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- The principle of scoped in vue
- The scoped property in Vue limits CSS styles to components by appending unique class names to avoid accidental interference. It uses a Sass/Less preprocessor to convert scoped styles into CSS with unique class names, enabling CSS style isolation, reusability, and clarity. But it may slightly reduce performance, and the style can only be applied to elements within the component. It is recommended to use scoped when a component has a unique visual style, needs to prevent style conflicts, or creates reusable components.
- Vue.js 487 2024-05-02 21:09:19
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- The role of scope in vue
- The scope attribute in Vue is used to limit the visible range of data and methods in child components to prevent naming conflicts with parent components, thereby improving the readability, maintainability and performance of the code, but it also limits the availability of data and methods, increasing It reduces the communication difficulty between parent and child components.
- Vue.js 479 2024-05-02 21:06:50
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- The difference between hash and history in vue
- The difference between hash and history modes in Vue routing is: URL format: hash uses the # prefix, and history uses the regular path. Browser processing: hash is only processed by the browser and will not be sent to the server; history uses the history API and will send a request to cause the page to be reloaded. Advantages and Disadvantages: Hash has good browser compatibility and does not require server-side configuration, but the URL is not beautiful; history URL is beautiful and can use back-end routing and server-side rendering, but requires server-side configuration.
- Vue.js 964 2024-05-02 21:06:33
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- What does the custom directive in vue start with?
- In Vue, custom directives start with the v- prefix to distinguish them from native Vue directives. They allow developers to extend Vue's functionality and create reusable directives to handle specific tasks.
- Vue.js 857 2024-05-02 21:06:16
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- How to use v-for in vue
- The v-for directive is used to iterate over an array or object and render child components or templates for each element. Its syntax is <div v-for="item in items">, where item is the alias for each element and items is the array or object to be iterated over. v-for can render lists, tables and other structures. In order to track child components when elements are updated or rearranged, each child component needs to be assigned a unique key. Range variables such as index, $index, first, last, even and odd can be accessed in the v-for loop, but range variables can only be used in templates, not in JavaScript
- Vue.js 770 2024-05-02 21:03:52
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- How to write a normal loop in vue
- Ordinary loops in Vue.js use the v-for instruction to traverse arrays or objects and create elements: Syntax: v-for="item in items", where items is the object to be traversed and item is the loop item. Example: Traverse the ['apple', 'banana', 'cherry'] array and generate a <li> list. In addition, you can also traverse { apple: 'red', banana: 'yellow', cherry: 'black' } objects. Special attributes: :key is used to specify a unique key, :index contains the index of the loop item. Loops can be nested to
- Vue.js 471 2024-05-02 21:03:33
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- The difference between created and mounted in vue
- The difference between created and mounted in Vue lies in execution time and data access capabilities: created: called when the component is initialized. It can only access Vue instance data and cannot interact with the DOM. mounted: Called after DOM is mounted. It can access Vue instance data and DOM elements and interact with DOM.
- Vue.js 730 2024-05-02 21:03:15
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- How to use slot in vue
- Slots in Vue.js simplify application development by rendering specific content at different locations in a component. There are three types of slots: named slots, default slots, and scoped slots. The benefits of slots include code reuse, flexibility, and scalability. In the example, the parent component defines Slot, and the child component uses Slot to present different content.
- Vue.js 572 2024-05-02 21:01:06
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- The role of created in vue
- The created hook in Vue is called after the Vue instance is created and before the DOM is mounted. It is mainly used to perform tasks related to data processing, state initialization and dependency retrieval, avoiding heavy operations after DOM mounting.
- Vue.js 595 2024-05-02 21:00:48
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- How to use filters in vue
- Vue.js filters can be used to transform or format data for custom display in templates. Global filters are available throughout the application, while local filters are available only within components or templates. Filters can be applied using the pipe symbol (|) followed by the filter name and arguments, which are passed in colons (:), and multiple filters can be chained to apply multiple transformations.
- Vue.js 506 2024-05-02 21:00:33
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- How to loop through an object in vue
- To loop through an object in Vue, you can use the v-for directive, whose syntax is: v-for="item in object". Each property value can be rendered by accessing the object's properties (dot notation or square bracket notation) and bound to the object properties using the v-bind directive.
- Vue.js 813 2024-05-02 20:57:27
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- Can variables be added within require brackets in Vue?
- Variables can be added within require brackets in Vue. This allows components to be loaded dynamically based on variable values, increasing code flexibility and promoting code reuse. Make sure the variable points to the correct module path.
- Vue.js 994 2024-05-02 20:57:13
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- What does disabled mean in vue
- In Vue.js, the disabled attribute determines whether a form element is disabled, causing the element to be grayed out, uneditable, unable to interact or submit data. It can be applied to input boxes, text areas, select boxes, radio/check buttons, and buttons to prevent users from editing or submitting specific fields, limit interaction, or create dynamic forms.
- Vue.js 961 2024-05-02 20:54:56
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- The role of ref in vue
- ref is used in Vue.js to get a reference to a component or DOM element, establishing a connection from the Vue instance to the component or DOM element, allowing direct access and manipulation. Usage of ref includes: Directly accessing components or DOM elements Communicating with subcomponents Manipulating the DOM outside the template
- Vue.js 1104 2024-05-02 20:54:40
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- The role of refs in vue
- Refs in Vue are used to access DOM elements or component instances through JavaScript, providing direct DOM access, intra-component interaction and form validation capabilities. When using it, be careful to avoid usage within templates, performance impact, and avoid frozen objects. Other scenarios include event handling, component communication, and asynchronous requests.
- Vue.js 833 2024-05-02 20:54:19
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