[Home](./index.md) > [com-tools](./com-tools.md) > [defineListenableProperties](./com-tools.definelistenableproperties_1.md) ## defineListenableProperties() function **Signature:** ```typescript export function defineListenableProperties(obj:T,propArray:string[],options?:ListenablePropOpts):any; ``` ## Parameters

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

**Returns:** any