uniapp implements how to use animation library to achieve page transition effect

uniapp implements how to use the animation library to achieve page transition effects

With the development of mobile applications, users' demand for page transition effects is also getting higher and higher. As a cross-platform mobile development framework, uniapp provides a rich animation library that can help developers achieve various cool page transition effects. This article will introduce how to use the animation library to achieve page transition effects in uniapp, and provide specific code examples.

There are two main ways to use animation libraries in uniapp, one is to use the built-in animation library, and the other is to use a third-party animation library. No matter which method is used, the first thing we need to do is introduce the animation library.

1. Introduction of built-in animation libraries
   uniapp has built-in some commonly used animation libraries, such as animate.css and ani.js. These animation libraries provide various predefined animation effects that we can use directly in the page.

First, introduce the animation library you need to use in the vue file of the page, taking animate.css as an example:

import "animate.css";

Then, add the corresponding animation library to the element that needs to be animated. class, for example, the following code implements a fade animation:

<template>
  <view class="fade">Hello, world!</view>
</template>

<style>
.fade {
  animation: fade 1s;
}

@keyframes fade {
  0% { opacity: 1; }
  100% { opacity: 0; }
}
</style>

In this way, the elements on the page will gradually change from fully visible to fully transparent within 1 second.

2. Use third-party animation libraries
   In addition to the built-in animation library, uniapp also supports the use of third-party animation libraries, such as Velocity.js and tween.js. These animation libraries provide more animation effects and customization capabilities.

First, we need to install the corresponding animation library in the project, taking Velocity.js as an example:

npm install velocity-animate

Then, introduce Velocity into the page vue file that needs to use animation. js, and mount the animation library to this object:

import Velocity from 'velocity-animate';

export default {
  mounted() {
    this.Velocity = Velocity;
  },
  methods: {
    animateElement() {
      this.Velocity(this.$refs.element, {opacity: 0}, {duration: 1000});
    }
  }
}

In the above code, we mount the Velocity.js library to this object, and obtain the animation that needs to be used through the node reference $refs Elements.

Finally, we can trigger the corresponding animation effect by calling this.Velocity function. For example, the following code implements a fade animation:

<template>
  <view ref="element">Hello, world!</view>
</template>

<script>
export default {
  methods: {
    animateElement() {
      this.Velocity(this.$refs.element, {opacity: 0}, {duration: 1000});
    }
  }
}
</script>

In this way, when the animateElement method is called, the elements on the page will gradually change from fully visible to fully transparent within 1 second.

Summary
The above is how to use the animation library to achieve page transition effects in uniapp. Whether using the built-in animation library or a third-party animation library, it can help us achieve a variety of cool page transition effects. I hope the content of this article can be helpful to everyone in achieving page transition effects in uniapp development.

Code examples have been provided, and you can modify and use them according to actual needs. I wish you all the best in uniapp development!

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