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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: JavaScript Coding | 15% | - APIs and state management
|
| Topic 2: Application Lifecycle Management | 20% | - Stages of application lifecycle
|
| Topic 3: Forms | 20% | - Form elements and markup
|
| Topic 4: Graphics and Animation | 25% | - Styling and transformations
|
| Topic 5: Layouts | 20% | - CSS layout and positioning
|
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NEW QUESTION # 68
A local photographer asks you to add filters as shown to the images in their photo gallery so that the images are not recognizable until authorized users log in.
Example of original and filtered images:
* Original image: full-color flower image
* Filtered image: blurred grayscale image
Analyze the images on the left.
Construct a CSS selector that will apply the appropriate filters to the images to meet the requirements.
Complete the markup by moving the appropriate HTML tags from the list on the left to the correct locations on the right. You may use each HTML tag once, more than once, or not at all.
Note: There is more than one correct markup. You will receive credit for any correct markup completion.
Answer:
Explanation:
Explanation:
First blank: img
Second blank: filter:
Third blank: grayscale(100%)
Fourth blank: blur(8px)
The correct CSS selector is img because the requirement applies the visual effect to gallery images. The correct property is filter:, not transform:, because CSS filters modify the rendered appearance of an element using image-processing effects such as blur, grayscale, opacity, brightness, contrast, and shadows. The filtered sample appears blurred and colorless, so the appropriate filter functions are grayscale(100%) and blur (8px). grayscale(100%) removes all color from the image, converting it to a black-and-white rendering. blur (8px) obscures visual details, making the image difficult to recognize until the protected or authorized state changes the styling. The filter keyword without a colon is not a valid CSS declaration in this context.
brightness(40%) and opacity(50%) could further obscure an image, but they are not required to reproduce the shown filtered result. The final declaration is therefore filter: grayscale(100%) blur(8px);.
NEW QUESTION # 69
The ctx variable is the context of an HTML5 canvas object. What does the following HTML markup draw?
ctx.arc(x, y, r, 0, Math.PI, true);
Answer: B
Explanation:
The statement draws a semicircle at the specified point. The arc() method of the Canvas 2D API adds a circular arc to the current path. Its core parameters are the center point x, y, the radius, the starting angle, the ending angle, and an optional direction flag. In this expression, x and y define the center of the arc, and r defines its radius. The start angle is 0 radians, and the end angle is Math.PI radians. Since Math.PI represents
180 degrees, the path covers exactly half of a full circle. The final argument, true, tells the canvas context to draw the arc counterclockwise rather than using the default clockwise direction; however, the angular span remains half of the circumference. The call does not draw a complete visible shape unless the path is later stroked or filled, but the geometric path being created is a semicircular arc. It is not a straight line, square, or full circle. References/topics: Canvas 2D context, arc() method, radians, path construction, drawing arcs and circles.
NEW QUESTION # 70
You need to ensure that the value of an input element is a valid 10-digit phone number with no symbols. The input element should initially display all zeroes, but that value should never be stored with the form.
Complete the markup by selecting the correct option from each drop-down list.
Answer:
Explanation:
Explanation:
< input id= " phone "
pattern= " [0-9]{10} "
placeholder= " 0000000000 " >
The correct first attribute is pattern because the requirement is to validate the entered value against a specific format: exactly ten numeric digits and no symbols. The regular expression [0-9]{10} means that only digits from 0 through 9 are allowed, and exactly ten of them must be entered. This prevents values such as 123-456-
7890, (123)4567890, or 123 456 7890 because those contain symbols or spaces. The correct second attribute is placeholder, not value, because the input should initially display all zeroes but that displayed text must not be submitted or stored with the form. A placeholder is hint text shown when the field is empty; it disappears when the user enters real data and is not submitted as the control's value. By contrast, value= " 0000000000 " would actually prepopulate the input and could be submitted if the user did not change it. The required option is not selected because the question focuses on format validation and display hint behavior, not mandatory completion. References/topics: HTML5 form validation, pattern, regular expressions, placeholder, input constraint validation.
NEW QUESTION # 71
You are creating a dietary request form for an upcoming conference. The form must include the following elements:
* The title " Conference Registration Form "
* A Name input field for the attendee ' s name
* A list of food options the attendee can select by using the mouse or typing Complete the code by moving the appropriate code segments from the list on the left to the correct locations on the right. You may use each code segment once, more than once, or not at all.
Note: You will receive partial credit for each correct response.
Answer:
Explanation:
Explanation:
< !DOCTYPE html >
< html >
< body >
< h1 > The Fitness World Around Us - Spring Conference < /h1 >
< form action= " process.php " method= " post " >
< legend > Conference Registration Form < /legend >
< p > < label for= " name " > Name: < /label >
< input type= " text " id= " name " size= " 30 " maxlength= " 30 " value= " " / > < /p >
< input id= " food " placeholder= " Cuisine " list= " food-choice " size= " 40 " / > < br >
< datalist id= " food-choice " >
< option value= " Vegetarian " > Vegetarian < /option >
< option value= " Traditional " > Traditional < /option >
< option value= " Surprise Me " selected > Surprise Me < /option >
< /datalist >
< input type= " submit " >
< /form >
< /body >
< /html >
The correct solution must satisfy all three stated form requirements. The title " Conference Registration Form
" is supplied by the < legend > element in the first valid code segment. That same segment also includes the required attendee name field by using a < label > associated with an < input type= " text " > . The for= " name
" and id= " name " relationship makes the label programmatically connected to the input, which is the correct HTML form-accessibility pattern. For the food options, the correct choice is the segment that uses an < input
> element with a list attribute connected to a < datalist > element. This is required because the attendee must be able to select an option by using the mouse or type a value manually. A < select > element provides a fixed dropdown list, and radio buttons provide fixed clickable choices, but neither is the best match for a type-ahead list requirement. The < datalist > element supplies predefined options such as Vegetarian, Traditional, and Surprise Me while still allowing keyboard entry through the associated input field. References/topics: HTML5 forms, labels, text inputs, datalist, form usability, selectable and typed input options.
NEW QUESTION # 72
You are creating the styling for your webpage. Which two CSS attributes produce a scroll bar if your content overflows its element? Choose 2.
Answer: B,D
Explanation:
The correct values are scroll and auto. The CSS overflow property controls what happens when content is too large to fit inside an element's box. MDN describes overflow as setting the desired behavior when content does not fit inside the element's padding box. The value overflow: scroll creates a scroll container and displays scrollbars so overflowing content can be reached, even when the scrollbar may not be strictly needed in some rendering environments. The value overflow: auto also creates scrolling behavior when content overflows, but it is conditional: scrollbars appear only when the content exceeds the available box size. hidden is incorrect because it clips overflowing content and hides the excess rather than exposing it through a scrollbar. visible is also incorrect because it allows overflow to render outside the element box and does not create a scroll container. Therefore, when the question asks which settings produce a scrollbar if content overflows, the precise answers are scroll and auto. References/topics: CSS overflow, scroll containers, overflow clipping, automatic scrollbars, layout flow.
NEW QUESTION # 73
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