初始Vue3.0（7）——模块化-鼠标追踪

模块化开发 第一部分 鼠标追踪器

// 在单组件内添加对应逻辑
const x = ref(0)
const y = ref(0)
const updateMouse = (e: MouseEvent) => {
  x.value = e.pageX
  y.value = e.pageY
}
onMounted(() => {
  document.addEventListener('click', updateMouse)
})
onUnmounted(() => {
  document.removeEventListener('click', updateMouse)
})

// 将组件内逻辑抽象成可复用的函数
function useMouseTracker() {
  // const positions = reactive<MousePostion>({
  //   x: 0,
  //   y: 0
  // })
  const x = ref(0)
  const y = ref(0)
  const updatePosition = (event: MouseEvent) => {
    x.value = event.clientX
    y.value = event.clientY 
  }
  onMounted(() => {
    document.addEventListener('click', updatePosition)
  })
  onUnmounted(() => {
    document.removeEventListener('click', updatePosition)
  })
  return { x, y }
}

export default useMouseTracker