Home WeChat Applet Mini Program Development Implementation of rich text to text conversion in WeChat mini program

Implementation of rich text to text conversion in WeChat mini program

Jun 26, 2018 pm 05:33 PM
WeChat applet

这篇文章主要介绍了微信小程序 富文本转文本实例详解的相关资料,需要的朋友可以参考下

微信小程序-富文本转文本

最近小程序这么火,我也来搞搞。发现了一个恶心的问题。小程序没有组件能支持富文本内容的,改接口又不太合适,于是有了这问,没技术含量纯粹记录

首先我们看眼没有被格式的富文本显示:

*.wxml内代码。content是富文本内容

 <view>
   <text>{{content}}</text>
  </view>
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显示结果:

由以上图片看到,小程序无法解析html文件

我们需要处理html富文本内容,让其显示好看点

下面直接上代码了,主要功能就是利用js的replace 对富文本经行处理,大家可以看一下。一起优化,方便对富文本更好的处理。

convertHtmlToText: function convertHtmlToText(inputText) {
  var returnText = "" + inputText;
  returnText = returnText.replace(/<\/p>/ig, &#39;\r\n&#39;);
  returnText = returnText.replace(/<\/li>/ig, &#39;\r\n&#39;);
  returnText = returnText.replace(/<li>/ig, &#39; * &#39;);
  returnText = returnText.replace(/<\/ul>/ig, &#39;\r\n&#39;);
  //-- remove BR tags and replace them with line break
  returnText = returnText.replace(/<br\s*[\/]?>/gi, "\r\n");

  //-- remove P and A tags but preserve what&#39;s inside of them
  returnText=returnText.replace(/<p.*?>/gi, "\r\n");
  returnText=returnText.replace(/<a.*href="(.*?)".*>(.*?)<\/a>/gi, " $2 ($1)");

  //-- remove all inside SCRIPT and STYLE tags
  returnText=returnText.replace(/<script.*>[\w\W]{1,}(.*?)[\w\W]{1,}<\/script>/gi, "");
  returnText=returnText.replace(/<style.*>[\w\W]{1,}(.*?)[\w\W]{1,}<\/style>/gi, "");
  //-- remove all else
  returnText=returnText.replace(/<(?:.|\s)*?>/g, "");

  //-- get rid of more than 2 multiple line breaks:
  returnText=returnText.replace(/(?:(?:\r\n|\r|\n)\s*){2,}/gim, "\r\n\r\n");

  //-- get rid of more than 2 spaces:
  returnText = returnText.replace(/ +(?= )/g,&#39;&#39;);

  //-- get rid of html-encoded characters:
  returnText=returnText.replace(/ /gi," ");
  returnText=returnText.replace(/&/gi,"&");
  returnText=returnText.replace(/"/gi,&#39;"&#39;);
  returnText=returnText.replace(/</gi,&#39;<&#39;);
  returnText=returnText.replace(/>/gi,&#39;>&#39;);

  return returnText;
}
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将上面代码放入任意适合的小程序js文件中, 然后在需要处理数据的js文件里,引入文件,下面给出放入app.js文件中的调用示

例:

var app = getApp()//获取app小程序实例
 onLoad: function (options) {
    wx.request({
   url: &#39;http://example.com/api&#39; + options.id+&#39;.json&#39;,
   headers: {
    &#39;Content-Type&#39;: &#39;application/json&#39;
   },
   success: function (res) {
    res.data.content = app.convertHtmlToText(res.data.content )
     that.setData({
      art: res.data.content
     })
     console.log(res.data)
   }
  })
}
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然后编译刷新下,可以看到结果了:

这里可以继续调整下css,使显示得更好看点。

以上就是本文的全部内容,希望对大家的学习有所帮助,更多相关内容请关注PHP中文网!

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