//匹配图片
res.content = res.content.replace(/<img[^>]*>/ig,function(match, capture){//match 图片路径//匹配图片中的width、height 进行处理替换
match = match.replace(/(width="(.*?)")|(height="(.*?)")/ig,function(getFirst, getSecond){//getFirst 取出图片的width \ height
let numArr = getFirst.split('=');
let num = numArr[0]+'='+Number(JSON.parse(numArr[1]))/1.6;return num
});return match
})
2、将img中width / height清空
match = match.replace(/(style="(.*?)")|(width="(.*?)")|(height="(.*?)")/ig,'');
二、匹配后台html模板中的font-size，将px --> rpx
res.content = res.content.replace(/font-size:\w+;?/g,function(val, group){
val = val.replace(/(\d+)px/g,function(value, groupp){return groupp +'rpx'})return val
})
