js 获取文件后缀

PHOTO EMBED

Tue Jul 05 2022 17:03:23 GMT+0000 (Coordinated Universal Time)

Saved by @yueli 

var suffix = name.substring(name.lastIndexOf("."));//.txt
/*只获取后缀*/
var suffix =name.substring(name.lastIndexOf(".")+1);//txt
content_copyCOPY

https://blog.csdn.net/z591102/article/details/124426036