前端初始化

node_modules/element-plus/lib/components/backtop/src/use-backtop.js

@@ -0,0 +1,40 @@
+Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
+require("../../../_virtual/_rolldown/runtime.js");
+const require_error = require("../../../utils/error.js");
+let _vueuse_core = require("@vueuse/core");
+let vue = require("vue");
+//#region ../../packages/components/backtop/src/use-backtop.ts
+const useBackTop = (props, emit, componentName) => {
+	const el = (0, vue.shallowRef)();
+	const container = (0, vue.shallowRef)();
+	const visible = (0, vue.ref)(false);
+	const handleScroll = () => {
+		if (el.value) visible.value = el.value.scrollTop >= props.visibilityHeight;
+	};
+	const handleClick = (event) => {
+		el.value?.scrollTo({
+			top: 0,
+			behavior: "smooth"
+		});
+		emit("click", event);
+	};
+	(0, _vueuse_core.useEventListener)(container, "scroll", (0, _vueuse_core.useThrottleFn)(handleScroll, 300, true));
+	(0, vue.onMounted)(() => {
+		container.value = document;
+		el.value = document.documentElement;
+		if (props.target) {
+			el.value = document.querySelector(props.target) ?? void 0;
+			if (!el.value) require_error.throwError(componentName, `target does not exist: ${props.target}`);
+			container.value = el.value;
+		}
+		handleScroll();
+	});
+	return {
+		visible,
+		handleClick
+	};
+};
+//#endregion
+exports.useBackTop = useBackTop;
+
+//# sourceMappingURL=use-backtop.js.map