Test your JavaScript Skills : break & continue Keywords

Introduction

Namaste, In this blog I will discuss 7 code scenarios on break & continue keywords.

Identify the output of the below program
```
 let i=10;
 while (true) {
     i++;
     if (i>15)
      break;
 }

 console.log(i);
```
a.error

b.15

c.16

d.no output

e.undefined

Answer:c

Reason:The loop breaks when i is 16.

Identify the output of the below program

 outer: for (let i=0;i<10;i++) {      
     for (let j=2;j<10;j++) {
         if (j==5) 
             break outer;
     }    
 }
 console.log(i);

a.11

b.10

c.error

d.undefined

e.no output

Answer:c

Reason:The let variable has block scope

Identify the output of the below program

 let i=2;
 while(i<10) { 
   i++;
   if (i> 6)
        i++;
   else
       break;
 }
 console.log(i);

a.6

b.3

c.11

d.no output

e.undefined

Answer:b

Reason:By computation the value of i is 3

Identify the output of the below program
```
 let i=2;
 while(i<10) {
     (i < 6) ? i++ : continue; 
     i++;
 }

 console.log(i);
```
a.11

b.10

c.error

d.no output

e.undefined

Answer:c

Reason:The continue keyword cannot be used with ternary operator

Identify the output of the below program


 flagpost: {  
     var i=10;
     break flagpost;
     console.log(i+1);  
  }
  console.log(i);

a.10

b.undefined

c.11

d.no output

e.error

Answer:a

Reason: The var variable has global scope

Identify the output of the below program
```
 flagpost: {  
     break flagpost;
     console.log("1");  
  }
  console.log("2");
```
a.2

b.1

c.error

d.no output

e.undefined

Answer: 2

Reason: By computation the result is 2

Identify the output of the below program

 outer: for (var i=0;i<10;i++) {      
     for (let j=2;j<10;j++) {
         if (j==5) 
             break outer;
     }    
 }
 console.log(i);

a.1

b.0

c.error

d.11

e.5

Answer:b

Reason:The var variable has global scope