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Answers Web-Development-Applications Real Questions, Well Web-Development-Applications Prep

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WGU Web Development Applications Sample Questions (Q64-Q69):

NEW QUESTION # 64
Given the following code:
Var a = ''true'';
What is the data type of d?

A. Undefined
B. Boolean
C. Object
D. String

Respuesta: D

Explicación:
The data type of the variable a is determined by the value assigned to it. In JavaScript, if a value is enclosed in double or single quotes, it is treated as a string.
* Variable Assignment:
* Given the code:
var a = "true";
* The value "true" is enclosed in double quotes, making it a string.
* Explanation:
* Option A: Boolean is incorrect because the value "true" is a string, not a boolean.
* Option B: String is correct because the value is enclosed in double quotes.
* Option C: Object is incorrect because the value is a primitive string.
* Option D: Undefined is incorrect because the variable a is assigned a value.
* References:
* MDN Web Docs - JavaScript Data Types
* W3Schools - JavaScript Data Types

NEW QUESTION # 65
Given the following markup and no style sheet:

Which control does the input element render?

A. Slider
B. Drop-down
C. Text
D. Button

Respuesta: A

Explicación:
The type="range" attribute in an <input> element renders a slider control.
* HTML Input Type range:
* Purpose: The range type is used for input fields that should contain a value from a range of numbers.
* Example:
* Given the HTML:
<input id="range" name="range" type="range">
* Explanation:
* This will render as a slider that the user can move to select a value within a range.
* References:
* MDN Web Docs - <input type="range">
* W3Schools - HTML Input Range

NEW QUESTION # 66
What does a form field default to if the type attribute is omitted from a form?

A. Date
B. Range
C. number
D. Text

Respuesta: D

Explicación:
If the type attribute is omitted from an <input> element, it defaults to text.
* HTML Input Default Type:
* Default Type: The default value for the type attribute in an <input> element is text.
* Example:
* Given the HTML:
<input>
* This will render as a text input field.
* References:
* MDN Web Docs - <input>
* W3Schools - HTML Input Types

NEW QUESTION # 67
Which feature was introduced in HTML5?

A. Adherence to strict XML syntax rules
B. Addition of CSS in the HTML file
C. Native drag-and-drop capability
D. Ability to hyperlink to multiple web pages

Respuesta: C

Explicación:
HTML5 introduced several new features that enhanced web development capabilities significantly. One of the notable features is the native drag-and-drop capability.
* Native Drag-and-Drop Capability:
* Description: HTML5 allows developers to create drag-and-drop interfaces natively using the draggable attribute and the DragEvent interface. This means elements can be dragged and dropped within a web page without requiring external JavaScript libraries.
* Implementation:
* Making an Element Draggable: To make an element draggable, you set the draggable attribute to true:
<div id="drag1" draggable="true">Drag me!</div>
* Handling Drag Events: You use event listeners for drag events such as dragstart, dragover, and drop:
document.getElementById("drag1").addEventListener("dragstart", function(event) { event.dataTransfer.setData("text", event.target.id);
});
document.getElementById("dropzone").addEventListener("dragover", function(event) { event.preventDefault();
});
document.getElementById("dropzone").addEventListener("drop", function(event) { event.preventDefault(); var data = event.dataTransfer.getData("text"); event.target.appendChild(document.getElementById(data));
});
* Example: This example demonstrates a simple drag-and-drop operation:
html
Copy code
<div id="drag1" draggable="true">Drag me!</div>
<div id="dropzone" style="width: 200px; height: 200px; border: 1px solid black;">Drop here</div>
* References:
* W3C HTML5 Specification - Drag and Drop
* MDN Web Docs - HTML Drag and Drop API
* HTML5 Doctor - Drag and Drop
HTML5's native drag-and-drop feature streamlines the process of creating interactive web applications by eliminating the need for third-party libraries, thus making it a powerful addition to the HTML standard.

NEW QUESTION # 68
Which code segment contains a conditional expression?

Respuesta: D

Explicación:
A conditional expression in JavaScript is an expression that evaluates to a boolean value and controls the execution flow based on its result. The conditional (ternary) operator ? : is used for conditional expressions.
* Example Analysis:
* Option A:
var result = dataCount;
* This is a simple assignment, not a conditional expression.
* Option B:
var result = count++ > 10;
* This is a comparison but not a complete conditional expression.
* Option C:
var result = dataCount++ * 1000 == 3000000;
* This is an arithmetic operation followed by a comparison but not a complete conditional expression.
* Option D:
javascript
Copy code
var result = count >= 10 ? "Done" : getResult();
* This is a conditional (ternary) expression. If count is greater than or equal to 10, result will be "Done", otherwise, it will call getResult().
* References:
* MDN Web Docs - Conditional (ternary) operator
* W3Schools - JavaScript Conditions

NEW QUESTION # 69
......

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