/^[\s\u3000]*|[\s\u3000]*$/
温故而知新，可以为师矣。 博客：www.ouyangke.com
s means English space, u3000 means Chinese space ^[su3000]* matches the beginning of a space, [su3000]*$ matches if there is a space at the end, Wu Ke is right
s
u3000
^[su3000]*
[su3000]*$
Match Chinese and English spaces at the beginning or end of the line
Match half-width and full-width spaces before and after a string
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smeans English space,u3000means Chinese space^[su3000]*matches the beginning of a space,[su3000]*$matches if there is a space at the end, Wu Ke is rightMatch Chinese and English spaces at the beginning or end of the line
Match half-width and full-width spaces before and after a string