正则替换编辑器特殊字符
txt.replace(/</g,"<").replace(/>/g,">").replace(/&nbsp;/g,"").replace(/<\/?.+?>/g,'').replace(/(\s{2,80})/g,'').replace(/nbsp;/g,"")
txt.replace(/</g,"<").replace(/>/g,">").replace(/&nbsp;/g,"").replace(/<\/?.+?>/g,'').replace(/(\s{2,80})/g,'').replace(/nbsp;/g,"")