尝试一下:

/^[A-Za-z0-9]+(?:-[A-Za-z0-9]+)*$/

这将仅匹配由单个-分隔的一个或多个字母数字字符序列.如果您不想允许单个单词(例如，只是 hello )，请用 + 替换 * 乘数，以仅重复一个或多个最后一组.

This will only match sequences of one or more sequences of alphanumeric characters separated by a single -. If you do not want to allow single words (e.g. just hello), replace the * multiplier with + to allow only one or more repetitions of the last group.