[javascript] Dynamically add data to a javascript map

Is there a way I can dynamically add data to a map in javascript. A map.put(key,value)? I am using the yui libraries for javascript, but didn't see anything there to support this.

Javascript now has a specific built in object called Map, you can call as follows :

   var myMap = new Map()

You can update it with .set :

   myMap.set("key0","value")

This has the advantage of methods you can use to handle look ups, like the boolean .has

  myMap.has("key1"); // evaluates to false 

You can use this before calling .get on your Map object to handle looking up non-existent keys