Describe the steps to create a custom loading animation in Bootstrap that activates while data is fetched from a server.
- loader, loading-animation, custom-loader, loader-animate
- loader, spinner, loading, spinner-animate
- custom-loader, loader-spin, spin, loader-animate
- spinner, loader, loading, loader-spin
To create a custom loading animation in Bootstrap for server data fetching, apply the 'spinner' class. This class, combined with 'loader' and 'loading,' ensures a visually appealing spinner animation during the data retrieval process.
For creating a collapsible content area, Bootstrap uses the ___ component.
- Collapse
- Accordion
- Modal
- Dropdown
Bootstrap's Collapse component is used to create a collapsible content area. It allows you to toggle the visibility of content with smooth animations. The Collapse component is commonly employed to create collapsible navigation bars or dropdown menus.
Q2. How would you address performance issues in a web application with heavy JavaScript usage?
- Minify and Bundle JavaScript
- Implement Server-Side Rendering (SSR)
- Optimize DOM Manipulation
- Use Asynchronous Loading
Minifying and bundling JavaScript files reduce their size, lowering the time it takes to download and execute them. This is crucial for improving the performance of web applications with heavy JavaScript usage, enhancing user experience.
The 'input-___' class in Bootstrap is used to create larger or smaller form controls.
- control-lg
- size-lg
- form-control-lg
- input-size-lg
In Bootstrap, the 'form-control-lg' class is used to create larger form controls. It is applied to the 'input' element to increase its size for better visibility and user interaction.
To optimize performance, Bootstrap's event delegation for dynamic content uses '___'.
- document.querySelectorAll
- event.preventDefault
- event delegation
- data-toggle
Bootstrap optimizes performance by utilizing event delegation for dynamic content, which is achieved through 'event delegation.' This minimizes the number of event listeners, enhancing efficiency.
In a Vue.js project, Bootstrap's classes can be overridden in the component's ___ section.
- style
- template
- script
- custom
In a Vue.js project, Bootstrap's classes can be overridden in the component's style section. This allows customization of Bootstrap styles within the Vue component, providing flexibility in the appearance of the UI.
What is the role of the 'data-toggle' attribute in Bootstrap's JavaScript components?
- It specifies the target element for a JavaScript event.
- It activates the Bootstrap carousel component.
- It toggles the visibility of a Bootstrap element.
- It triggers the Bootstrap navigation collapse.
The correct answer is 'It toggles the visibility of a Bootstrap element.' The 'data-toggle' attribute is used in Bootstrap to toggle the visibility of a specified element. It is commonly used with components like collapse, dropdown, modal, etc. When 'data-toggle' is set to a specific value (e.g., 'collapse' or 'modal'), it triggers the corresponding Bootstrap functionality, making the element visible or hidden.
What are the differences between spacing utilities like 'm-2' and 'mx-2' in Bootstrap?
- 'm-2' adds margin to all sides, 'mx-2' adds horizontal margin
- 'm-2' adds margin to the top only, 'mx-2' adds margin to both top and bottom
- 'm-2' adds margin to the left and right only, 'mx-2' adds margin to all sides
- 'm-2' adds margin evenly to all sides, 'mx-2' adds margin to the left and right
The 'm-2' class in Bootstrap adds margin evenly to the left and right sides of an element, while 'mx-2' adds margin specifically to the left and right sides. Understanding these spacing utilities is crucial for precise layout control in Bootstrap.
The ___ file is crucial for managing third-party JS library dependencies in a Bootstrap project.
- package.json
- bootstrap.js
- dependencies.json
- yarn.lock
The package.json file is crucial for managing third-party JavaScript library dependencies in a Bootstrap project. It contains information about the project and its dependencies, allowing for easy version control and package installation.
What is the difference between 'container' and 'container-fluid' classes in Bootstrap?
- 'container' is fixed-width, 'container-fluid' is full-width
- 'container' is full-width, 'container-fluid' is fixed-width
- 'container' has a transparent background, 'container-fluid' has a colored background
- 'container' is for text-only, 'container-fluid' is for images
The correct option is 'container' is fixed-width, 'container-fluid' is full-width. The 'container' class provides a fixed-width container, while 'container-fluid' spans the entire width of the viewport.