如何使用Vue实现网页滚动特效

npm install vue vue-router

import Vue from 'vue'
import VueRouter from 'vue-router'
import App from './App.vue'

Vue.use(VueRouter)

const routes = [
  { path: '/', component: Home },
  { path: '/about', component: About },
  { path: '/contact', component: Contact }
]

const router = new VueRouter({
  mode: 'history',
  routes
})

new Vue({
  router,
  render: h => h(App)
}).$mount('#app')

<template>
  <div class="scroll-animation-container">
    <div :class="{ animate: isScrolling }" ref="animateEl"></div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      isScrolling: false
    }
  },
  mounted() {
    window.addEventListener('scroll', this.handleScroll)
  },
  methods: {
    handleScroll() {
      const animateEl = this.$refs.animateEl
      const offsetTop = animateEl.offsetTop
      const windowHeight = window.innerHeight
      const scrollTop = window.scrollY

      if (scrollTop > offsetTop - windowHeight) {
        this.isScrolling = true
      } else {
        this.isScrolling = false
      }
    }
  },
  beforeDestroy() {
    window.removeEventListener('scroll', this.handleScroll)
  }
}
</script>

<style>
.scroll-animation-container {
  width: 100%;
  height: 300px;
  background-color: #f2f2f2;
}

.animate {
  width: 100%;
  height: 300px;
  background-color: #ff9900;
  opacity: 0;
  transition: opacity 0.5s;
}

.animate.isScrolling {
  opacity: 1;
}
</style>

<template>
  <div id="app">
    <router-link to="/">Home</router-link>
    <router-link to="/about">About</router-link>
    <router-link to="/contact">Contact</router-link>

    <router-view></router-view>

    <scroll-animation></scroll-animation>
  </div>
</template>

<script>
import ScrollAnimation from './components/ScrollAnimation.vue'

export default {
  components: {
    ScrollAnimation
  }
}
</script>

<style>
#app {
  text-align: center;
  padding-top: 60px;
}
</style>

npm run serve