今日の社会では、能力を高めるために証明書を取得することを優先する人がますます増えています。まったく新しい観点から、INF-306学習資料は、INF-306認定の取得を目指すほとんどのオフィスワーカーに役立つように設計されています。当社のINF-306テストガイドは、現代の人材開発に歩調を合わせ、すべての学習者を社会のニーズに適合させます。 INF-306の最新の質問が、関連する知識の蓄積と能力強化のための最初の選択肢になることは間違いありません。
| Section | Weight | Objectives |
|---|---|---|
| JavaScript Coding | 15% | - APIs and state management
|
| Layouts | 20% | - CSS layout and positioning
|
| Application Lifecycle Management | 20% | - Testing and debugging
|
| Forms | 20% | - Input validation
|
| Graphics and Animation | 25% | - Styling and transformations
|
最短時間でINF-306試験に合格すると、Jpshikenすべての受験者の声になります。 しかし、圧倒的な学習教材で最も価値のある情報を選択する方法は、すべての試験官にとって頭痛の種です。 絶え間ない努力の後、INF-306学習ガイドは誰もが期待するものです。 当社の専門家は、コンテンツを簡素化し、お客様の重要なポイントを把握するだけでなく、INF-306準備資料を簡単な言語に再コンパイルしました。レジャー学習体験と、今後のINF-306 試験HTML5 Application Development合格できます。
質問 # 59
You are creating a form that requires the category to be entered as a two- or three-letter abbreviation. The input is mandatory.
You need to configure the input validation for the form.
Complete the markup by typing into the boxes.
Note: You will receive partial credit for each correct answer.
正解：
解説：
minlength , maxlength , required
Explanation:
First box: minlength
Second box: maxlength
Third box: required
The correct validation attributes are minlength, maxlength, and required. The input must accept a category abbreviation that is either two or three characters long. The minlength= " 2 " attribute enforces the lower boundary by preventing submission when the entered text contains fewer than two characters. The maxlength= " 3 " attribute enforces the upper boundary by preventing the user from entering more than three characters into the field. Since the question states that the input is mandatory, the required attribute must also be included. required is a Boolean validation attribute, so it does not need a value; its presence alone makes the field required before the form can be submitted. Together, these attributes configure basic HTML5 constraint validation directly in markup without requiring JavaScript. The completed input therefore requires a value, rejects values shorter than two characters, and limits the value to no more than three characters.
References/topics: HTML5 form validation, minlength, maxlength, required, text input constraints, mandatory form fields.
質問 # 60
You need to contain overflowing text inside the element ' s border without creating unneeded scrollbars or losing text. Which attribute setting should you use?
正解：D
解説：
The correct setting is overflow: auto;. The requirement is precise: the text must remain inside the element's border, must not be lost, and scrollbars should not appear unless they are needed. overflow: auto satisfies all three requirements because it clips overflowing content to the element's box and creates scrollbars only when the content actually exceeds the available space. This preserves access to all text while avoiding unnecessary horizontal or vertical scrollbars when the content fits. overflow: hidden is incorrect because it clips the overflowing text and provides no scrolling mechanism, meaning some content may become inaccessible.
overflow: visible is incorrect because the extra text can flow outside the element boundary, violating the requirement to keep content inside the border. overflow: scroll is close but not optimal because it forces scrollbars even when they are not required, which directly conflicts with the instruction to avoid unneeded scrollbars. References/topics: CSS overflow, scroll containers, text containment, content clipping, layout flow.
質問 # 61
You need to correctly apply a style rule for screen devices with a width of 480 pixels or less.
Complete the code by selecting the correct option from the drop-down list.
正解：
解説：
Explanation:
@media screen and (max-width: 480px) {
/* style rules go here */
}
The correct media query is @media screen and (max-width: 480px) {. The requirement says the style rule must apply to screen devices with a width of 480 pixels or less. In CSS media queries, screen identifies the media type, and (max-width: 480px) defines the upper viewport-width limit. This means the enclosed CSS rules apply when the viewport is 480 pixels wide or any smaller value, which is the standard mobile breakpoint behavior. @media screen and (width: 480px) is incorrect because it applies only when the viewport is exactly 480 pixels wide, not below it. @media screen display and (width: 480px) is invalid syntax because display is not used that way in a media query. @media screen-width: 480px is also invalid because it does not follow the required @media media-type and (feature: value) pattern. References/topics: responsive design, CSS media queries, @media, screen media type, max-width, mobile breakpoint styling.
質問 # 62
Which two code segments declare a JavaScript method? Choose 2.
正解：C、D
解説：
The correct selections are B and C because both define a function as a member of an object context, which is the essential JavaScript pattern for declaring a method. MDN defines a method as a function that is a property of an object. It also shows that a function expression can be assigned to a variable or property and then invoked later. In option B, Score: function() { ... } represents an object-literal method property. This pattern is commonly used when defining custom objects, prototypes, configuration objects, or class-like structures in JavaScript. In option C, this.Score = function() { ... } assigns a function to the current object instance, creating an instance method that can be called through that object. Option A does not declare a method; as written, it is only an invalid or incomplete variable assignment and does not use the function keyword or method syntax.
Option D invokes Score() and assigns its return value to a; it calls a function rather than declaring a method.
References/topics: JavaScript custom classes, object members, function expressions, object-literal methods, instance methods.
質問 # 63
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：A
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 # 64
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