some change in object code

Author: ATechopS

Object_basic.js

@@ -39,7 +39,7 @@ iam.name="abhi"
 
 // for use symbol in object as a symbol we will use squre bracket in key they will can acces key as a symbol
 
-// console.log(iam);
+ console.log(iam);
 
 // we can treet function as variable
 // it is a way to create a fuction for an object
@@ -52,6 +52,7 @@ function greetingg (){
     console.log(`hello ${iam.name} your age is ${iam.age} and your email id is ${iam.email} `);
 } 
 
+// here declearing function for a object we can use this for acces object data
 iam.greeting = function (){
   console.log(`hello ${this.name} is ${this.age} and your email id is ${this.email} `);
 } 

Object_part2.js

@@ -8,5 +8,108 @@ const tinderuser= new Object() //sigleton object
  tinderuser.age=18
  tinderuser.IsLogIn=true
 
-console.log(tinderuser);
+// console.log(tinderuser);
 
+// nested object : means object in object
+// declearation
+const regularUser={
+    email:"Some@gmail.com",
+    fullname:{ //fullname is object 
+        userfirstName:"abhishek",
+        userLastName:"pandey"
+    }
+}
+
+// we can acces nested object by dot 
+// we will use ? if will conect by api response otherwise we will need to use ifelse means if object is availiable then will give output otherwise leave
+// console.log(regularUser.fullname);
+// console.log(regularUser.fullname?.userLastName);
+
+// same as array we can combine object also 
+const Obj1={a:45,b:67}
+const Obj2={c:85,d:35}
+
+// const Obj3={Obj1,Obj2}
+// console.log(Obj3);
+
+// we can perform function also as array
+const obj3=Object.assign(Obj1,Obj2)//output :{ a: 45, b: 67, c: 85, d: 35 } , first will get target means empaty it will modify target by sorce by merge and will give target as a new object
+
+// Object.assign(target,sorce one or more seprate by commas)
+ //all values will combine and new object will get 
+// will create a new object as object1,and Object2 
+console.log(obj3);
+console.log(Obj1);
+
+// one more spread method for combine object  as we done in array
+const obj3_={...Obj1,...Obj2} //it is a very simplest way for combine 
+
+// data come from database as many object in array
+
+const data_=[
+    {
+        username:"avi898",
+        password:"6869896"
+    },
+    {
+        username:"dsfji898",
+        password:"6869896"
+    },
+    {
+        username:"avinas898",
+        password:"6869896"
+    }
+    ,
+    {
+    }  
+]
+
+// console.log(data_[1].password);//here we written 1 because we all looking from array so we will give index then we will get value from object
+
+// console.log(Object.keys(tinderuser)); //when we will use Object then we need to tell about which object we all talking
+// we will get output in array mean now we can put loop on that 
+// it is very important
+
+// as we get keys as array we can get value also as array
+// console.log(Object.values(tinderuser));
+
+
+// console.log(Object.entries(tinderuser));// by entries will create each keys and value as a value
+
+// very important in what data user or we are performing loop want we have not then can crash so we will use a property for check is value availiable in Object if will avaliable we will get output true otherwise false
+
+console.log(tinderuser.hasOwnProperty("ru"));
+
+
+// ******************* D_structuring******************
+
+// here declearing a object which name is course
+const course={
+    coursename:"python",
+    price:898,
+    course_teacher:"code_with_harry"
+}
+
+// course.course_teacher
+
+// Mostly people use this way 
+// value extract from object
+const {course_teacher:instructer}=course // we can change name of key also after use : instructer
+console.log(instructer); //it d_structuring 
+// if anywhere we will see curly braces thenwe  will know there happenig destucturing
+
+// **********************API*************************
+
+// when we will give our work to anyone that is api
+// in previous time api call come in xml but now come in json
+// json 
+// {
+//     // its a json
+//     // in json keys and value will in string
+//    "myname":"ravi",
+//   " coursename" : "python in hindi",
+//    "price": "50"
+
+// }
+
+// sometimes we will get api in array for in array will see many objects