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| Section | Objectives |
|---|---|
| CSS Styling | - Selectors and styling rules
|
| JavaScript Programming | - DOM manipulation
|
| HTML Fundamentals | - Forms and input elements
|
| Web Application Development Concepts | - Media and APIs
|
INF-306試験の質問は、当社の製品を使用して試験を準備し、夢の証明書を取得できると信じています。より良い求人を希望する場合は、適切なプロ品質を備えなければならないことを私たちは皆知っています。私たちのINF-306学習教材はあなたのそばにいて気配りのあるサービスを提供する用意があります、そして私たちのINF-306学習教材はすべてのお客様に心からお勧めします。想像できる。 INF-306トレーニングガイドには多くの利点があります。
質問 # 64
You define the following layout:
< !DOCTYPE html >
< html >
< head >
< style >
section {
display: flex;
align-items: center;
flex-wrap: wrap;
min-height: 200px;
width: 700px;
background: linen;
}
section p {
flex: 1;
min-width: 200px;
padding: 20px;
}
< /style >
< /head >
< body >
< h2 > Exhibits to visit at the zoo < /h2 >
< section >
< p style= " order: 3 " > Lions < /p >
< p style= " order: 4 " > Tigers < /p >
< p style= " order: 2 " > Bears < /p >
< p style= " order: 1 " > Zoo Trip < /p >
< /section >
< /body >
< /html >
For each statement about the markup shown on the left, select True or False.
正解：
解説：
Explanation:
The paragraph containing the text Tigers will display first.
False
The section p CSS refers to the parent flexbox container.
False
When the paragraphs have a width less than 200px, the last paragraph will wrap to the next line.
True
The parent flexbox container is the section element because it has display: flex;. The paragraphs inside the section become flex items. The display order is controlled by each paragraph's inline order value, and flex items are laid out from the lowest order value to the highest. Therefore, Zoo Trip with order: 1 displays first, followed by Bears, Lions, and finally Tigers; the statement that Tigers displays first is false. The selector section p does not refer to the parent flexbox container. It targets paragraph elements inside a section, meaning it styles the flex items, not the flex container. The container itself is targeted by the section rule. The final statement is true in intent because flex-wrap: wrap; allows flex items to move to a new line when they cannot fit in the available row. Since each paragraph has min-width: 200px, items are prevented from shrinking below that minimum and wrapping occurs when available space is insufficient. References/topics:
CSS flexbox, flex container, flex items, order, flex-wrap, min-width.
質問 # 65
You need to complete the code for a registration form that must meet the following criteria:
* The Password must be 6-8 characters long and use only letters and numbers.
* The Member ID must follow the pattern ###-##-###.
Complete the markup by selecting the correct option from each drop-down list.
Note: You will receive partial credit for each correct selection.
正解：
解説：
Explanation:
First drop-down: maxlength=8
Second drop-down: pattern=[A-Za-z0-9]{6,8}
Third drop-down: pattern=[0-9]{3}-[0-9] {2}-[0-9]{3}
The password field needs two constraints. maxlength=8 limits the user to a maximum of eight characters, satisfying the upper length requirement. The pattern=[A-Za-z0-9]{6,8} attribute enforces the complete password rule: only uppercase letters, lowercase letters, and digits are allowed, and the total length must be between six and eight characters. A pattern without {6,8} would not enforce the minimum length, and {1,8} would incorrectly allow passwords shorter than six characters. The Member ID field must follow the visible placeholder format 123-45-678, which is three digits, a hyphen, two digits, another hyphen, and three digits.
Therefore, the correct member ID pattern is pattern=[0-9] {3}-[0-9]{2}-[0-9] {3}. The hyphens must be included literally in the pattern because the required format contains them. max=8 is not appropriate for password text length, and size=8 only controls display width, not validation.
質問 # 66
Which two CSS segments are valid filter properties? Choose 2.
正解：A、C
解説：
The valid filter declarations are filter: opacity(25%) and filter: drop-shadow(16px 16px 16px red). The CSS filter property applies graphical effects to an element, commonly including image rendering effects such as blur, contrast, color shifts, transparency, and shadows. opacity(25%) is a valid filter function because filter opacity accepts a percentage or number to control the rendered transparency of the element. drop-shadow (16px 16px 16px red) is also valid because drop-shadow() is a CSS filter function, and MDN shows that it accepts two or three length values plus an optional color. box-shadow(...) is invalid in this context because box-shadow is a standalone CSS property, not a filter function; MDN explicitly distinguishes drop-shadow() from the box-shadow property. blur(25deg) is invalid because blur uses a length value such as pixels, not an angular value such as degrees. References/topics: CSS filter property, image effects, opacity filter, drop- shadow filter, valid filter-function syntax.
質問 # 67
Match each property to its corresponding value for creating the CSS flexible box layout.
Move each property from the list on the left to the correct value on the right.
Note: You will receive partial credit for each correct match.
正解：
解説：
Explanation:
A CSS flexible box layout is created by applying the display property to a container with either flex or inline- flex. This establishes the element as a flex container and causes its child elements to become flex items. The flex-direction property defines the direction of the main axis and accepts row, row-reverse, column, and column-reverse, allowing items to flow horizontally, vertically, or in reverse order. The align-items property controls how flex items are aligned along the cross axis, with values such as flex-start, flex-end, and center.
The direction property controls writing direction and accepts ltr for left-to-right text flow or rtl for right-to-left text flow. Finally, order is applied to individual flex items and accepts an integer value, represented here as
"any," because any numeric order value can be used to rearrange item display order without changing the document source order. References/topics: CSS flexbox, flex containers, flex items, main axis, cross-axis alignment, writing direction, item ordering.
質問 # 68
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?
正解：D
解説：
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.
質問 # 69
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