版本：2.1.8
- https://cdn.bootcdn.net/ajax/libs/vue/2.1.8/vue.common.js
- https://cdn.bootcdn.net/ajax/libs/vue/2.1.8/vue.common.min.js
- https://cdn.bootcdn.net/ajax/libs/vue/2.1.8/vue.js
- https://cdn.bootcdn.net/ajax/libs/vue/2.1.8/vue.min.js
- https://cdn.bootcdn.net/ajax/libs/vue/2.1.8/vue.runtime.common.js
- https://cdn.bootcdn.net/ajax/libs/vue/2.1.8/vue.runtime.common.min.js
- https://cdn.bootcdn.net/ajax/libs/vue/2.1.8/vue.runtime.js
- https://cdn.bootcdn.net/ajax/libs/vue/2.1.8/vue.runtime.min.js