Answered: the JavaScript source code

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

While examining a web form and the JavaScript source code for it, you notice that a function that changes the text displayed in one part of the page is being executed every time you type or delete a letter or number in a text entry field labeled “Message,” instead of when you press the Tab key to move to the next form field. You correctly guess that _____.

a. the function is being triggered when the form element labeled “Message” loses the focus

b. the function must be triggered by a change event because input events do not apply to text entry boxes

c. anonchangeevent handler has been applied to the form element labeled “Message”

d. an event listener for theinputevent is attached to the form element labeled “Message”

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