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How does the "colspan" attribute affect the structure of a table?

  • It adjusts the border color of a cell. 
  • It allows a cell to span multiple columns. 
  • It allows a cell to span multiple rows. 
  • It sets the padding inside a cell. 
The "colspan" attribute in HTML is used to allow a table cell to span across multiple columns. It is useful when you want a single cell to extend horizontally over more than one column, such as for headings that should cover several columns beneath them. 
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In terms of accessibility, how do screen readers interpret lists?

  • They announce the list, provide its length, and then read the list items. 
  • They convert lists into paragraphs. 
  • They read only the first item in a list. 
  • They skip over lists without reading them. 
Screen readers aim to provide an accessible experience for visually impaired users. When a screen reader encounters a list, it typically announces the presence of the list, indicates how many items are in the list, and then proceeds to read each item. This approach allows users to understand the structure and content of the web page in a comprehensible manner. 
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You are developing a table that contains a summary of complex data, and users have requested an option to view more details when needed. How could you utilize HTML and CSS to facilitate this while maintaining clean and user-friendly design?

  • Create a nested table for details within the main table. 
  • Use CSS hover to show details when hovering over summary rows. 
  • Use JavaScript to toggle between summary and detailed views. 
  • Utilize the
    and

    HTML elements for collapsible content. 
The

and

elements in HTML are specifically designed for displaying and hiding information. Users can click on the

content to view the additional details contained within the

tag. This approach keeps the design clean and provides an intuitive mechanism for users to access more information on demand. 
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Inline elements do not respect the _______ property.

  • background-image 
  • color 
  • font-size 
  • margin 
Inline elements do not respect all the sides of the margin property, specifically margin-top and margin-bottom. They will only respect margin-left and margin-right. This means that while you can push an inline element left or right using margins, you cannot effectively push elements above or below it. 
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How does the "disabled" attribute affect options within a select list?

  • It changes the color of the options. 
  • It prevents those options from being sent to the server. 
  • It makes the options invisible. 
  • It makes the options unselectable by the user. 
The "disabled" attribute, when applied to an option within a select list, renders that option unselectable by the user. While the option remains visible within the dropdown list, it is greyed out (in most browsers) and cannot be chosen. This is particularly useful when you want to show an option as being present but not currently available for selection. 
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You noticed that using target="_blank" for external links redirects users but may pose a security risk. How can you mitigate this risk while maintaining the functionality?

  • Add a JavaScript onclick event. 
  • Remove the target attribute altogether. 
  • Use only internal links. 
  • Use rel="noopener noreferrer" with the anchor tag. 
When using target="_blank", the new page can potentially gain access to the window object of the original page through the window.opener property, posing a potential security risk. Adding rel="noopener noreferrer" to the anchor tag prevents this behavior, protecting users from any potential security vulnerabilities. 
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How is the blockquote element commonly displayed in browsers by default?

  • Centered 
  • In italics 
  • Underlined 
  • With indentations on both sides 
The blockquote element is typically displayed with indentations on both the left and right margins by most browsers. This visual distinction serves to set the block quote apart from the surrounding content, signifying that the text inside is a quotation. 
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In a documentation webpage, users should be able to click on the items in the Table of Contents, leading them to the respective section smoothly. How can you accomplish this?

To create smooth in-page navigation, you can use the method, where the href attribute points to an ID of an element on the page. When users click on this link, the browser will scroll smoothly to the element with the corresponding ID. 
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The ______ property can be used to retrieve the index of the selected option using JavaScript.

  • selectedIndex 
  • chosenIndex 
  • optionIndex 
  • activeChoice 
In JavaScript, the selectedIndex property of a