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The role of setup function in vue

The role of setup function in vue

The setup function is used in Vue.js to separate the component's logic from the rendering process. The separated component logic is easier to reuse, organize, and test. It also supports the Composition API, providing a more flexible and modular way to organize component logic.

May 02, 2024 pm 10:42 PM
vue
What does vm mean in vue

What does vm mean in vue

vm in Vue represents the Vue instance object, which manages the virtual DOM (Virtual DOM), a lightweight representation used to track the actual DOM. Vue instances use vm variables to operate, including accessing data (vm.$data), updating data (vm.$set() and vm.$delete()), accessing methods (vm.$methods) and binding events (vm .$on() and vm.$off()). Understanding what vm means is crucial to working effectively in a Vue application.

May 02, 2024 pm 10:42 PM
vue
What does ref mean in vue

What does ref mean in vue

The ref directive in Vue is used to obtain a reference to an element or component. It can access DOM elements or component instances to operate or control them. Usage: Use the ref directive, such as <div ref="myElement"></div>; access the reference through this.$refs, such as this.$refs.myElement returns the DOM element, and this.$refs.myComponent returns the component instance. Scenarios include: direct access to DOM elements, interacting with subcomponents, form input binding, and creating custom directives.

May 02, 2024 pm 10:42 PM
vue
The difference between ref and data in vue

The difference between ref and data in vue

In Vue.js, ref is used to reference DOM elements or component instances, while data is used to manage component state. ref is only valid in the component template, read-only and cannot be modified; data is valid in the entire component and can be modified. Best practice is to use data to manage component state and refs to access the DOM or interactive components.

May 02, 2024 pm 10:39 PM
vue 作用域
The difference between ref and props in vue

The difference between ref and props in vue

The difference between ref and props in Vue: ref is a method that points to a component instance and can be used to dynamically operate the component; props is a property used to receive data from the parent component.

May 02, 2024 pm 10:39 PM
vue
How to reference other components in vue

How to reference other components in vue

In Vue, ways to reference other components include using <component> tags, slots, scoped slots, events, and refs.

May 02, 2024 pm 10:39 PM
vue 作用域
What tags are used to define dynamic components in vue

What tags are used to define dynamic components in vue

Use the <component> tag in Vue.js to dynamically render components. Specify the component name through the :is attribute, which can be a string, object, or function.

May 02, 2024 pm 10:36 PM
vue
What is dom in vue

What is dom in vue

The DOM is a hierarchical data model for HTML and XML documents that allows JavaScript to manipulate web page content. In Vue, the DOM is represented by a virtual DOM (VDOM), a lightweight data structure that tracks DOM differences and updates only the changed parts, improving performance. Vue provides a variety of DOM manipulation APIs, including el, ref, $el, $refs, v-bind, and v-on, for accessing, manipulating, and binding DOM elements.

May 02, 2024 pm 10:36 PM
vue
Where does this in vue point to?

Where does this in vue point to?

The point of this in Vue depends on the context, usually pointing to the component instance (within the component), Vue instance (non-component context). Specific situations include: html templates, component methods, non-component functions, event handling functions, watch options, etc.

May 02, 2024 pm 10:36 PM
vue
Can the table in vue still change after receiving data?

Can the table in vue still change after receiving data?

Yes, the data received by Table in Vue can change. 1. Initialize the data source; 2. Bind the data source to the Table; 3. Update the data source; 4. Make sure the data source is a responsive object; 5. Use the this.$set() method to update the data source; 6. If the data If the source is an array, use the Array.push() or Array.splice() method.

May 02, 2024 pm 10:33 PM
vue
Who does this in vue point to?

Who does this in vue point to?

In Vue, the point of this depends on its context: In the root instance: Points to the Vue instance itself Within the method: Points to the Vue instance to which the method belongs Inside the computed property: Points to the Vue instance to which the getter function belongs Inside the event handler: Points to the event that triggers the event Inside the DOM element template: points to the Vue instance to which the getter function belongs

May 02, 2024 pm 10:33 PM
vue 作用域
Can jquery be used in vue?

Can jquery be used in vue?

Yes, you can use jQuery with Vue. Vue’s progressive nature allows developers to use functionality on demand, including integration with other libraries. jQuery can be installed into a component by installing a global plugin or manually. Note that jQuery is primarily intended as a helper tool and should be used to avoid naming conflicts and code redundancy when used within the Vue ecosystem. Best practice is to only use jQuery when needed, and prioritize tools that come with Vue or third-party plugins.

May 02, 2024 pm 10:33 PM
vue 作用域
This.$get in vue can receive several attributes

This.$get in vue can receive several attributes

The this.$get method in Vue.js has two properties: path: required property path (string or array). defaultValue: optional, the default value returned if the attribute does not exist.

May 02, 2024 pm 10:31 PM
vue
What happens when v-if and v-for are combined in vue?

What happens when v-if and v-for are combined in vue?

When the v-if and v-for instructions are used at the same time: 1. v-if takes precedence. If it is false, the element will not be rendered; 2. If v-if is true, the element will be rendered iteratively according to v-for. Example: v-if checks item.visible, v-for iterates items, and only renders item.name when item.visible is true.

May 02, 2024 pm 10:30 PM
vue

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