[JS] Map built in functions

new Map() – create a new map. map.set(key, value) – set key and value pair. map.get(key) – return key's value. If no key exist then return undefined. map.has(key) – If key is exist then true, if not then false. map.delete(key) – Delete the key. map.clear() – Clear the map. map.size – Return the size of the map (How many keys in the map).

var map = new Map();
map.set("1", "str1");
map.set(1, "num1");
map.set(true, "bool1");
map.set("test", "Some Value");
console.log(map);
console.log(map.has("test"));
console.log(map.get("test"));
console.log("Size: ", map.size);
map.delete("1");
console.log("Size: ", map.size);
console.log(map.get("1"));
console.dir(map);
map.clear();
console.dir(map);