[Home](./index.md) > [server](./server.md) > [IterationMap](./server.iterationmap.md) > [forEach](./server.iterationmap.foreach.md) ## IterationMap.forEach() method Executes a provided function once for each key-value pair. **Signature:** ```typescript forEach(callbackfn: (value: V, key: K, map: IterationMap) => void, thisArg?: any): void; ``` ## Parameters

Parameter	Type	Description
callbackfn	(value: V, key: K, map: [IterationMap](./server.iterationmap.md)<K, V>) => void	Function to execute for each element.
thisArg	any	_(Optional)_ Value to use as this when executing callback.

**Returns:** void