vue3.0 404 倒计时自动跳转返回首页

 1、template：

<template>
    <div class="error-container">
        <div class="error-content">
            <el-row :gutter="24">
                <el-col :xs="24" :sm="24" :md="12" :lg="12" :xl="12">
                    <div class="pic-error">
                        <img alt="401" class="pic-error-parent" src="../assets/error_images/404.png"/>
                        <img alt="401" class="pic-error-child left" src="../assets/error_images/cloud.png"/>
                        <img alt="401" class="pic-error-child mid" src="../assets/error_images/cloud.png"/>
                        <img alt="401" class="pic-error-child right" src="../assets/error_images/cloud.png"/>
                    </div>
                </el-col>
                <el-col :xs="24" :sm="24" :md="12" :lg="12" :xl="12">
                    <div class="bullshit">
                        <div class="bullshit-oops">{{ oops }}</div>
                        <div class="bullshit-headline">{{ headline }}</div>
                        <div class="bullshit-info">{{ info }}</div>
                        <a class="bullshit-return-home" href="#/index">{{ jumpTime }}s&nbsp;{{ btn }}</a>
                    </div>
                </el-col>
            </el-row>
        </div>
    </div>
</template>

2、script：

<script>
    import { defineComponent, onMounted, onBeforeUnmount, ref, reactive } from 'vue'
    import {useRouter} from 'vue-router';
    export default defineComponent ({
        name: 'Page404',
        setup() {
            const router = useRouter();
            const timer = ref(0);
            const jumpTime = ref(5);
            const oops = ref('抱歉!');
            const headline = ref('当前页面不存在...');
            const info = ref('请检查您输入的网址是否正确，或点击下面的按钮返回首页。');
            const btn = ref('返回首页');
            const timeChange = () => {
                let timer = null;
                timer = setInterval(() => {
                    if (jumpTime.value > 0) {
                        jumpTime.value --;
                    } else {
                        router.push("/");
                        // router.push({path:'/home', query:{id:'12' }})
                        clearInterval(timer);
                    }
                }, 1000)
            };
            onMounted(() => {
                timeChange();
            });
            onBeforeUnmount(() => {
                clearInterval(timer);
            });
            return {
                jumpTime,
                oops,
                headline,
                info,
                btn,
                timer,
            }
        },
    })
</script>

3、style：

<style>
    body{
        background: #f6f8f9;
    }
    .error-container {
        position: absolute;
        top: 40%;
        left: 50%;
        transform: translate(-50%, -50%);
        text-align: left;
    }
    .error-container .bullshit {
        position: relative;
        float: left;
         300px;
        padding: 30px 0;
        overflow: hidden;
    }
    @keyframes slideUp {
        0% {
            opacity: 0;
            transform: translateY(60px);
        }
        100% {
            opacity: 1;
            transform: translateY(0);
        }
    }
    .error-container .bullshit-oops {
        margin-bottom: 20px;
        font-size: 32px;
        font-weight: bold;
        line-height: 40px;
        color: #409EFF;
        /* opacity: 0; */
        animation-name: slideUp;
        animation-duration: 0.5s;
        animation-fill-mode: forwards;
    }

    .error-container .bullshit-headline {
        margin-bottom: 10px;
        font-size: 20px;
        font-weight: bold;
        line-height: 24px;
        color: #222;
        /* opacity: 0; */
        animation-name: slideUp;
        animation-duration: 0.5s;
        animation-delay: 0.1s;
        animation-fill-mode: forwards;
    }

    .error-container .bullshit-info {
        margin-bottom: 30px;
        font-size: 13px;
        line-height: 21px;
        /* color: #41b584; */
        /* opacity: 0; */
        animation-name: slideUp;
        animation-duration: 0.5s;
        animation-delay: 0.2s;
        animation-fill-mode: forwards;
    }

    .error-container .bullshit-return-home {
        display: block;
        float: left;
         110px;
        height: 36px;
        font-size: 14px;
        line-height: 36px;
        color: #fff;
        text-align: center;
        cursor: pointer;
        background: #409EFF;
        border-radius: 100px;
        /* opacity: 0; */
        animation-name: slideUp;
        animation-duration: 0.5s;
        animation-delay: 0.3s;
        animation-fill-mode: forwards;
        text-decoration: none;
    }
    .error-content .pic-error {
        position: relative;
        float: left;
         120%;
        overflow: hidden;
    }
    .error-content .pic-error-parent {
         100%;
    }
    .error-content .pic-error-child {
        position: absolute;
    }
    .error-content .pic-error-child.left {
        top: 0;
        left: 40px;
         80px;
        opacity: 0;
        animation-name: cloudLeft;
        animation-duration: 2s;
        animation-timing-function: linear;
        animation-delay: 1s;
        animation-fill-mode: forwards;
    }
    @keyframes cloudLeft {
        0% {
            top: 17px;
            left: 220px;
            opacity: 0;
        }
        20% {
            top: 33px;
            left: 188px;
            opacity: 1;
        }
        80% {
            top: 81px;
            left: 92px;
            opacity: 1;
        }
        100% {
            top: 97px;
            left: 60px;
            opacity: 0;
        }
    }
    .error-content .pic-error .mid {
        top: 0;
        left: 200px;
         46px;
        opacity: 0;
        animation-name: cloudMid;
        animation-duration: 2s;
        animation-timing-function: linear;
        animation-delay: 1.2s;
        animation-fill-mode: forwards;
    }
    @keyframes cloudMid {
        0% {
            top: 10px;
            left: 420px;
            opacity: 0;
        }
        20% {
            top: 40px;
            left: 360px;
            opacity: 1;
        }
        70% {
            top: 130px;
            left: 180px;
            opacity: 1;
        }
        100% {
            top: 160px;
            left: 120px;
            opacity: 0;
        }
    }
    .error-content .pic-error .right {
        top: 80px;
        left: 250px;
         62px;
        opacity: 0;
        animation-name: cloudRight;
        animation-duration: 2s;
        animation-timing-function: linear;
        animation-delay: 1s;
        animation-fill-mode: forwards;
    }
    @keyframes cloudRight {
        0% {
            top: 100px;
            left: 500px;
            opacity: 0;
        }
        20% {
            top: 120px;
            left: 460px;
            opacity: 1;
        }
        80% {
            top: 180px;
            left: 340px;
            opacity: 1;
        }
        100% {
            top: 200px;
            left: 300px;
            opacity: 0;
        }
    }
</style>