javascript - js regular verification: up to 12 characters, only Chinese, English upper and lower case, numbers, basic symbols

Question

js regular verification: up to 12 characters, only Chinese, English upper and lower case, numbers, basic symbols;
How to verify abnormal symbols

Answer 1

Assume the basic symbols are -, _ (add according to specific circumstances)

/^[A-Za-z\d_\-\u4e00-\u9fa5]{1,12}$/.test('segmentfault')