Web Reference: Since we are guaranteed that each of the so iterated array items is itself a two-entry array, we can use destructuring to directly assign variables key and value to its first and second item. Feb 2, 2024 · Today’s post will teach us how to iterate the object or dictionary to extract the key-value pairs in JavaScript. We can return an array of [key, value] pairs of string-key enumerable properties of a given object using the Object.entries() method. This is similar to iterating with a for...in loop. Jul 29, 2025 · An object is iterable if it defines its iteration behavior, such as what values are looped over in a for...of construct. Some built-in types, such as Array or Map, have a default iteration behavior, while other types (such as Object) do not.
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