tags provide metadata about the HTML document, like character set, viewport settings, or author information. These tags should be placed exclusively inside the section as they usually provide information to browsers or search engines about how to display or index the page, respectively.
What is the purpose of the "legend" element within a fieldset?
Difficulty level
To act as a placeholder for inputs.
To add a decorative line around the fieldset.
To provide a caption or title for the group of controls inside the fieldset.
To specify the method of form submission.
The legend element is used within a fieldset to provide a descriptive caption or title for the group of form controls contained inside that fieldset. It helps users understand the context or purpose of the information grouped together, thereby improving form usability and enhancing accessibility by providing context to users, especially those using assistive technologies.
Which tag is used to group the header content in a table?
Difficulty level
The
element is utilized in HTML tables to group together the header content in a table. It's especially useful in longer tables, as it allows browsers or other user agents to render the header distinctly (for example, keeping it visible while scrolling). Pairing this with
and
helps in structuring the table content more semantically and effectively.
The tag is used to embed images in HTML documents. The image source is defined by the src attribute. While there are other tags like andthat deal with images, especially for responsive designs, the direct way to embed an image is using the tag.
How does the hierarchy of heading tags (h1 to h6) affect web accessibility?
Difficulty level
They determine the website's load time.
They dictate the color scheme of the website.
They influence the site's mobile responsiveness.
They provide a structured document outline for screen readers and assistive technologies.
Heading tags from h1 to h6 offer a hierarchical structure to web content. Properly used, they give a clear content outline that assistive technologies like screen readers use to narrate the content effectively to users with disabilities. Ensuring a clear hierarchy aids users in understanding the content structure and navigation, making the web more accessible.
You are developing a complex multi-level navigation menu. How would you ensure that it is both keyboard-friendly and accessible to screen reader users?
Difficulty level
Assign a different tab index for each level of the menu.
Ensure each menu item has a distinct sound when highlighted.
Use aria-expanded and aria-haspopup attributes appropriately.
Use bright colors to distinguish menu levels.
ARIA (Accessible Rich Internet Applications) attributes, like aria-expanded and aria-haspopup, provide screen readers with context about the state and functionalities of UI elements. In multi-level menus, these attributes can indicate to users when sub-menus are present and whether they're currently expanded or collapsed, enhancing both keyboard and screen reader navigation.
A user reports they are unable to submit a form even though they have selected an option from the dropdown list. How would you troubleshoot and resolve this issue, considering HTML validation attributes and JavaScript validation methods?
Difficulty level
All form elements are wrapped inside a "fieldset".
Check if JavaScript is preventing form submission.
Inspect if the "select" element has a "disabled" attribute.
Use the "required" attribute on the "select" element.
A JavaScript error or a script that actively prevents form submission is a common culprit. You should inspect event listeners on the form and check for custom validation methods that may prevent the form from submitting. Ensure that there's no interference from other scripts and that no errors are thrown during validation.
What is the primary purpose of using paragraph tags in HTML?
Difficulty level
To create tables
To define a block of text as a paragraph
To emphasize text
To link to other pages
In HTML, the
tag is used to define a block of text as a paragraph. This tag provides a way to organize and structure content, ensuring that text is presented in readable chunks. Browsers automatically add some space (margin) before and after each
element for clear separation. It's a fundamental element in crafting content structure on the web.