JavaScript 正则表达式提取字符串中的特定标记

const\ a\ =\ '0{#3#}1{#1#}2{#2#}';\nconst\ regex\ =\ /{#([^#]+)#}/g;\nconst\ matches\ =\ a.match(regex);\nconsole.log(matches);\ //\ ['{#3#}',\ '{#1#}',\ '{#2#}']