从浏览器到钉钉：H5图标显示疑云

前言

H5页面接入钉钉，看似简单，实则暗藏玄机。其中一个棘手的问题便是图标显示异常，这往往令开发者束手无策。本文将深入剖析这一问题，并提供一种行之有效的解决方案，帮助你轻松解决H5页面在钉钉中图标不显示的烦恼。

问题现象：图标消失之谜

在一个风和日丽的下午，我信心满满地将移动端H5页面接入钉钉，却发现一个令人头疼的现象——图标不翼而飞了！原本在浏览器中显示正常的图标，在钉钉中却踪影全无，仿佛凭空蒸发一般。

探索根源：浏览器网络请求的秘密

为了找出问题所在，我打开浏览器的开发者工具，仔细分析了网络请求。令人惊讶的是，我发现H5页面在加载时向服务器发出了两个图标文件请求：iconfont.woff和iconfont.ttf。

经过一番调查，我了解到，woff和ttf都是字体图标文件格式。woff格式是Web Open Font Format的缩写，是一种专门针对Web环境设计的字体格式。ttf格式则是TrueType Font的缩写，是微软开发的一种字体格式。

解决方案：Base64编码的救赎

经过一番思考，我意识到，问题可能出在钉钉对woff和ttf格式的不支持上。为了验证我的猜测，我尝试将图标文件转换为base64格式。base64是一种二进制编码格式，它可以将二进制数据转换为一串可打印的ASCII字符。

我使用在线工具将woff和ttf图标文件分别转换为base64格式，并将它们嵌入到H5页面的CSS文件中。奇迹发生了！图标在钉钉中重新焕发了生机，显示得清晰无误。

总结：从浏览器到钉钉的图标之旅

H5页面在钉钉中图标不显示的问题看似复杂，但通过分析浏览器网络请求，了解图标文件格式的差异，并采用base64编码的方式，我们最终找到了解决办法。这一过程充分体现了技术探索与解决问题的乐趣，也为我们在开发移动端H5页面时提供了宝贵的经验。

附录：示例代码

/* 嵌入woff图标 */
@font-face {
  font-family: 'iconfont';
  src: url(data:application/x-font-woff;charset=utf-8;base64,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