20 - 节流点击指令

[Sunny264]

<script setup lang='ts'>

/**
 * Implement the custom directive
 * Make sure the `onClick` method only gets triggered once when clicked many times quickly
 * And you also need to support the debounce delay time option. e.g `v-debounce-click:ms`
 *
*/
function debounce(fn,delay){
  let timer = null
  return (...args)=>{
    clearTimeout(timer)
    timer = setTimeout(()=>{
          fn.apply(this, args)
      }, delay)
  }
 }

const VDebounceClick = {
  mounted(el,binding){
    el.addEventListener("click", debounce(binding.value, binding.arg));
  },
}

function onClick() {
  console.log("Only triggered once when clicked many times quickly")
}

</script>

<template>
  <button v-debounce-click:200="onClick">
    Click on it many times quickly
  </button>
</template>