20 - 节流点击指令

[993305280]

// 你的答案
<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`
 *
*/

const VDebounceClick = {
 beforeMount(el, binding) {
    const delay = Number(binding.arg) || 200;
    let timer;
    el.addEventListener("click", () => {
      clearTimeout(timer);
      timer = setTimeout(() => {
        binding.value();
      }, delay);
    });
  }
}

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>