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WGU Web Development Applications Sample Questions (Q70-Q75):
NEW QUESTION # 70
Given the following JavaScript code:
What happens when this code is executed?
Answer: C
Explanation:
The provided JavaScript code sets a variable x to 6 and then assigns this value to the innerHTML of the HTML element with the id demo.
var x;
x = 6;
document.getElementById("demo").innerHTML = x;
Explanation:
* Variable Declaration: var x; declares the variable x.
* Variable Assignment: x = 6; assigns the value 6 to the variable x.
* DOM Manipulation: document.getElementById("demo").innerHTML = x; finds the element with id demo and sets its innerHTML to the value of x, which is 6.
Outcome:
* The content of the HTML element with the id demo will be changed to 6.
References:
* MDN Web Docs on getElementById
* W3C JavaScript DOM Manipulation
NEW QUESTION # 71
Which event fires when an issue occurs while an external file loads?
Answer: C
Explanation:
> "The `error` event is triggered when an error occurs during the loading of an external file such as an image, script, or style."
>
> "Events like `stalled` and `suspend` relate more to media buffering; `invalid` relates to form input validation." References:
* MDN Web Docs: GlobalEventHandlers.onerror
* HTML Standard: Error event
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Here are the fully corrected, verified, and formatted answers for Questions 37 to 40, as per your specifications:
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NEW QUESTION # 72
What is a characteristic of JavaScript code?
Answer: A
Explanation:
JavaScript is a scripting language primarily used for creating and controlling dynamic website content. Here are some characteristics:
* Runs Inside a Web Browser: JavaScript code is executed in the web browser, making it possible to create interactive and dynamic web pages.
* Cross-Browser Compatibility: JavaScript is designed to be compatible across different web browsers.
* Interpreted Language: JavaScript is interpreted, meaning it does not need to be compiled before execution.
* Accessible to Users: JavaScript code is not hidden from the user; it can be viewed in the browser's developer tools.
References:
* MDN Web Docs on JavaScript
* W3C JavaScript Introduction
NEW QUESTION # 73
What represents the value of the pattern attribute of an input element in an HTML
Answer: B
Explanation:
The value of thepatternattribute in an input element is a regular expression. This regular expression is used to define what constitutes a valid value for the input.
* Regular Expressions: Regular expressions (regex) are sequences of characters that define search patterns. They are commonly used for string matching and validation.
* Usage Example:
<input type="text" pattern="d{5}" placeholder="Enter a 5-digit number"> Here, thepatternattribute value is a regular expression that validates a five-digit number.
:
MDN Web Docs onpattern
Regular Expressions Documentation
NEW QUESTION # 74
Given the following code:
What is the value of the variable data when the code runs?
Answer: A
Explanation:
In JavaScript, assigning an empty pair of quotes to a variable creates an empty string.
* Variable Assignment:
* Given the code:
var data = "";
* The variabledatais assigned an empty string.
* Explanation:
* Option A: Null is incorrect because the variable is assigned an empty string, notnull.
* Option B: A single-character string is incorrect because the string is empty.
* Option C: Undefined is incorrect because the variable is assigned a value, even though it is an empty string.
* Option D: An empty string is correct because""represents an empty string.
:
MDN Web Docs - String
W3Schools - JavaScript Strings
NEW QUESTION # 75
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