Method signature Subscribable.subscribe
    
    
      
    
    
      
      Stay organized with collections
    
    
      
      Save and categorize content based on your preferences.
    
  
  
      
    
  
  
  
  
  
    
  
  
    
    
Allows a callback to be added. This callback will be called whenever the value
is updated.
Signature
subscribe(callback: (value: T) => void): () => void;
Details
Parameters
| Name | Type | Optional | Description | 
| callback | (value: T) => void | No |  | 
Returns
() => void
An unsubscribe function.
  
  
    
  
 
  
    
    
      
       
    
    
  
  
  Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
  Last updated 2025-04-09 UTC.
  
  
  
    
      [null,null,["Last updated 2025-04-09 UTC."],[],[]]