Q
What does the following JavaScript code snippet do? Code: let num = 5; while (num > 0) { console.log(num); num--; }

Answer & Solution

Answer: Option B
Solution:
The code snippet uses a while loop to execute a block of code repeatedly until the condition num > 0 becomes false. It starts with num being 5 and prints the value of num to the console in each iteration, then decrements num by 1. This process continues until num becomes 0, at which point the loop stops. Therefore, the output will be: 5 4 3 2 1
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What will be the output of the following JavaScript code? Code: let i = 1; do { console.log(i); i++; } while (i < 3);

A). 1 2 3

B). 1 2 3 4

C). 2 3 4

D). Infinite loop

What will be the output of the following JavaScript code? Code: let x = 10; while (x > 0) { console.log(x); x -= 2; }

A). 10 8 6 4 2 0

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C). 8 6 4 2 0

D). 9 7 5 3 1 -1

What will be the output of the following JavaScript code? Code: let i = 0; for (; i < 3; i++) { console.log(i); }

A). 0 1 2 3

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D). 1 2 3 4

What is the purpose of the following JavaScript statement? break;

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B). Exits the current loop or switch statement

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What does the following JavaScript code snippet do? Code: let x = 5; while (x > 0) { console.log(x); x -= 1; }

A). Prints even numbers from 5 to 1

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C). Prints numbers from 5 to 0

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What is the purpose of the following JavaScript statement? let result = x > 0 ? 'Positive' : 'Non-positive';

A). Assigns the value 'Positive' to result if x is greater than 0, otherwise assigns 'Non-positive'

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What is the purpose of the following JavaScript statement? let name = 'John';

A). Declare a function

B). Declare a variable

C). Print a message to the console

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What will be the output of the following JavaScript code? Code: let x = 15; if (x > 10) { console.log('x is greater than 10'); } else { console.log('x is not greater than 10'); }

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What will be the output of the following JavaScript code? Code: for (let i = 0; i <= 3; i++) { console.log(i); }

A). 0 1 2 3

B). 0 1 2

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D). 1 2 3 4

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A). Function declaration statement

B). Assignment statement

C). Conditional statement (if statement)

D). Looping statement (for loop)