/*** 处理富文本里的图片宽度自适应* 1.去掉img标签里的style、width、height属性* 2.img标签添加style属性：max-width:100%;height:auto* 3.修改所有style里的width属性为max-width:100%* 4.去掉<br/>标签* @param html* @returns {void|string|*}*/export function formatRichText(html){let newContent= html.replace(/<img[^>]*>/gi,function(match,capture){match = match.replace(/style="[^"]+"/gi, '').replace(/style='[^']+'/gi, '');match = match.replace(/width="[^"]+"/gi, '').replace(/width='[^']+'/gi, '');match = match.replace(/height="[^"]+"/gi, '').replace(/height='[^']+'/gi, '');return match;});newContent = newContent.replace(/style="[^"]+"/gi,function(match,capture){match = match.replace(/width:[^;]+;/gi, 'max-width:100%;').replace(/width:[^;]+;/gi, 'max-width:100%;');return match;});newContent = newContent.replace(/<br[^>]*\/>/gi, '');newContent = newContent.replace(/\<img/gi, '<img style="max-width:100%;height:auto;display:block;margin:10px 0;"');return newContent;}
参考
微信小程序 rich-text 富文本中图片自适应
