MutationObserver.js

MutationObserver shim for ES3 environments

https://cdnjs.webstatic.cn/ajax/libs/MutationObserver.js/0.3.7/mutationobserver.map
1. 复制链接
https://cdnjs.webstatic.cn/ajax/libs/MutationObserver.js/0.3.7/mutationobserver.min.js