js 获取文件名后缀

【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>>

js 获取文件名后缀

function get_file_suffix (filename) {
  pos = filename.lastIndexOf('.')
  suffix = ''
  if (pos != -1) {
    suffix = filename.substring(pos)
  }
  return suffix;
}

来源：oschina

链接：https://my.oschina.net/u/3756690/blog/3147091