[Home](./index.md) > [com-tools](./com-tools.md) > [Decide](./com-tools.decide.md) > [then](./com-tools.decide.then.md) ## Decide.then() method 监听决议，当被决议后，会自动回调 cb，并回传最新的 this.value **Signature:** ```typescript then(cb: (val: V) => void): void; ``` ## Parameters

Parameter	Type	Description
cb	(val: V) => void

**Returns:** void