先总结一波

Vue封装的过度与动画

作用：在插入、更新或移除 DOM元素时，在合适的时候给元素添加样式类名。
写法：
1. 准备好样式：
  - 元素进入的样式：
    1. v-enter：进入的起点
    2. v-enter-active：进入过程中
    3. v-enter-to：进入的终点
  - 元素离开的样式：
    1. v-leave：离开的起点
    2. v-leave-active：离开过程中
    3. v-leave-to：离开的终点
2. 使用<transition>包裹要过度的元素，并配置name属性：
```
<transition name="hello">
	<h1 v-show="isShow">你好啊！</h1>
</transition>
```
3. 备注：若有多个元素需要过度，则需要使用：<transition-group>，且每个元素都要指定key值。

过渡与动画

使用传统的动画效果实现文字的的出入

<template>
    <div>
        <button @click="isShow = !isShow">显示/隐藏</button>
        <transition appear name="one">
            <h1 v-show="isShow">勇敢牛牛</h1>
        </transition>
        
    </div>
</template>

<script>
    export default {
        name:'Test',
        data() {
            return {
                isShow:true
            }
        },
    }
</script>

<style scoped>
    h1{
        background-color: orange;
    }
    .one-enter-active{
        animation: showFu 1s linear;
    }
    .one-leave-active{
        animation: showFu 1s reverse;
    }
    @keyframes showFu {
        from{
            transform: translateX(-100%);
        }
        to{
            transform: translate(0px);
        }
    }
</style>

在这里插入图片描述

vue实现过渡效果

<template>
    <div>
        <button @click="isShow = !isShow">显示/隐藏</button>
        <transition appear name="one">
            <h1 v-show="isShow">勇敢牛牛</h1>
        </transition>
        
    </div>
</template>

<script>
    export default {
        name:'Test2',
        data() {
            return {
                isShow:true
            }
        },
    }
</script>

<style scoped>
    h1{
        background-color: orange;
        transition: 0.5s linear;
    }
    /*
        *进入的起点
    */ 
    .one-enter,.one-leave-to{
        transform:translateX(-100%) ;
    }
    .one-enter-active,.one-leave-active{
        transition: 3s linear;
    }
    /*
        进入的终点
    */
    .one-enter-to, .one-leave{
        transform:translateX(0) ;
    }
   
</style>

多个元素过渡

Alt

<template>
    <div>
        <button @click="isShow = !isShow">显示/隐藏</button>
        <transition-group appear name="one">
            <h1 v-show="isShow" key="1">勇敢牛牛</h1>
            <h1 v-show="!isShow" key="2">不怕困难</h1>

        </transition-group>
        
    </div>
</template>

<script>
    export default {
        name:'Test2',
        data() {
            return {
                isShow:true
            }
        },
    }
</script>

<style scoped>
    h1{
        background-color: orange;
        /* transition: 0.3s linear; */
    }
    /*
        *进入的起点
    */ 
    .one-enter,.one-leave-to{
        transform:translateX(-100%) ;
    }
    .one-enter-active,.one-leave-active{
        transition: 0.5s linear;
    }
    /*
        进入的终点
    */
    .one-enter-to, .one-leave{
        transform:translateX(0) ;
    }
   
</style>

集成第三方动画

官网：https://animate.style/
在这里插入图片描述

<template>
    <div>
        <button @click="isShow = !isShow">显示/隐藏</button>
        <transition-group 
            appear 
            name="animate__animated animate__bounce"
            enter-active-class="animate__swing"
            leave-active-class="animate__bounceOutUp"
            >
            <h1 v-show="isShow" key="1">勇敢牛牛</h1>
            <h1 v-show="!isShow" key="2">不怕困难</h1>
        </transition-group>
        
    </div>
</template>

<script>
    import 'animate.css'
    export default {
        name:'Test3',
        data() {
            return {
                isShow:true
            }
        },
    }
</script>

<style scoped>
    h1{
        background-color: orange;
    }
   
</style>

实现Todos任务清单的动画显示

在这里插入图片描述

<template>
    <div>
        <ul class="todo-main">
           <transition-group appear name="one">
                <MyItem
                    v-for="todoObj in todos"
                    :key="todoObj.id"
                    :todo="todoObj"
                    :checkTodo="checkTodo"
                    :deleteTodo="deleteTodo"
                ></MyItem>
           </transition-group>
          

        </ul>
    </div>
</template>

<script>
import MyItem from "./MyItem.vue";
export default {
    name: "MyList",
    components: { MyItem },
    props: ["todos", "checkTodo", "deleteTodo"],
};
</script>

<style scoped>
/*main*/
.todo-main {
    margin-left: 0px;
    border: 1px solid #ddd;
    border-radius: 2px;
    padding: 0px;
}

.todo-empty {
    height: 40px;
    line-height: 40px;
    border: 1px solid #ddd;
    border-radius: 2px;
    padding-left: 5px;
    margin-top: 10px;
}
    .one-enter,.one-leave-to{
        transform:translateX(100%) ;
    }
    .one-enter-active,.one-leave-active{
        transition: 0.5s linear;
    }
    /*
        进入的终点
    */
    .one-enter-to, .one-leave{
        transform:translateX(0) ;
    }
</style>