AudioParamMap

{{APIRef("Web Audio API")}} 

The AudioParamMap interface of the Web Audio API represents an iterable and read-only set of multiple audio parameters.

An AudioParamMap instance is a read-only Map-like object, in which each key is the name string for a parameter, and the corresponding value is an {{domxref("AudioParam")}}  containing the value of that parameter.

Instance properties

The following methods are available to all read-only Map-like objects (the below links are to the {{jsxref("Map")}}  global object reference page).

• {{jsxref("Map/size", "size")}} 
  • : Returns the number of entries in the map.

Instance methods

The following methods are available to all read-only Map-like objects (the below links are to the {{jsxref("Map")}}  global object reference page).

• {{jsxref("Map/entries", "entries()")}} 
  • : Returns a new iterator object that yields entries in [key, value] pairs in the map in insertion order.
• {{jsxref("Map/forEach", "forEach()")}} 
  • : Calls a provided {{glossary("callback function")}}  once for each value and key present in the map, in insertion order.
• {{jsxref("Map/get", "get()")}} 
  • : Returns the {{domxref("AudioParam")}}  value associated with the string key, or undefined if there is none.
• {{jsxref("Map/has", "has()")}} 
  • : Returns a boolean indicating whether a key is present in the map or not.
• {{jsxref("Map/keys", "keys()")}} 
  • : Returns a new iterator object that yields the string keys in the map in insertion order.
• {{jsxref("Map/values", "values()")}} 
  • : Returns a new iterator object that yields the {{domxref("AudioParam")}}  values in the map in insertion order.

Specifications

{{Specifications}} 

Browser compatibility

{{Compat}}