如何检查我的字符串是否包含连字符，如果包含，如何获取该连字符之前的字符串？

Question

The string should contain only one hyphen, eg.if the string is ABC-123, then I need to fetch ABC

Answer 1

You may match on the following pattern:

^[^-]+

This will match the first part of a hyphenated input. It also will match the entire input should the input not have any hyphen at all.

Here is a regex demo .