JavaScript: filter() for Objects
- by AgileMeansDoAsLittleAsPossible
ECMAScript 5 has the filter() prototype for Array types, but not Object types, if I understand correctly.
How would I implement a filter() for Objects in JavaScript?
Let's say I have this object:
var foo = {
bar: "Yes"
};
And I want to write a filter() that works on Objects:
Object.prototype.filter = function(predicate) {
var result = {};
for (key in this) {
if (this.hasOwnProperty(key) && !predicate(this[key])) {
result[key] = this[key];
}
}
return result;
};
This works when I use it in jsfiddle (http://jsfiddle.net/MPUnL/4/), but when I add it to my site that uses jQuery 1.5 and jQuery UI 1.8.9, I get JavaScript errors in FireBug.
