css3实现动态滚动播放列表功能

需要自动滚动循环播放的列表，使用纯CSS实现基础循环功能

   .messages
        animation-name carousel
        animation-timing-function linear
        animation-iteration-count infinite
        .message-item
            cursor pointer
            margin-top 10px
        .stopPlay
            animation-play-state paused
            /**
              CSS3 animation-play-state 属性 值为paused时暂停动画，为running时继续动画
             */
    @keyframes carousel {
        0% {
            transform: translateY(0%)
        }
        100% {
            transform: translateY(-50%)
        }
    }

完整代码

template
    div
        div class="top-line"
            div class="box-title"
                span class="title"XXXX专题图/span
            /div
        /div
        div class="scroll-box"
            ul class="messages" @mouseover="stopAnim" @mouseout="runAnim" v-if="list.length"
                :style="{ animationDuration: animationDuration }" :class="{ stopPlay: animationPlayState }"
                li class="message-item" v-for="(item, index) in list" :key="index" @click="toDetail(item)"
                    div class="message-top"
                        span class="message-title"{{ item.name }}/span
                        span class="message-time"{{ item.startDate }}/span
                    /div
                    p class="message-content"{{ item.content }}/p
                /li
            /ul
            div class="none" v-else
                暂无内容
            /div
        /div
    /div
/template

script
import test11List from '@/assets/test11List'
export default {
    data() {
        return {
            animationDuration: '',
            animationPlayState: false,
            list: test11List.list,
            category: ''
        };
    },
    mounted() {
        this.getData()
    },
    methods: {
        getData() {
            let data = this.list
            if (data.length = 2) {
                this.animationPlayState = true
                this.animationDuration = 2 + 's'//动画持续时间
            } else {
                // 跑马灯动画
                this.animationDuration = data.length * 2 + 's'
                this.list = this.list.concat(this.list)
            }
        },
        stopAnim() {//鼠标移入暂停动画
            this.animationPlayState = true
        },
        runAnim() {//鼠标移除继续动画
            if (this.list.length  2) {
                this.animationPlayState = false
            }
        }
    },
};
/script

style lang="stylus" scoped
    *{
        margin: 0
        padding: 0
    }
    ul{
        list-style: none
    }
    .scroll-box{
        width 100%
        height 800px
        overflow hidden
        border 2px solid red
    }
    .box-title
        line-height 34px
        font-size 16px
        background: blue
        color: #fff
        opacity 1
    .messages
        animation-name carousel
        animation-timing-function linear
        animation-iteration-count infinite
        .message-item
            cursor pointer
            margin-top 10px
        .stopPlay
            animation-play-state paused
            /**
              CSS3 animation-play-state 属性 值为paused时暂停动画，为running时继续动画
             */
    .none
        text-align center
        line-height 537px
        color #fff
    @keyframes carousel {
        0% {
            transform: translateY(0%)
        }
        100% {
            transform: translateY(-50%)
        }
    }
/style

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