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Bootstrap uses ___ to convey the importance and hierarchy of the content to screen readers.

  • role
  • aria-label
  • aria-hidden
  • aria-describedby
Bootstrap utilizes the aria-label attribute to communicate the significance and structure of content to screen readers. This attribute helps in creating accessible and meaningful user interfaces.
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How would you modify the appearance of all Tooltips in a Bootstrap application to match a specific design theme?

  • Create a custom CSS file and override the default Bootstrap Tooltip styles.
  • Update the global Bootstrap theme setting for tooltips using the 'data-theme' attribute.
  • Modify the Bootstrap stylesheet directly to customize Tooltip styles.
  • Use the 'tooltip-theme' class on the parent element and style accordingly.
To customize the appearance of all Tooltips in a Bootstrap application, create a custom CSS file and override the default Bootstrap Tooltip styles. This allows you to match the tooltips with a specific design theme without directly modifying the Bootstrap stylesheet.
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Which tool is commonly used for evaluating the performance of a website?

  • Google PageSpeed Insights
  • Adobe Photoshop
  • Microsoft Word
  • Visual Studio Code
Google PageSpeed Insights is a widely used tool for assessing website performance. It provides recommendations to enhance speed and user experience, making it a valuable resource for developers and site owners.
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What is the recommended method for overriding Bootstrap's default CSS styles?

  • Use custom CSS files with higher specificity
  • Modify Bootstrap's source code
  • Inline styles within HTML elements
  • Use the !important declaration
When customizing Bootstrap styles, it's often recommended to use custom CSS files with higher specificity. This allows your styles to take precedence over Bootstrap's defaults without modifying the source code or relying on !important.
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Discuss the impact of jQuery's .on() method on the event handling of Bootstrap components.

  • Enhancing event delegation in Bootstrap components using the .on() method.
  • Overriding default event handling behavior of Bootstrap components with .on() method.
  • Triggering custom events in Bootstrap components through the use of .on() method.
  • Managing event listeners efficiently by utilizing .on() method for Bootstrap components.
The .on() method in jQuery has a significant impact on the event handling of Bootstrap components. It efficiently manages event listeners, providing a flexible way to enhance event delegation and handle events in a more controlled manner. The .on() method is not about overriding default behavior or triggering custom events; instead, it is about managing event listeners effectively for Bootstrap components. The correct understanding is that .on() enhances event handling in Bootstrap components.
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Bootstrap's ___ class provides visual and accessible feedback to users about the state of a component.

  • alert
  • visually-hidden
  • sr-only
  • status
The sr-only class in Bootstrap is designed to provide visually hidden but screen-reader accessible feedback to users, making it useful for conveying the state of a component.
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The jQuery selector $('___').collapse() can be used to programmatically control Bootstrap collapsible elements.

  • '.collapse'
  • '.collapsible'
  • '.expand'
  • '.toggle'
The correct selector is $('.collapse').collapse(). This line of code initializes or toggles the collapse plugin for the selected elements.
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How do you detect when a Bootstrap carousel slide transition ends?

  • $('#myCarousel').on('slid.bs.carousel')
  • $('#myCarousel').on('transitionend.bs.carousel')
  • $('#myCarousel').on('ended.bs.carousel')
  • $('#myCarousel').on('slideend.bs.carousel')
To detect when a Bootstrap carousel slide transition ends, you should use $('#myCarousel').on('slid.bs.carousel'). This event is triggered after the carousel has completed the transition to a new slide, allowing you to perform actions at that point.
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When customizing Bootstrap with Sass, what is the significance of the !default flag in variable declarations?

  • Indicates a variable that can be overridden
  • Specifies a variable as a constant
  • Flags a variable for global scope
  • Marks a variable for conditional compilation
In Sass, the !default flag is used to indicate that a variable's value should only be assigned if the variable is not already defined. This allows for customization without overwriting existing values.
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Bootstrap's ___ feature can be leveraged to add interactive functionality to custom components.

  • JavaScript
  • jQuery
  • AJAX
  • TypeScript
Bootstrap's JavaScript feature can be used to add interactivity to custom components, making "JavaScript" the correct option.
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