Map Lookup

Read a value by key from a Map.

map_lookup.js

const item = "tea";
const price = new Map([
  ["tea", 3],
  ["cake", 5],
  ["juice", 4],
]).get(item);

console.log("item=" + item);
console.log("price=" + price);

map-lookup A `Map` stores key-value pairs. Use `.get(key)` when the lookup key is data instead of a fixed property name.