find a regular expression to check letter,chinese character and slash(/)

Question

i want to check users\' input value when he input his name, if his input is a English name, the name only contains letters and must be divided with slash(/), example:

Answer 1

Not clear exactly what you want, maybe this:

^(?=.{1,20}$)[a-zA-Z\u4E00-\u9FA5]+(?:\/[a-zA-Z\u4E00-\u9FA5]+)?$