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| Section | Weight | Objectives |
|---|---|---|
| Application Lifecycle Management | 20% | - Stages of application lifecycle
|
| JavaScript Coding | 15% | - Event handling
|
| Forms | 20% | - Form elements and markup
|
| Graphics and Animation | 25% | - Canvas element usage
|
| Layouts | 20% | - CSS layout and positioning
|
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13. Frage
Which two code segments declare a JavaScript method? Choose 2.
Antwort: A,B
Begründung:
The correct selections are C and D because both declare a function as a property of an object, which is the defining characteristic of a JavaScript method. MDN describes a method as a function associated with an object, or more specifically, an object property whose value is a function. In option C, Score: function() { ... } is object-literal syntax. It defines a property named Score whose value is an executable function, so that property behaves as a method of the object. In option D, this.Score = function() { ... } assigns a function to the Score property of the current object instance. MDN notes that this is commonly used inside object methods to refer to the object the method is attached to. Option B does not declare a method; it calls Score() and assigns the return value. Option A is only an incomplete or ordinary variable declaration and does not create a function-valued object property. References/topics: JavaScript objects, custom classes, methods, function expressions, this.
14. Frage
You have created custom error messages for a form. When a user attempts to submit the form with invalid data, the data must remain in the form and error messages must be displayed. Which Event property or method should you use?
Antwort: A
Begründung:
The correct method is preventDefault(). During form submission, the browser's default behavior is to submit the form to the target URL, which may navigate away from the current page or reload it. If the submitted data is invalid and the application must display custom error messages while preserving the entered values, the submit event handler should call event.preventDefault(). This cancels the default submit action, allowing the page to remain in place and the script to display validation feedback next to the relevant form controls.
defaultPrevented is not the method to use; it is only a Boolean property that indicates whether preventDefault() has already been called. cancelable is also only informational; it tells whether the event's default behavior can be canceled. abort is unrelated to form validation and does not provide the required control over form submission. References/topics: HTML5 form validation, custom validation messages, submit event, event cancellation, preserving form data.
15. Frage
You are given the design for an app. The project manager asks you to outline the steps you must take to release and maintain the app.
Move each step from the list on the left to its correct sequence in the application lifecycle on the right.
Note: You will receive partial credit for each correct response.
Antwort:
Begründung:
Explanation:
Determine requirements # Develop code # Test the app
#
Monitor performance # Deploy the app
The correct application lifecycle sequence begins with Determine requirements because the team must first define what the app must accomplish, who will use it, and which functional and technical expectations must be satisfied. Since the question states that the design is already provided, the next implementation step is Develop code, where the HTML, CSS, JavaScript, assets, APIs, and app logic are created according to the approved design and requirements. After development, the app must be validated through Test the app.
Testing confirms that the app works correctly, meets requirements, handles user input properly, and does not contain functional defects that would block release. Once testing is complete, the app can be released through Deploy the app, which publishes it to the target environment or makes it available to users. The final operational stage is Monitor performance, where the released app is observed, maintained, updated, and improved based on performance, reliability, defects, and user behavior. References/topics: application lifecycle management, requirements, development, testing, deployment, maintenance.
16. Frage
You need to create the layout shown, which defines five content areas:
* Logo and page title
* Menu
* Main content area
* Additional content area
* Copyright and contact information
You define the following classes:
Antwort: B
Begründung:
The correct answer is D because the layout shown is a named-area CSS Grid layout. The mockup contains five semantic regions: the top header area for the logo and page title, a left-side menu, a central main content area, a right-side additional content area, and a bottom copyright/contact area. In CSS Grid, this type of visual structure is defined with grid-template-areas, where each quoted string represents one grid row and each repeated name represents how far that area spans across columns. In option D, heading spans the full top row, menu occupies the left column across the lower rows, content fills the main center region, right fills the additional content region, and contact spans the bottom row to the right of the menu. Option A only defines row and column sizes and does not name the five content areas. Options B and C are invalid for this purpose because named layout strings do not belong in grid-template-rows or grid-template-columns. References
/topics: CSS Grid, grid containers, display: grid, named grid areas, grid-template-areas, page layout construction.
17. Frage
You are drawing on the canvas defined by the white square.
At which x, y coordinate is the upper-left corner of the filled square?
Antwort: D
Begründung:
The correct coordinate is 50,50. In an HTML5 canvas, the coordinate system begins at the upper-left corner of the canvas. The x-coordinate increases as you move to the right, and the y-coordinate increases as you move downward. Therefore, 0,0 represents the top-left corner of the entire white canvas area. In the displayed image, the filled black square is not positioned at the top-left edge, top-center, or left-center of the canvas.
Instead, its upper-left corner is offset both horizontally and vertically from the origin. Among the available choices, 50,50 is the only coordinate that moves the square 50 units to the right and 50 units down from the canvas origin. This matches the visual placement of the filled square inside the white canvas. Option A would place the square at the canvas origin. Option B would place it along the left side, halfway down. Option C would place it along the top edge, halfway across. References/topics: HTML5 canvas coordinate system, x/y positioning, drawing rectangles, fillRect(x, y, width, height).
18. Frage
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