假设我想匹配 url,它们不在 html 标签的特定属性集中。
<span cstm1="url1" cstm2="url2" data-x="url3">url4</span>
我只想匹配 url3 和 url4,所以我尝试了类似的方法:
/(?!(?:cstm1|cstm2)=["']?)(url_regex)/g
问题是消极的前瞻性断言在它之前需要一些东西,我不能确保数字不能在引号内,因为它仍然是有效的,所以我没有任何合理的理由来支持这个消极的前瞻性断言。
如果我能够在断言后面使用否定的外观,那将非常容易,但我使用的是不支持它的 javascript,所以我有点卡住并寻求有关如何实现这一点的帮助。
我寻找仅正则表达式的解决方案。
编辑:
我用来查找网址的网址正则表达式:
((?:(?:https?):\/\/)(?:\S+(?::\S*)?@)?(?:(?!10(?:\.\d{1,3}){3})(?!127(?:\.\d{1,3}){3})(?!169\.254(?:\.\d{1,3}){2})(?!192\.168(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|\[(?:(?:[0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|(?:[0-9a-fA-F]{1,4}:){1,7}:|(?:[0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|(?:[0-9a-fA-F]{1,4}:){1,5}(?::[0-9a-fA-F]{1,4}){1,2}|(?:[0-9a-fA-F]{1,4}:){1,4}(?::[0-9a-fA-F]{1,4}){1,3}|(?:[0-9a-fA-F]{1,4}:){1,3}(?::[0-9a-fA-F]{1,4}){1,4}|(?:[0-9a-fA-F]{1,4}:){1,2}(?::[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:(?:(?::[0-9a-fA-F]{1,4}){1,6})|:(?:(?::[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(?::[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(?:ffff(?::0{1,4}){0,1}:){0,1}(?:(?:25[0-5]|(?:2[0-4]|1{0,1}[0-9]){0,1}[0-9]).){3,3}(?:25[0-5]|(?:2[0-4]|1{0,1}[0-9]){0,1}[0-9])|(?:[0-9a-fA-F]{1,4}:){1,4}:(?:(?:25[0-5]|(?:2[0-4]|1{0,1}[0-9]){0,1}[0-9]).){3,3}(?:25[0-5]|(?:2[0-4]|1{0,1}[0-9]){0,1}[0-9]))\]|localhost|(?:xn--[a-z0-9\-]{1,59}|(?:(?:[a-z\u00a1-\uffff0-9]+-?){0,62}[a-z\u00a1-\uffff0-9]{1,63}))(?:\.(?:xn--[a-z0-9\-]{1,59}|(?:[a-z\u00a1-\uffff0-9]+-?){0,62}[a-z\u00a1-\uffff0-9]{1,63}))*(?:\.(?:xn--[a-z0-9\-]{1,59}|(?:[a-z\u00a1-\uffff]{2,63}))))(?::\d{2,5})?(?:\/[^"'()<>\s]*)?)