/**
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* v-debounce
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* 按钮防抖指令，可自行扩展至input
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* 接收参数：function类型
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*/
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import type { Directive, DirectiveBinding } from "vue";
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interface ElType extends HTMLElement {
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__handleClick__: () => any;
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}
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const debounce: Directive = {
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mounted(el: ElType, binding: DirectiveBinding) {
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if (typeof binding.value !== "function") {
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throw "callback must be a function";
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}
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let timer: NodeJS.Timeout | null = null;
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el.__handleClick__ = function () {
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if (timer) {
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clearInterval(timer);
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}
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timer = setTimeout(() => {
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binding.value();
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}, 500);
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};
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el.addEventListener("click", el.__handleClick__);
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},
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beforeUnmount(el: ElType) {
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el.removeEventListener("click", el.__handleClick__);
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}
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};
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export default debounce;
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