mirror of https://gitee.com/antv-l7/antv-l7
142 lines
2.2 KiB
Markdown
142 lines
2.2 KiB
Markdown
---
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title: Marker 标注
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order: 3
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---
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Marker 地图标注 目前只支持 2D Dom 标注
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## 构造函数
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Marker
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`const Marker = new L7.Marker(option)`
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#### option
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- color `string`
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 设置默认 marker 的颜色
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- element `Dom|string` 自定义 marker Dom 节点，可以是 dom 实例，也可以是 dom id
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- anchor `string` 锚点位置 支持 center, top, top-left, top-right, bottom, bottom-left,bottom-right,left, right
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- offsets `Array` 偏移量 [ 0, 0 ] 分别表示 X, Y 的偏移量
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- extData 用户自定义属性，支持任意数据类型，存储 marker 属性信息
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### 添加到 Scene
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```javascript
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scene.addMarker(marker);
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```
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## 方法
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#### setLnglat
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设置 marker 经纬度位置
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#### remove
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移除 marker
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#### getElement
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获取 marker dom Element
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### setElement
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- element `dom`
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设置 element 通过此方法更新 Marker 样式
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#### getLngLat
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获取 marker 经纬度坐标
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#### togglePopup
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开启或者关闭 marker 弹出框
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#### openPopup
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打开 Popup
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### closePopup
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关闭 popup
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#### setPopup
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为 marker 设置 popup
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#### getPopup
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获取 marker 弹出框
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#### getExtData()
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获取用户自定义数据
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#### setExtData(data)
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设置用户自定义数据
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## 示例代码
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#### 默认 Marker
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`const marker = new L7.Marker({color:'blue'})`
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#### 自定义 Marker
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```javascript
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var el = document.createElement('label');
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el.className = 'labelclass';
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el.textContent = data[i].v;
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el.style.background = getColor(data[i].v);
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const marker = new L7.Marker({
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element: el,
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}).setLnglat([data[i].x * 1, data[i].y]);
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scene.addMarker(marker);
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```
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#### 设置 popup
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```javascript
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var popup = new L7.Popup({
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anchor: 'left',
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}).setText(item.name);
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new L7.Marker({
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element: el,
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})
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.setLnglat(item.coordinates)
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.setPopup(popup);
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```
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## 事件
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### 鼠标事件
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- mousemove
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- click
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- mousedown
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- mouseup
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- dblclick
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- contextmenu
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- mouseover
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- mouseout
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事件返回数据
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- target 事件触发源
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- data extData 用户自定义数据
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- lnglat marker 经纬度
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```javascript
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marker.on('click', (e) => {});
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```
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## demo 地址
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[demo1](../../../examples/tutorial/marker)
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