小程序富文本提取图片可放大缩小

var nodes = res.data.data.content;

if (nodes.indexOf("src") >= 0) {
}

//s3:正则匹配所有图片路径
var imgs = [];
nodes = nodes.replace(/<img [^>]*src=['"]([^'"]+)[^>]*>/gi, function (match, capture) {
 imgs.push(capture);
 that.setData({
  imgs: imgs
 });
 return '';
});

//s4:清除图片后正则匹配清除所有p标签
nodes = nodes.replace(/<p(([\s\S])*?)<\/p>/g, function (match, capture){
 return '';
});

//富文本图片放大
var nodes = res.data.data.content;
if (nodes.indexOf("src") >= 0) {
 //正则匹配所有图片路径
 var imgs = [];
 nodes = nodes.replace(/<img [^>]*src=['"]([^'"]+)[^>]*>/gi, function (match, capture) {
  imgs.push(capture);
  that.setData({
   imgs: imgs
  });
  return '';
 });
 //清除图片后正则匹配清除所有p标签
 nodes = nodes.replace(/<p(([\s\S])*?)<\/p>/g, function (match, capture){
  return '';
 });
}

<view class='detail'>
 <rich-text nodes="{{nodes}}" bindtap='richImg'></rich-text>
</view>
<view class='detail1'>
 <block wx:for="{{imgs}}" wx:key="" wx:for-item="item">
   <image class='img' src='{{item}}' bindtap='chooseImg' data-src='{{item}}'></image>
 </block>
</view>

chooseImg: function (e) {  //预览
 var src = e.currentTarget.dataset.src;
 var urls = [];
 urls[0] = src;
 wx.previewImage({
  current: src, // 当前显示图片的http链接 
  urls: urls
 })
},