JavaScript Mastery from Zero to Hero - Prepare for Coding Interviews - Introduction to the For Loop - II

JavaScript Mastery from Zero to Hero - Prepare for Coding Interviews - Introduction to the For Loop - II

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Hard

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The video tutorial explains how to use loops in JavaScript, focusing on iteration, the incremental operator, and accessing array elements. It covers the logic within loops, how to execute them, and the importance of loop conditions. The tutorial also highlights common pitfalls, such as accessing undefined elements, and provides a practical example of listing user names from an array.

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7 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the purpose of the variable 'I' in the loop?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

Explain how the loop iterates through the array of users.

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the output when the loop runs successfully through the users array?

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

What happens when 'I' reaches the length of the users array?

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

Describe the significance of using 'less than' versus 'less than or equal to' in the loop condition.

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6.

OPEN ENDED QUESTION

3 mins • 1 pt

Why do we see 'undefined' when 'I' is set to be less than or equal to the length of the users array?

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7.

OPEN ENDED QUESTION

3 mins • 1 pt

How can you modify the loop to start counting from 1 instead of 0?

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