A JavaScript iterable is an object that has a Symbol.iterator. The Symbol.iterator is a function that returns a next() function. An iterable can be iterated over with the code: for (const x of iterable) { }

Jan 17, 2013 · To achieve this we can use the built in Object.keys() function to retrieve all the keys of an object in an array. We then can split up the iteration into multiple for loops and …

Mar 7, 2025 · In order to be iterable, an object must implement the [Symbol.iterator]() method. This means that the object (or one of the objects up its prototype chain) must have a property …

Feb 26, 2015 · You need to specify Symbol.iterator property for SomeClass which returns iterator for class instances. Iterator must have next() method, witch in turn returns object with done …

You can iterate through an object's keys using Object.keys() and then just encapsulate it normally with an iterator function: function makeIterator(obj) { let keys = Object.keys(obj); let …

Aug 21, 2024 · The properties of the object can be iterated over using a for..in loop. This loop is used to iterate over all non-symbol iterable properties of an object. Some objects may contain …

Aug 22, 2024 · The iterable protocol allows JavaScript objects to define or customize their iteration behavior. To be iterable, an object must implement the @@iterator method. This …

May 10, 2024 · Objects that can be used in for..of are called iterable. Technically, iterables must implement the method named Symbol.iterator. The result of obj[Symbol.iterator]() is called an …

Apr 3, 2025 · The iterable protocol allows JavaScript objects to define or customize their iteration behavior, such as what values are looped over in a for...of construct. Some built-in types are …

Jan 4, 2021 · JavaScript provides many ways to iterate over an array or string, ranging from the standard for-loop to more modern variation like the ES6 for/of loop. However, because objects …