整理标签并提及

Question

对于如何返回包含井号'＃'并提及'@'出现次数的对象，我有些困惑

我一直在尝试结合使用filter和map方法，但没有运气

功能hashtagandmentions（单词）{

E.g. "The football was great @england  #winning #goals"

 The function should return an object describing the number of hashtags and mentions found:

Answer 1

只需尝试：

const output = {
  hashtags: (str.match(/#\w+/g) || []).length,
  mentions: (str.match(/@\w+/g) || []).length,
}