Published: 17 Jan 2020 › Updated: 17 Jan 2020
js提取Markdown文本中的摘要 / 网络研习社#59
在上一篇中提取了图片,单独显示。正文的摘要也要提取出来以做展示,如上图所示。
不多说,直接到解决方案:
abstractFn(res){
if(!res){
return ''
}else{
let str=res.replace(/(\*\*|__)(.*?)(\*\*|__)/g,'') //全局匹配内粗体
.replace(/\!\[[\s\S]*?\]\([\s\S]*?\)/g,'') //全局匹配图片
.replace(/\([\s\S]*?\)/g,'') //全局匹配连接
.replace(/<\/?.+?\/?>/g,'') //全局匹配内html标签
.replace(/(\*)(.*?)(\*)/g,'') //全局匹配内联代码块
.replace(/`{1,2}[^`](.*?)`{1,2}/g,'') //全局匹配内联代码块
.replace(/```([\s\S]*?)```[\s]*/g,'') //全局匹配代码块
.replace(/\~\~(.*?)\~\~/g,'') //全局匹配删除线
.replace(/[\s]*[-\*\+]+(.*)/g,'') //全局匹配无序列表
.replace(/[\s]*[0-9]+\.(.*)/g,'') //全局匹配有序列表
.replace(/(#+)(.*)/g,'') //全局匹配标题
.replace(/(>+)(.*)/g,'') //全局匹配摘要
.replace(/\r\n/g,"") //全局匹配换行
.replace(/\n/g,"") //全局匹配换行
.replace(/\s/g,"") //全局匹配空字符;
return str.slice(0,180)
}
}
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