这个正则表达式是什么意思呀

这个正则表达式是什么意思呀var InTextRegMatch=new RegExp('(?: <a.*?>)((0 && image.height>0){if(image.width>=700){this.width=700;this.height=image.height*700/image.width;}}".*?>)|(?:)((\\n|\\r|.)*?)(?: <\/span>(.*)))','gi'">\\n|\\r|.)*?)(?: <\/a>(.*))|(?: <script.*?>)((\\n|\\r|.)*?)(?: <\/script>(.*))|(?: <font.*?>)((\\n|\\r|.)*?)(?: <\/font>(.*)|(?: <select.*?>)((\\n|\\r|.)*?)(?: <\/select>(.*)|(?: <input.*?>)((\\n|\\r|.)*?))|(?: <img.*?>)|(?: <span.*?>)((\\n|\\r|.)*?)(?: <\/span>(.*)))','gi');