<p dir="auto">When sending OPTION requests with token requests, IE11 and below said that the list could not find the request header. They tried various methods, such as reducing the browser blocking script, using es6-primise, using babel-polyfill. All browsers except IE browser were normal, and asked for your help. Look at the reason. Thank you.<br>
<a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/31311845/63649116-2a34a780-c76c-11e9-9f3c-2bbec55d5483.png"><img src="https://user-images.githubusercontent.com/31311845/63649116-2a34a780-c76c-11e9-9f3c-2bbec55d5483.png" alt="DIOX$EM@O0E$YJ5B30$QSYU" style="max-width: 100%;"></a></p>
<p dir="auto">在有带token请求的情况下，IE11及以下发送OPTION请求的时候说列表找不到请求头，尝试了各种办法，比如降低浏览器阻止脚本、使用es6-primise、使用babel-polyfill都尝试了依然不行，除了IE浏览器其他浏览器都正常，求大家的帮助帮看看是什么原因啊，谢谢。<br>
<a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/31311845/63649078-c1e5c600-c76b-11e9-9aad-66685995a719.png"><img src="https://user-images.githubusercontent.com/31311845/63649078-c1e5c600-c76b-11e9-9aad-66685995a719.png" alt="DIOX$EM@O0E$YJ5B30$QSYU" style="max-width: 100%;"></a></p>