Modern Web Design with HTML5, CSS3, and JavaScript - Getting Random Items from Arrays

Modern Web Design with HTML5, CSS3, and JavaScript - Getting Random Items from Arrays

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

This tutorial guides you through generating a random value from an array in JavaScript. It covers creating an array, selecting elements, and writing a function to return random items. The video also demonstrates testing the function, outputting results, and enhancing the output by including index values. Finally, it shows how to display the output on a webpage using HTML.

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7 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the first step in generating a random value from an array?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

How do you create an array in JavaScript?

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

What method is used to select an element in the DOM to update its content?

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

Explain how to generate a random index for an array.

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the purpose of the Math.floor and Math.random methods in this context?

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6.

OPEN ENDED QUESTION

3 mins • 1 pt

How can you return both the item and its index from the array?

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7.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the final output method used to display the random messages on the page?

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