请你用vue框架基于leaflet实现轨迹回放功能并写一个完整代码实例

好的，以下是使用vue框架基于leaflet实现轨迹回放功能的代码实例：

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

<script>
import L from 'leaflet'
import 'leaflet/dist/leaflet.css'

export default {
data() {
return {
map: null,
marker: null,
polyline: null,
coords: [
[39.906756, 116.401427],
[39.90652, 116.402714],
[39.906433, 116.404007],
[39.906493, 116.405268],
[39.906424, 116.406601],
[39.906279, 116.407939],
[39.906179, 116.409251]
],
currentIndex: 0,
intervalId: null,
speed: 500
}
},
mounted() {
this.initMap()
},
methods: {
initMap() {
const map = L.map('map').setView([39.906756, 116.401427], 15)

L.tileLayer(
'https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png',
{
attribution: 'Map data © <a href="https://openstreetmap.org">OpenStreetMap</a> contributors',
maxZoom: 18
}
).addTo(map)

const marker = L.marker(this.coords[0]).addTo(map)

const polyline = L.polyline(this.coords, { color: 'red' }).addTo(map)

this.map = map
this.marker = marker
this.polyline = polyline
},
startPlayback() {
this.intervalId = setInterval(() => {
this.currentIndex++
if (this.currentIndex >= this.coords.length) {
clearInterval(this.intervalId)
return
}
const coord = this.coords[this.currentIndex]
this.marker.setLatLng(coord)
this.map.setView(coord)
}, this.speed)
},
stopPlayback() {
clearInterval(this.intervalId)
}
}
}
</script>

<style>
#map {
height: 500px;
}
</style>

当然，你可以根据实际需求对代码进行修改和优化。