How to add fade effect to Vue routing

As web applications become more complex, front-end frameworks are increasingly used. Vue.js is one of the most popular JavaScript frameworks currently. Its routing function allows users to jump smoothly in the application. This article will introduce you how to add fade effects to Vue routing to improve user experience.

Vue routing basics

Before we start, we need to understand some basic knowledge of Vue routing. Vue.js routing is implemented through Vue Router. After installing Vue Router in the project and introducing it, we can set up the routing table and routing view. The mapping relationship between access paths and corresponding components is defined in the routing table. In the routing view, the corresponding component will be matched according to the path and rendered on the page.

Add fade effect

In some cases, we need to add some visual effects to the jump page to improve the user experience. One of the commonly used effects is the fade. Through the fade effect, users can jump to pages more naturally.

We can use Vue's transition effect to achieve this fade-in and fade-out effect. Transitions are described in the Vue.js documentation as "adding transitions when inserting/removing elements". Vue provides a variety of transition effects, including fade in and fade out, scaling, rotation, etc. In this article, we will focus on the implementation of the fade effect.

1. Create CSS animation

First, we need to create CSS animation. The advantage of using CSS animation is that the code is simple and easy to maintain, and there is no need to rely on third-party libraries or plug-ins. In CSS, we can add transition effects to elements through the transition attribute. In this example, we will add a fade effect to the routing view.

.fade-enter-active, .fade-leave-active {
  transition: opacity 0.5s;
}
.fade-enter, .fade-leave-to {
  opacity: 0;
}

In this CSS, we have added transition properties for the deep and fade states of the element. First, the transition effect time is set to 0.5s (that is, the duration of the element's fade-in and fade-out effect), and then different settings are made for the two states when entering and leaving. For the entering state, we set the default opacity to 0, which represents a transparent fade-in effect; for the leaving state, we set the opacity to 0, which represents a transparent fade-out effect.

2. Add class to the routing view

In the routing view, we will use the built-in component to define the fade effect. We can use CSS selectors to set the class name for to apply styles in CSS.

<template>
  <transition>
    <router-view></router-view>
  </transition>
</template>

<style>
.fade-enter-active, .fade-leave-active {
  transition: opacity 0.5s;
}
.fade-enter, .fade-leave-to {
  opacity: 0;
}
</style>

In the above code, we define a transition component to wrap the routing view. The name attribute specifies the name of the component, here we name it fade. The mode attribute specifies the mode when entering and leaving. Here we set it to out-in, indicating the mode of leaving first and then entering. Finally, in the CSS, we added the corresponding class name to add the fade effect to the .

Conclusion

In this article, we provide a simple implementation method of Vue routing jump fade effect. By using Vue's built-in component and CSS animation, we can easily add fade effects to Vue routes to improve user experience. I hope this article is helpful to you and can add some new ideas to your Vue development.

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