Test Your JavaScript Skills : ES13 (JavaScript 2022)

Introduction

Namaste, In this blog I will discuss 10 code scenarios on Javascript .

Identify the output of the below program
```
 class Myclass {
     static eno;
     static name="ram";    

 };
 console.log(Myclass.name);
```
a.ram

b.undefined

c.error

d.null

e.1

Answer:a

Reason:The public static field can be accessed.

Identify the output of the below program

 class Myclass {
     #eno=10;
     #ename="ram";    
     static show(){
         console.log(Myclass.eno);
     }
 };
 Myclass.show();

a.Show

b.10

c.ram

d.undefined

e.error

Answer:d

Reason:Instance variable cannot be accessed on a class.

Identify the output of the below program


 class Myclass2 {
     #data=100;    
     #show() {
        console.log(this.#data);
     }    
     show2(){
         this.#show();
     }
 };
 let obj2 = new Myclass2();
 obj2.show2();

a.100

b.undefined

c.error

d.null

e.1

Answer:a

Reason:Private method can be called internally within a class.

Identify the output of the below program

 class Myclass {
     static eno;
     name="ram";    
     static show() {
         console.log(Myclass.name); 
     }
 };
 Myclass.show();

a.ram

b.undefined

c.null

d.Myclass

e.error

Answer:d

Reason:The class name property is used which returns the name of the class.

Identify the output of the below program
```
 class Myclass3 {
     static {
         console.log("Static block");
     }
 };
```
a.Undefined

b.No output

c.error

d.Static block

e. null

Answer:d

Reason:The static block is executed when the class code is parsed.

Identify the output of the below program

 class Myclass2 {
     static #data=100;    
     #show() {
        console.log(Myclass2.#data);
     }    
     show2(){
         this.#show();
     }
 };
 let obj2 = new Myclass2();
 obj2.show2();

a.undefined

b.error

c.null

d.10

e.100

Answer:e

Reason:The private static element can be accessed within the class.

Identify the output of the below program
```
 class Myclass {
     static eno;
     static #name="ram";    

 };
 console.log(Myclass.name);
```
a.ram

b.Myclass

c.error

d.undefined

e.null

Answer:b

Reason:The default name property of the class is used which identifies the class.

Identify the output of the below program


 class Myclass2 {
     static #data=100;    
     #show() {
        console.log(this.#data);
     }    
     show2(){
         this.#show();
     }
 };
 let obj2 = new Myclass2();
 obj2.show2();

a.error

b.100

c.undefined

d.null

e.1

Answer:a

Reason:Static element cannot be accessed on this keyword. The data does not exists on the object.

Identify the output of the below program
```
 class Myclass3 {
     static #i=10;
     static {
         Myclass3.#i=20;
     }
     static {
         console.log(Myclass3.#i);
     }
 };
```
a.10

b.20

c.error

d.no output

e.undefined

Answer:b

Reason:The class can have multiple static blocks. They are executed when the class code is parsed in top down order.
Identify the output of the below program
```
class Myclass {
    static eno;
    static #ename="ram";    

};
console.log(Myclass.#ename);
```
a.ram

b.error

c.null

d.undefined

e.0

Answer:b

Reason:Static private field cannot be accessed outside the class.

Test Your JavaScript Skills : ES13 (JavaScript 2022) - 36

Part 36

Table of contents

Introduction

Test Your JavaScript Skills : ES13 (JavaScript 2022) - 36

Part 36

Table of contents

Introduction

Did you find this article valuable?