ie9 开发工具 网络 发起程序

公司某页面被电信劫持，然后导致页面打开报错，从用户那里截图的一个请求是json请求，显示“发起程序”是“帧导航”。
从网上没有找到这个“发起程序”的含义，仅找到了英文版本的简单说明

https://docs.microsoft.com/en-us/previous-versions//gg130952(v=vs.85)

Initiator Summarizes the details of the Internet Explorer download action. Actions can include user refresh, speculative download that is initiated by tokenization during source parsing, speculative download during HTML pre-parsing, and download that is initiated by navigation of a frame. For requests that are initiated with an HTTP POST, such as form submissions, this tab is blank.

为了还原场景，使用了各种方法触发网络请求，最终得出结果，使用代码iframe.src="url"的方式是帧导航。

image.png