JSFiddle
Codepen
缺少什么？
Please see my two previous links.
您没有向Codepen添加资源，我是从jsfiddle添加的，现在codepen可以工作了，
https://unpkg.com/[email protected]/dist/leaflet.js https://unpkg.com/[email protected]/dist/vue2-leaflet.js https://unpkg.com/[email protected]/dist/leaflet.css