function updateRich(content){ var reg = new RegExp(/style\s*?=\s*?(['"])[\s\S]*?\1/,"g");//g,表示全部替换。 let content1 = content.replace(reg,""); var reg2 = new RegExp('<p','g') let content2 = content1.replace(reg2,'<p style="font-family:微软雅黑;font-size:16px;line-height:200%;"'); var reg3 = new RegExp(/<\/?font[^>]*>/gi,"g") let content3 = content2.replace(reg3,''); return content3 }