This made me curious about how often programmers are confused about this. For anchors, this question can be answered by looking for regexes that unnecessarily use anchors to match entire strings in pattern attributes. This is a question that can be answered with, drumroll, a regular expression! Well, assuming we ignore escaping. If the regex matches the regex /^\^.*\$$/ it's a sure sign that the author wanted to be extra careful, didn't know about the semantics of the attribute, or were reusing code from the back-end for front-end validation.
[37]1000M速率及以上的宽带接入用户是指报告期末下行速率大于或等于1000Mbit/s的宽带接入用户。，更多细节参见体育直播
Code dump for 2.16，更多细节参见下载安装汽水音乐
Stephen StaffordBBC News, South