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- What are the hook functions in vue
- Hook functions in Vue allow developers to perform custom tasks during the component life cycle. The main hook functions include: life cycle hooks (beforeCreate, created, beforeMount, mounted, beforeUpdate, updated, beforeDestroy, destroyed) other hooks (errorCaptured, renderTracked, renderTriggered, activated, deactivated)
- Vue.js 212 2024-05-08 17:15:25
- How to use mounted in vue
- The mounted hook of Vue.js is called after the component is inserted into the DOM for the first time and is used to perform: 1. AJAX requests; 2. Initialization of third-party libraries; 3. Element operations; 4. Event subscription; 5. Timer settings. Specific examples include getting data, setting event listeners, initializing jQuery, etc.
- Vue.js 1038 2024-05-08 17:09:18
- The role of $mount in vue
- The $mount() method mounts the Vue instance into the DOM element and performs the following steps: compile the template; create the element; bind data; insert into the DOM.
- Vue.js 826 2024-05-08 17:06:16
- The difference between $mount and el in vue
- $mount and el in Vue are used to render the Vue instance into the DOM. $mount is an instance method that allows mounting and remounting at any time, and el is an option to specify the mount target element when creating the instance. Once specified Cannot be changed.
- Vue.js 1028 2024-05-08 17:03:16
- Can slots in Vue be configured like methods?
- Yes, in Vue, you can configure Slots in components using the v-slot directive, just like configuring Methods. Configuration methods include: using the v-slot directive in the component to define the Slot and specify a name. Use the slot attribute in the parent component to pass content to the Slot. Slot can also receive parameters, passed in the parent component using the v-bind directive. The benefits of using slot configuration include improved code reusability, enhanced component flexibility, and simplified code structure.
- Vue.js 250 2024-05-08 16:57:18
- Method to remove event definition in vue
- How to remove event listener in Vue? Determine the elements and event types to remove. Get a reference to the event handler function. Use the removeEventListener method to remove an event listener.
- Vue.js 834 2024-05-08 16:54:16
- How to use eventbus in vue
- EventBus is a communication mechanism in Vue.js that allows non-parent-child communication between components. Usage includes: Create a global EventBus instance. Use eventBus.$emit() to trigger events. Use eventBus.$on() to listen for events. Its advantages include non-parent-child communication, loose coupling, and scalability.
- Vue.js 1094 2024-05-08 16:48:28
- EventEmit removes the defined method in vue
- There are two ways to remove event listeners in Vue: use the v-on directive: first add the listener, and then use the v-on or @ directive to set its value to null to remove it. Use the $off() method: remove the listener directly from the Vue instance, specifying the event name and handler function.
- Vue.js 466 2024-05-08 16:45:29
- The difference between event and $event in vue
- In Vue.js, event is a native JavaScript event triggered by the browser, while $event is a Vue-specific abstract event object used in Vue components. It is generally more convenient to use $event because it is formatted and enhanced to support data binding. Use event when you need to access specific functionality of the native event object.
- Vue.js 492 2024-05-08 16:42:21
- How keepalived works in vue
- KeepAlive in Vue.js works through the following steps: When first loaded, the component is instantiated and added to the cache. When activated, creates a snapshot of the component, containing the current state and DOM structure. When switching, check whether the snapshot exists in the cache, and if so, reuse it directly. When updating, listen to component state changes and update the snapshot. On reactivation, the component state is restored from the updated snapshot. When destroyed, the component snapshot and instance are destroyed.
- Vue.js 953 2024-05-08 16:39:20
- The array in Vue has changed, but the page is not rendered, what should I do?
- To solve the problem of page not rendering after changing Vue array: Make sure the array is responsive, use Vue.set() or native array method. Checks whether the array was modified via a reactive method. Use watch or computed listeners to trigger manual rendering. Use Vue.nextTick() to trigger rendering manually. Check the Virtual DOM and recreate the Vue instance.
- Vue.js 415 2024-05-08 16:36:21
- What are the modifiers in vue
- Modifiers in Vue are special symbols that fine-tune instructions. Common modifiers are listed below: .prevent: Prevents element default events. .stop: Prevents events from bubbling up to the parent element. .capture: Handles events during the capture phase. .self: Triggered only when the event occurs in the element where the directive is located. .once: The directive is unbound only after being triggered once. .passive: event handler does not block default browser actions. .native: Use the browser's native event handlers. .model: Bind the v-model directive to the event handler.
- Vue.js 339 2024-05-08 16:33:21
- Commonly used modifiers in vue
- Modifiers of Vue.js are used to modify the behavior of instructions. Commonly used modifiers include: delayed execution (.lazy), cached calculation results (.memo), forced conversion to numbers (.number), trimming spaces (.trim), and blocking Default behavior (.prevent), prevent event bubbling (.stop), execute only once (.once), trigger only on the current element (.self), trigger during the event capture phase (.capture), trigger when the element enters the DOM (.enter), triggered when the element leaves the DOM (.leave).
- Vue.js 907 2024-05-08 16:27:20
- What is vm in vue
- vm in Vue stands for Virtual DOM, which is an internal representation that tracks and manages application data, with responsiveness, variability, dirty checking, and efficiency. It consists of data, calculated properties, methods, listeners and overhead. It is created through new Vue(). It accesses and modifies data through data, methods and other attributes. It provides reactive data binding, dirty check optimization, and data change tracking. and the advantage of ease of testing.
- Vue.js 615 2024-05-08 16:24:21
- The difference between let and var in vue
- In Vue, there is a difference in scope when declaring variables between let and var: Scope: var has global scope and let has block-level scope. Block-level scope: var does not create a block-level scope, let creates a block-level scope. Redeclaration: var allows redeclaration of variables in the same scope, let does not.
- Vue.js 582 2024-05-08 16:21:19
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