首页path:'/'

倒计时结束后要清除计时器，防止内存泄漏：

if (this.count === 0) {clearInterval(this.timer);
}

<!-- ErrorJump.vue -->
<template><h2>Error：找不到页面！</h2><h4>{{ count }}S后<RouterLink to="/">跳回首页</RouterLink></h4>
</template><script>
export default {data() {return {count: 0,timer: null,};},mounted() {this.count = 3;this.timer = setInterval(() => {this.count--;if (this.count === 0) {clearInterval(this.timer);this.$router.push("/");}}, 1000);},
};
</script>