org.apache.tapestry5

## Class QueryParameterConstants

- java.lang.Object
- - org.apache.tapestry5.QueryParameterConstants

-     public class QueryParameterConstants
      extends Object

  Defines constants for common query parameters passed in requests from the client.
  See Also:
    `RequestParameter`

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static String` | `ZONE_ID` The client-side id of the element being updated in an Ajax request.

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `QueryParameterConstants()`

  - ### Method Summary

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Field Detail

    - #### ZONE_ID

          public static final String ZONE_ID

      The client-side id of the element being updated in an Ajax request. This is very useful when writing new content that may update the same zone dynamically, even when the `Zone` has allocated a dynamic client-side id during initial render.
      See Also:
        Constant Field Values

  - ### Constructor Detail

    - #### QueryParameterConstants

          public QueryParameterConstants()

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