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How to use Vue to implement map annotation effects

王林Original: 2023-09-19 13:50:051221browse

How to use Vue to implement map annotation effects requires specific code examples

Foreword:
Vue is a popular front-end framework that provides a wealth of tools and Function that can help us quickly build interactive web applications. In this article, we will introduce how to use Vue to implement map annotation effects and provide detailed code examples.

1. Preparation:
Before we start, we need to prepare the following tools and resources:

Vue.js: Please make sure you have installed Vue.js and are familiar with it Basic syntax and usage.
Map API: We will use Baidu Map API as an example, so you need to register a Baidu Map developer account and obtain a developer key (AK).
Map annotation icons: In order to achieve map annotation special effects, we need to prepare some custom icons for map annotation, which can be found and downloaded on websites such as IconFont.

2. Create a Vue project:
First, we need to create a Vue project, which can be quickly built through the Vue CLI tool. Open the terminal and execute the following command:

# 安装Vue CLI
npm install -g @vue/cli

# 创建一个新的Vue项目
vue create map-demo
cd map-demo

# 启动开发服务器
npm run serve

3. Add Baidu Map API:
In the public/index.html file in the project root directory, add the corresponding Baidu Map API Script:

<!DOCTYPE html>
<html lang="en">
<head>
    ...
    <script src="http://api.map.baidu.com/api?v=3.0&ak=你的开发者密钥"></script>
    ...
</head>
<body>
    ...
</body>
</html>

Please replace the your developer key above with your own Baidu Maps developer key.

4. Create a map component:
Next, we will create a map component for displaying the map and processing labeling logic. In the src/components directory, create a file named Map.vue and add the following code:

<template>
  <div id="map"></div>
</template>

<script>
export default {
  mounted() {
    this.initMap();
  },
  methods: {
    initMap() {
      // 创建地图实例
      const map = new BMap.Map('map');
      // 设置默认显示的地图中心点
      const point = new BMap.Point(121.48, 31.22);
      map.centerAndZoom(point, 11);

      // 开启鼠标滚轮缩放
      map.enableScrollWheelZoom();

      // 添加标注
      const marker = new BMap.Marker(point);
      map.addOverlay(marker);

      // 添加标注点击事件
      marker.addEventListener('click', () => {
        alert('你点击了标注！');
      });
    },
  },
};
</script>

In the above code, we pass BMap.MapCreates a map instance and sets the default map center point and zoom level. We then created a marker via BMap.Marker and added it to the map. Finally, we added a click event for the annotation, and a prompt box will pop up when the annotation is clicked.

5. Use the map component:
In src/App.vue, add the following code to use the map component:

<template>
  <div id="app">
    <Map />
  </div>
</template>

<script>
import Map from './components/Map.vue';

export default {
  components: {
    Map,
  },
};
</script>

Now, we can run the project , open the browser, and you can see the map and annotations.

6. Add annotation animation effect:
In order to achieve annotation animation effect, we can achieve it through CSS animation. We need to modify the code in Map.vue and add the corresponding CSS style. The modified code is as follows:

<template>
  <div id="map">
    <div class="marker"></div>
  </div>
</template>

<script>
export default {
  mounted() {
    this.initMap();
  },
  methods: {
    initMap() {
      const map = new BMap.Map('map');
      const point = new BMap.Point(121.48, 31.22);
      map.centerAndZoom(point, 11);
      map.enableScrollWheelZoom();

      // 添加标注
      const marker = new BMap.Marker(point);
      map.addOverlay(marker);

      // 添加标注点击事件
      marker.addEventListener('click', () => {
        alert('你点击了标注！');
      });

      // 添加标注动画效果
      marker.setAnimation(BMAP_ANIMATION_BOUNCE);
    },
  },
};
</script>

<style scoped>
.marker {
  width: 30px;
  height: 30px;
  background-color: red;
  border-radius: 50%;
  animation: marker-animate 1s infinite;
}

@keyframes marker-animate {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.2);
  }
}
</style>

In the above code, we added a marker style to the annotation and defined a class named marker-animate animation. This animation will cause the annotation to cyclically zoom in and out within 1 second to achieve the animation effect.

So far, we have successfully implemented the map annotation special effects. Through the above steps, we created a Vue project, added labels to the map, and added click events and animation effects to the labels.

Summary:
This article introduces how to use Vue to implement map annotation effects, and provides detailed code examples. Through the above steps, we can quickly master how to use the map API in the Vue project and achieve interactive map annotation effects. I hope this article can be helpful to everyone. Interested readers can further explore and practice based on the examples in this article.

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