[Home](./index.md) > [rc-js-util](./rc-js-util.md) > [\_Map](./rc-js-util._map.md) > [push](./rc-js-util._map.push.md) ## \_Map.push property Used with maps that store arrays. Where an array exists for a given key the value will be appended to that array, otherwise a new array will be created containing the value. **Signature:** ```typescript static readonly push: typeof mapPush; ``` ## Remarks See [mapPush()](./rc-js-util.mappush.md).