[Home](./index.md) > [com-tools](./com-tools.md) > [defineListenableProperty](./com-tools.definelistenableproperty.md) ## defineListenableProperty() function **Signature:** ```typescript export function defineListenableProperty(obj:T,prop:string,options?:ListenablePropOpts):any; ``` ## Parameters

Parameter	Type	Description
obj	T
prop	string
options	[ListenablePropOpts](./com-tools.listenablepropopts.md)<T>	_(Optional)_

**Returns:** any