page: 📄 透明度

src/views/styling/opacity/index.vue

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+<template>
+	<div id="container"></div>
+</template>
+
+<script setup lang="ts">
+import { useWindowSize } from '@vueuse/core';
+import Konva from 'konva/lib';
+import { onMounted } from 'vue';
+
+const { width, height } = useWindowSize();
+
+const initial = () => {
+	const stage = new Konva.Stage({
+		container: 'container',
+		width: width.value,
+		height: height.value,
+	});
+
+	const layer = new Konva.Layer({ draggable: true });
+
+	const pentagon = new Konva.RegularPolygon({
+		x: stage.width() / 2,
+		y: stage.height() / 2,
+		sides: 5,
+		radius: 70,
+		fill: 'red',
+		stroke: 'black',
+		strokeWidth: 4,
+		opacity: 0.2,
+	});
+
+	pentagon.on('mouseover', function () {
+		this.opacity(1);
+	});
+	pentagon.on('mouseout', function () {
+		this.opacity(0.2);
+	});
+
+	layer.add(pentagon);
+	stage.add(layer);
+};
+
+onMounted(() => {
+	initial();
+});
+</script>