Regex从字符串中获取float

如果它总是跟着 £ 字符,您甚至可以确保其他数字不匹配:

£\s*\d+(?:\.\d+)?

£          # GBP
\s*        # spaces, optional
\d+        # digits, required (at least one)
(?:        # non-capturing group 
  \.\d+    #   a literal dot, and more digits
)?         # end group, make optional

/(\d+[.]?\d*)/

编辑