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The transition component in Vue3: Implementing component transition effects
Vue3 is a brand-new version recently launched, which has made many improvements in performance and development experience. At the same time, Vue3 also provides more features and functions, one of the important functions is the transition component. In Vue3, the transition component can be used to implement the transition effect of components, thereby making the UI richer and more vivid.
What is the transition component?
In Vue3, the transition component is a very useful component, which can be used to add transition effects to components. In layman's terms, there will be some animation effects when components appear and disappear. This animation effect can be fade in and fade out, zoom in and out, etc., which is very practical.
Use transition component to achieve transition effect
To use transition component to achieve component transition effect, we need to master some basic knowledge points first. The first is the basic use of transition components. The following is a code example of basic usage:
<template> <transition name="fade"> <div v-if="show">我是一个div组件</div> </transition> <button @click="toggleShow">切换组件</button> </template> <script> export default { data() { return { show: true }; }, methods: { toggleShow() { this.show = !this.show; } } } </script> <style> .fade-enter-active, .fade-leave-active { transition: opacity .5s; } .fade-enter, .fade-leave-to{ opacity:0; } </style>
In the above code, we first define a transition component, and then define a div component in the transition component. This div component will only be displayed when show is true. The following is an explanation of the code:
CSS class name of transition component
In the above code we used the class names "fade-enter", "fade-leave-to", "fade-enter- active", and "fade-leave-active". These class names are built-in to the transition component, but we need to set their prefix according to the name attribute of the transition. When Vue detects the entry or exit of an element, it will add the following class names in sequence:
We can define the initial, intermediate, and final states of the transition effect for the component based on these class names.
Summary
In Vue3, the transition component is the basic component used to achieve component transition effects. It allows us to add some rich visual effects to components, thereby improving the user's interactive experience. When using the transition component, we need to first master the basic usage methods and related CSS class names, so that we can take advantage of it in actual projects.
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