Update js codes.docx

Author: priya42bagde

js codes.docx

@@ -2783,4 +2783,22 @@ const myproto = myProtoType("priya")
 console.log(myproto);
 console.log(myproto.getName());
 ==========================================================================================================================================================================
-
+Set: It contains only unique values.
+let arr =[1,2,3]
+let obj = new Set(arr) //set takesarray, string, object etc
+obj.add(4)
+obj.delete(3)
+console.log(obj)
+
+var obj1={name:"priya"}
+obj.add(obj1)
+console.log(obj)
+======================================================================================================================================================================
+Map: store in key value pair
+let myMap = new Map([["a1", "priya"],["a2","riya"]])
+myMap.set("a2","supriya")
+console.log(myMap.get("a2"))// will get last value which we will assign
+for(let [key,value] of myMap){
+  console.log(`keys ${key}, value ${value}`)
+}
+=======================================================================================================================================================================