Maps in JS

PranavTrip · web-flow · commit fa9ca84bae02 · 2021-05-22T20:33:19.000+05:30
diff --git a/maps.js b/maps.js
@@ -0,0 +1,42 @@
+// Maps in JavaScript
+
+// Creating a new MAP
+let myMap = new Map();
+
+// Defining keys
+const key1 = "myStr",
+  key2 = {},
+  key3 = function () {};
+console.log(myMap);
+
+// Setting the keys in the Map
+myMap.set(key1, "This is a string");
+myMap.set(key2, "This is an object");
+myMap.set(key3, "This is an empty function");
+
+// Size of the Map
+console.log(myMap.size);
+console.log(myMap);
+
+// Getting the values in the Map
+let value1 = myMap.get(key1);
+let value2 = myMap.get(key2);
+let value3 = myMap.get(key3);
+console.log(value1, value2, value3);
+
+// Deleting key3 from Map
+myMap.delete(key3);
+console.log(myMap);
+
+// Checking if the Map has key3 or not
+let res = myMap.has(key3);
+console.log(res);
+
+// Printing the keys of map
+console.log("Keys in Map are :", myMap.keys());
+
+// Printing the values of the map
+console.log("Values in Map are: ", myMap.values());
+
+// Printing the entries of the map
+console.log("Entries of the Map are: ", myMap.entries());
