Quiz WGU - Web-Development-Applications - Efficient WGU Web Development Applications Practice Exam Online

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WGU Web Development Applications Sample Questions (Q54-Q59):

NEW QUESTION # 54
Which characters are used to enclose multiple statement in a function?

A. Semicotons
B. Curly braces
C. Parentheses
D. Spaces

Answer: B

Explanation:
In JavaScript, curly braces {} are used to enclose multiple statements in a function, defining the block of code to be executed.
* Curly Braces: Curly braces {} are used to group multiple statements into a single block. This is necessary for defining the body of a function, loops, conditional statements, and other control structures.
* Usage Example:
function greet(name) {
let greeting = "Hello, " + name;
console.log(greeting);
}
In this example, the curly braces enclose the statements that form the body of the greet function.
References:
* MDN Web Docs on Functions
* ECMAScript Language Specification

NEW QUESTION # 55
Which method allows the end user to enter text as an answer to a question as the page loads?

A. Write
B. Confirm
C. Prompt
D. alert

Answer: C

Explanation:
The prompt method in JavaScript displays a dialog box that prompts the user for input, allowing the end user to enter text as an answer to a question when the page loads.
* prompt Method: The prompt method displays a dialog box with an optional message prompting the user to input some text. It returns the text entered by the user or null if the user cancels the dialog.
* Usage Example:
let userInput = prompt("Please enter your name:", "Harry Potter");
console.log(userInput);
In this example, a prompt dialog asks the user to enter their name, and the entered text is logged to the console.
References:
* MDN Web Docs on prompt
* W3C HTML Specification on Dialogs

NEW QUESTION # 56
Given the following javaScript code:

Which code segment calls the method?

A. Obj,sayHello;
B. Window,sayhello();

Answer: A

Explanation:
To call the sayHello method in the given JavaScript object, you need to use the object's name followed by the method name with parentheses.
* Correct Method Call:
* Given the object definition:
var obj = {
sayHello: function() {
alert("Hello");
}
};
* To call the method sayHello on the object obj:
obj.sayHello();
* Explanation:
* Option A: Obj.sayHello; is incorrect syntax. The correct syntax is obj.sayHello();.
* Option B: Window.sayHello(); is incorrect because the method is defined in the obj object, not the window object.
* References:
* MDN Web Docs - Functions
* W3Schools - JavaScript Objects

NEW QUESTION # 57
Given the following CSS statement:

Which code segment changes the font color when the viewport is 800 pixels wide or wider?

Answer: A

Explanation:
To change the font color when the viewport is 800 pixels wide or wider, a media query with min-width:
800px is used. This ensures that the styles inside the media query are applied only when the viewport width is at least 800 pixels.
* CSS Media Queries:
* Syntax for Media Query:
@media screen and (min-width: 800px) {
body {
color: black;
}
}
* Explanation: The min-width: 800px condition ensures that the styles are applied when the viewport is 800 pixels or wider.
* Example Analysis:
* Option A:
@media screen and (min-width: 800px) {
body {
color: black;
}
}
* Correct. This applies the color: black; style to the body when the viewport is 800 pixels or wider.
* Option B:
@media min-width: 800px {
body {
color: black;
}
}
* Incorrect. Missing screen and which is required for a proper media query targeting screens.
* Option C:
@media screen and (max-width: 800px) {
body {
color: black;
}
}
* Incorrect. This applies the style when the viewport is 800 pixels or narrower.
* Option D:
@media max-width: 800px {
body {
color: black;
}
}
* Incorrect. This applies the style when the viewport is 800 pixels or narrower.
* References:
* MDN Web Docs - Using media queries
* W3Schools - CSS Media Queries
The correct use of media queries ensures that the specified styles are applied only under the desired conditions, providing a responsive design.

NEW QUESTION # 58
Which layout design is easiest to manage on a variety of devices?

A. Flow
B. Table
C. Grid
D. Border

Answer: C

Explanation:
A grid layout is easiest to manage across a variety of devices due to its flexibility and ability to create responsive designs that adapt to different screen sizes.
* Grid Layout:
* Responsive Design: Grid layouts can be easily adjusted using media queries to provide a consistent user experience across devices.
* CSS Grid Example:
container {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}
* Other Options:
* A. Flow: Often used for text, not layout.
* B. Table: Outdated and not responsive.
* D. Border: Not commonly used for complex layouts.
* References:
* MDN Web Docs - CSS Grid Layout
* W3Schools - CSS Grid Layout

NEW QUESTION # 59
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