正则表达式

正则替换，给图片加懒加载属性
content = content.replace(/[video]*?src=['"]([^'"]+)[^>]*>/gi, VIDEO_BASE_SRC + "$1"  " + 'webkit-playsinline playsinline />');
content = content.replace(/<img.*?(?=src)src=['"]([^'"]+)[^>]*>/gi, '<img ' + BASE_SRC + "$1" class="lazy" " + LOADING_SRC + '/>');