github:即使重新加载浏览器，评论也将保留，为什么? [英] github: comment will be remaining even if reload browser, why?

问题描述

当我在github的问题页面上写评论时，我注意到即使重新加载浏览器，评论正文仍然存在.

When I write a comment with github's issue page, I noticed that the comment body remains even if I reload the browser.

我已经检查了localStorage，sessionStorage，cacheStorage，IndexedDB，Cookie， 但是我找不到我写的句子的实例.

I have checked localStorage, sessionStorage, cacheStorage, IndexedDB, cookie, but I found no instance of the sentence that I wrote.

我还检查了Chrome Devtool的网络"标签，但找不到任何可疑的网络流量.

Also, I have checked the network tab of Chrome Devtool, but I could not find any suspicious network traffic.

github.com如何实现此恢复功能?

How does github.com achieve this recovery function?

推荐答案

他们正在使用SessionStorage来做到这一点:

They are using SessionStorage to do this:

页面离开:

1. 使用.js-session-resumable作为选择器选择所有输入字段
2. 将{id，value}对输入放入数组
3. 将其作为session-resume:/current/page/path放入SessionStorage

1. select all of the input fields with .js-session-resumable as selector
2. put {id, value} pair of inputs in an array
3. put it in SessionStorage as session-resume:/current/page/path

页面加载:

1. 通过SessionStorage
中的session-resume:/current/page/path键检查是否有任何值
2. 如果是，请更新输入值并从SessionStorage
中删除此记录

1. check if there are any values with session-resume:/current/page/path key in SessionStorage
2. if yes, update values of inputs and remove this record from SessionStorage

注意::如果您在页面中写评论(不提交)并转到另一页面，那么您可以看到您的评论保存在SessionStorage中.

Note: If you write a comment in a page (without submitting it) and go to another page, then you can see your comment saved in SessionStorage.

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