[Home](./index.md) > [server](./server.md) > [ParticleEmitter](./server.particleemitter.md) > [setLifetime](./server.particleemitter.setlifetime.md) ## ParticleEmitter.setLifetime() method Sets the lifetime of an emitted particle in seconds. **Signature:** ```typescript setLifetime(lifetime: number): void; ``` ## Parameters

Parameter	Type	Description
lifetime	number	The lifetime of an emitted particle in seconds.

**Returns:** void