Web-Development-Applications Exam Dumps - WGU Web Development Applications (KVO1)

The placeholder attribute in an <input> element displays help text in the input field without specifying an actual value for the input. This text disappears when the user starts typing.

Placeholder Attribute: This attribute provides a hint to the user about what type of information is expected in the field.

Usage Example:

<input type="text" placeholder="Enter your name">

The input field will show "Enter your name" as help text.

References:

MDN Web Docs on placeholder

W3C HTML Specification on Input Placeholder

Padding is the CSS property used to create space between the content of an element and its border. It is an internal spacing within the element.

CSS Box Model:

Content: The innermost part, where text and images appear.

Padding: The space between the content and the border.

Border: The edge of the element.

Margin: The space outside the border, creating space between different elements.

Usage:

Padding:

div {

padding: 20px;

}

This code adds 20 pixels of padding on all sides of the content within the div element.

References:

MDN Web Docs - Padding

W3C CSS Box Model

The perspective(n) method in CSS is used to affect the distance between the z-plane and the user, effectively changing the perspective depth of a 3D transformed element.

perspective(n) Method: The perspective function defines how far the element is from the user. It affects the appearance of the 3D transformed element, giving it a sense of depth.

Usage Example:

container {

perspective: 1000px;

}

In this example, the perspective is set to 1000 pixels, which defines the distance between the z-plane and the user.

Properties:

n: This represents the perspective distance. The lower the value, the more pronounced the perspective effect.

References:

MDN Web Docs on perspective

W3C CSS Transforms Module Level 1

Bootstrap is a popular front-end framework that assists designers in creating adaptive and responsive page layouts easily.

Bootstrap:

Responsive Design: Bootstrap provides a responsive grid system, pre-styled components, and utilities that help in designing adaptive layouts.

Example:

Other Options:

A. Modernize: Not a framework, but a JavaScript library to detect HTML5 and CSS3 features.

C. React: A JavaScript library for building user interfaces, not specifically for layout.

D. Knockout: A JavaScript library for implementing MVVM pattern, not specifically for layout.

References:

Bootstrap Documentation

MDN Web Docs - Responsive design

These answers ensure accurate and comprehensive explanations for the given questions, supporting efficient learning and understanding.

To apply CSS only to the first line of a particular HTML element, the ID selector #Welcome should be used as per the given HTML structure.

CSS ID Selector: The ID selector is used to style the element with a specific id.

Usage Example:

#Welcome {

color: red;

}

In this example, the #Welcome selector will apply the red color style only to the element with id="Welcome".

References:

MDN Web Docs on ID Selectors

W3C CSS Specification on Selectors

To ensure that there is one pixel of space between the image and the surrounding elements, the margin property should be used.

CSS Margin Property: The margin property is used to create space around elements, outside of any defined borders.

Usage Example:

img {

margin: 1px;

}

In this example, the margin: 1px; rule sets a margin of 1 pixel around the image, creating the desired space.

References:

MDN Web Docs on Margin

W3C CSS Specification on Margin

Given the code segment:

var a = "8";

var b = "6";

var c = a + b;

console.log(c);

This code concatenates two strings.

Explanation:

var a = "8";: Variable a is assigned the string "8".

var b = "6";: Variable b is assigned the string "6".

var c = a + b;: The + operator concatenates the two strings, resulting in "86".

console.log(c);: Outputs the value of c to the console.

Output:

The console displays "86" because it concatenates the two string values.

References:

MDN Web Docs - String

W3Schools - JavaScript String

The translateX(n) method in CSS is used to move an element horizontally on the 2-D plane by a specified distance. This transformation repositions the element along the X-axis.

translateX(n) Method: The translateX(n) function moves an element horizontally by n units. Positive values move the element to the right, while negative values move it to the left.

Usage Example:

element {

transform: translateX(100px);

}

In this example, the element is moved 100 pixels to the right.

Properties:

n: This represents the distance to move the element. It can be specified in various units such as pixels (px), percentages (%), ems (em), etc.

References:

MDN Web Docs on transform

W3C CSS Transforms Module Level 1