[尝试构建chrome扩展内容脚本,以向GitHub问题页面添加额外的有用导航。通过正常网页进行交互(最终用户单击反应表情符号)时,我注入的元素丢失了。
我能够解决它的唯一方法是设置一个间隔,该间隔会不断删除并将计数器元素注入页面中。
必须有一种比这更优雅的方法,它可以对DOM更改做出响应,以便我可以删除并重新注入元素(而不是一直敲门)?
addReactionsNav.js
const URL =
window.location.origin + window.location.pathname + window.location.search
const header = document.querySelector('#partial-discussion-sidebar')
header.style = `position: relative;height: 100%;`
let wrapper = getWrapper()
// // The isolated world made it difficult to detect DOM changes in the shared DOM
// // So this monkey-hack to make it refresh when ..
// setInterval(() => {
// wrapper.remove()
// wrapper = getWrapper()
// addReactionNav()
// }, 1000)
// Select the node that will be observed for mutations
const targetNode = document.querySelector('body')
// Options for the observer (which mutations to observe)
const config = { attributes: true, childList: true, subtree: true }
// Create an observer instance linked to the callback function
const observer = new MutationObserver(() => addReactionNav())
// Start observing the target node for configured mutations
observer.observe(targetNode, config)
function getWrapper() {
const header = document.querySelector('#partial-discussion-sidebar')
const wrapper = header.appendChild(document.createElement('div'))
wrapper.style = `
position:sticky;
position: -webkit-sticky;
top:10px;`
return wrapper
}
function addReactionNav() {
const title = document.createElement('div')
title.style = `font-weight: bold`
title.appendChild(document.createTextNode('Reactions'))
wrapper.appendChild(title)
// Grabbing all reactions Reactions �� �� �� �� ❤️ �� �� ��
const reactionsNodes = document.querySelectorAll(`
[alias="+1"].mr-1,
[alias="rocket"].mr-1,
[alias="tada"].mr-1,
[alias="heart"].mr-1,
[alias="smile"].mr-1,
[alias="thinking_face"].mr-1,
[alias="-1"].mr-1,
[alias="eyes"].mr-1
`)
const reactionsNodesParents = [
...new Set(
Array.from(reactionsNodes).map(node => node.parentElement.parentElement)
),
]
reactionsNodesParents.forEach(node => {
const a = document.createElement('a')
const linkText = document.createTextNode('\n' + node.innerText)
a.appendChild(linkText)
a.title = node.innerText
let id = null
while (id == null || node != null) {
if (node.tagName === 'A' && node.name) {
id = node.name
break
}
if (node.id) {
id = node.id
break
}
node = node.parentNode
}
const postURL = URL + '#' + id
a.href = postURL
a.style = `display:block;`
wrapper.appendChild(a)
})
}
manifest.json
{
"manifest_version": 2,
"name": "Github Issue Reactions",
"version": "1.0",
"description": "List a link of reactions on a github issue page",
"permissions": ["https://www.github.com/", "http://www.github.com/"],
"content_scripts": [
{
"matches": ["*://*.github.com/*/issues/*"],
"js": ["addReactionsNav.js"],
"run_at": "document_end"
}
]
}
发现关于“孤立世界”的简短提及
https://youtu.be/laLudeUmXHM?t=79
我现在认为“错误”是由于CORB引起的-这是针对Spectre的安全措施。
跨域读取阻止(CORB)阻止了MIME类型为application / json的跨域响应https://api.github.com/_private/browser/stats。有关更多详细信息,请参见https://www.chromestatus.com/feature/5629709824032768。
Google在他们的演讲Lessons from Spectre and Meltdown, and how the whole web is getting safer (Google I/O '18)中解释了更多有关此问题的信息>
34:00处提到的示例此后似乎已被CORB阻止。
[尝试构建chrome扩展内容脚本,以向GitHub问题页面添加额外的有用导航。通过正常网页进行交互时(最终用户单击反应表情符号)-我的...
如果当前选项卡已更新,则可以将消息传递回您的内容脚本以重新注入您的内容。