ES6 ✅

Author: suhailroushan13

Advanced-JavaScript/14. ES6/10.js

@@ -44,9 +44,12 @@ console.log(map1);
 
 console.log(map1.size);
 map1.set("Person", { name: "Suhail" });
+map1.set("Student", { name: "Roushan", age: 22 })
+map1.set("Students", { name: "Roushan", age: 22 });
+
 console.log(map1);
 
-console.log(map1.size);
+console.log("Size is " + map1.size);
 
 let map3 = new Map();
 

Pratice/27.js

@@ -0,0 +1,36 @@
+let a = new Map();
+console.log(a);
+
+a.set("person", { name: "Suhail" });
+
+console.log(a);
+
+console.log(a.get("person"));
+
+console.log(a.has("person"));
+
+a.delete("person");
+console.log(a);
+
+a.set("1", "Suhail");
+a.set("2", "Roushan");
+
+console.log(a);
+
+for (let key of a) {
+  console.log(key);
+}
+
+// WeakMap can only have Object as Keys
+// you cannot iterate over WeakMap
+let b = new WeakMap();
+console.log(b);
+let obj = {};
+b.set(obj, "Hello");
+console.log(b);
+console.log(b.get(obj));
+console.log(b.has(obj));
+console.log(b.delete(obj));
+console.log(b);
+
+console.log(b.get(obj));

Pratice/28.js

@@ -0,0 +1,14 @@
+// Set
+
+let a = new Set([1, 2, 3, 4, 5, 1]);
+let b = new Set([1, 2, 3, 1, 1, 1, 1]);
+console.log(a);
+console.log(b);
+
+a.add(10);
+console.log(a.values());
+console.log(a.has(2));
+console.log(a.delete(10));
+console.log(a);
+console.log(a.clear());
+console.log(a);