if this is bigger than the same property in the array item. if so, it just returns false for this element (the same of course for the max-property).

if both fit, the function returns true, and i will be included in your filtered list!

edit: now with fixed bin


Categories : Javascript

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