basic_component.vue

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

<script>
  export default {
    // == Lifecycle
    mounted () {
      window.addEventListener('scroll', this.handleScroll)
    },
    destroyed () {
      window.removeEventListener('scroll', this.handleScroll)
    },
    
    // == Methods
    methods: {
      handleScroll () {
        console.log('handleScroll')
        return
      }
    }
  }
</script>