我能想到两种可能的方法：
1 - 使用计时器检查您的脚本是否仍然存在，如果没有，请再次添加...
2 - 检查 ajax 调用，如果它们的 url 与删除脚本的 url 之一匹配，请再次添加脚本。
您的脚本（清单中定义的脚本）仍然存在，即使在 ajax 调用之后，它也不会再次运行（不确定历史推送器会发生什么）。所以，我假设您只需要读取一些元素或重新运行剥离。我假设您添加了附加 html 标记的脚本。
所以你需要的是读取元素或重新运行特定代码的东西。
1 - 计时器方法 - 我为希望添加到页面中某个 目标元素 的任何元素（不仅是脚本）创建了一个解决方案。
它使用计时器来检查目标元素是否存在。
当它找到目标元素时，它会添加我的元素。然后调整计时器以检查我的元素是否仍然存在。如果没有，请重新添加。
您只需拨打appendChildPersistent 一次，这将在您导航时一直保持活动状态。
var timers = {}; //stores the setInterval ids
//this is the only method you need to call
//give your script an `id` (1)
//the child is your script, it can be anything JQuery.append can take
//toElem is the Jquery "SELECTOR" of the element to add your script into.
//I'm not sure what would happen if toElem were not a string.
//callback is a function to call after insertion if desired, optional.
appendChildPersistent = function(id, child, toElem, callback)
{
//wait for target element to appear
withLateElement(toElem, function(target)
{
target.append(child); //appends the element - your script
if (typeof callback !== 'undefined') callback(); //execute callback if any
//create a timer to constantly check if your script is still there
timers[id] = setInterval(function()
{
//if your script is not found, clear this timer and tries to add again
if (document.getElementById(id) === null)
{
clearInterval(timers[id]);
delete timers[id];
appendChildPersistent(id, child, toElem, callback);
}
},3000);
});
}
//this function waits for an element to appear on the page
//since you can't foresee when an ajax call will finish
//selector is the jquery selector of the target element
//doAction is what to do when the element is found
function withLateElement(selector, doAction)
{
//checks to see if this element is already being waited for
if (!(selector in timers))
{
//create a timer to check if the target element appeared
timers[selector] = setInterval(function(){
var elem = $(selector);
//checks if the element exists and is not undefined
if (elem.length >= 0)
{
if (typeof elem[0] !== 'undefined')
{
//stops searching for it and executes the action specified
clearInterval(timers[selector]);
delete timers[selector];
doAction(elem);
}
}
}, 2000);
}
}
(1) 给脚本标签加个Id好像没问题：Giving the script tag an ID
2 - 捕获 ajax 调用
一个选项是使用chrome.webRequest。但奇怪的是，这对我不起作用。另一个选项如下。
对于这种情况，请检查this answer，并别忘了阅读其中的Chrome扩展程序的相关答案。仅当您遵循整个过程时，它才会起作用。幸运的是，我今天测试了它，效果很好：p
在这里，您要做的是更改 XMLHttpRequest 方法 open 和 send 以检测（也可能获取参数）何时调用它们。
但是，在 Google 扩展程序中，绝对有必要在页面中注入条带（不是后台页面或注入内容脚本的脚本，而是注入一些代码的内容脚本进入 dom，如下所示）。
var script = document.createElement('script');
script.textContent = actualCode; //actual code is the code you want to inject, the one that replaces the ajax methods
document.head.appendChild(script); //make sure document.head is already loaded before doing it
script.parentNode.removeChild(script); //I'm not sure why the original answer linked removes the script after that, but I kept doing it in my solution
这是至关重要的，因为扩展试图创建一个隔离的环境，而您在此环境中对 XMLHttpRequest 所做的更改根本不会参与。 （这就是为什么 JQuery.ajaxComplete 似乎不起作用的原因，您需要在页面中注入一个脚本才能使其工作 - look here）
在this pure javascript solution 中，替换方法：
//enclosing the function in parentheses to avoid conflict with vars from the page scope
(function() {
var XHR = XMLHttpRequest.prototype;
// Store the orignal methods from the request
var open = XHR.open;
var send = XHR.send;
// Create your own methods to replace those
//this custom open stores the method requested (get or post) and the url of the request
XHR.open = function(method, url) {
this._method = method; //this field was invented here
this._url = url; //this field was invented here
return open.apply(this, arguments); //calls the original method without any change
//what I did here was only to capture the method and the url information
};
//this custom send adds an event listener that fires whenever a request is complete/loaded
XHR.send = function(postData) {
//add event listener that fires when request loads
this.addEventListener('load', function() {
//what you want to do when a request is finished
//check if your element is there and readd it if necessary
//if you know the exact request url, you can put an if here, but it's not necessary
addMyElementsToPage(); //your custom function to add elements
console.log("The method called in this request was: " + this._method);
console.log("The url of this request was: " + this._url);
console.log("The data retrieved is: " + this.responseText);
});
//call the original send method without any change
//so the page can continue it's execution
return send.apply(this, arguments);
//what we did here was to insert an interceptor of the success of a request and let the request continue normally
};
})();