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--- blocks:app-note:interacting-from-a-custom-web-page [2021-08-31 17:15]
mattias [PIXILAB Websocket API]
+++ blocks:app-note:interacting-from-a-custom-web-page [2022-09-22 09:54]
admin Documented add can also do append
@@ Line 132: / Line 132: @@
 === pubSubPeer.add ===
-This is similar to the //set// function, and takes the same two parameters. However, it may only be used with numeric values. You can use it to increase or decrease (by passing a negative value) a numeric property, such as a volume value. This is often simpler for such incremental adjustments than maintaining a subscription to the value in order to do the calculation on the client side based on the current value and then using the //set// function to change the value.
+This is similar to the //set// function, and takes the same two parameters. When used with a numeric property, the value you specify will be added to the current value. Pass a negative value to subtract. When used with a string property, the value will be //appended// (concatenated) to the current string value.
+The //add// methid is often simpler for such incremental adjustments than maintaining a subscription to the value in order to do the calculation on the client side based on the current value and then using the //set// function to change the value.