JavaScript: Map.prototype.get
New in JS2015.
map_obj.get(key)
-
Return the value of the key key in map map_obj.
If key isn't found, return
undefined
.
const m = new Map([ [4, "n4"], [5, "n5"] ]); // get the value of a key console.log (m.get (5)); // "n5" console.log (m.get (99)); // undefined