在我的Greasemonkey脚本/ Tampermonkey在Google Chrome中完美运行,但在Firefox中:
waitForKeyElements ("table#ID-rowTable tr td span._GAmD", replaceAffid);
不等待加载AJAX的内容。
以下是我的脚本的相关部分:
// ==UserScript==
// @name ChangeProvider
// @description Change Provider Name
// @include https://analytics.google.com/analytics/web/*
// @version 1
// @grant GM_xmlhttpRequest
// ==/UserScript==
<snip>...
waitForKeyElements ("table#ID-rowTable tr td span._GAmD", replaceAffid);
<snip>...
function waitForKeyElements (
selectorTxt, /* Required: The jQuery selector string that
specifies the desired element(s).
*/
actionFunction, /* Required: The code to run when elements are
found. It is passed a jNode to the matched
element.
*/
bWaitOnce, /* Optional: If false, will continue to scan for
new elements even after the first match is
found.
*/
iframeSelector /* Optional: If set, identifies the iframe to
search.
*/
) {
var targetNodes, btargetsFound;
if (typeof iframeSelector == "undefined")
targetNodes = $(selectorTxt);
else
targetNodes = $(iframeSelector).contents ()
.find (selectorTxt);
<snip>...
答案 0 :(得分:1)
问题是:
waitForKeyElements()
需要jQuery。
脚本必须 提供jQuery(推荐),或使用@grant none
模式并在已使用jQuery的页面上运行(a脆弱的做事方式,AKA“定时炸弹代码”)。
Tampermonkey有一个错误和可能的安全漏洞,因此它并不总是
沙箱正常。这意味着脚本可以(有时)看到页面的jQuery,即使@grant
不是none.
这也允许脚本在Chrome中运行(现在)但是依赖它是非常冒险的事情。
@grant GM_ ...
时Firefox正确沙箱范围,因此脚本无法看到该网页的jQuery。
如果您有looked at Firefox's Browser Console,则会看到错误消息指出您的问题。
解决方案是:在没有@require
jQuery的情况下不要使用waitForKeyElements!
实际上,您应该同时需要两个库as shown in this answer,因为它(A)运行速度更快,(B)仅在安装/编辑用户脚本时获取一次代码,而(C)使得更清晰,更容易格罗克代码。
因此,您的整个脚本将变为:
// ==UserScript==
// @name GoogleAnalytics Change Provider
// @description Change Provider Name
// @include https://analytics.google.com/analytics/web/*
// @version 1
// @require http://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js
// @require https://gist.github.com/raw/2625891/waitForKeyElements.js
// @grant GM_xmlhttpRequest
// ==/UserScript==
var providers = new Array ();
GM_xmlhttpRequest ( {
method: "GET",
url: "http://localhost:3000/api/t2_provider_list",
onload: function (response) {
var provider_list = JSON.parse (response.responseText);
for (i = 0; i < provider_list.length; i++) {
providers[provider_list[i].analytics_prefix] = provider_list[i].provider_name;
}
waitForKeyElements ("table#ID-rowTable tr td span._GAmD", replaceAffid);
}
} );
/*--- replaceAffid (): Match the fields with a given pattern
and replace with the provider name and affid
*/
function replaceAffid () {
console.log (providers);
var regExp = /([a-z,A-Z,0-9]+)---([a-z,A-Z,0-9,_,-]+)/g;
var spans = document.evaluate ("//span[contains(@class, '_GAmD') and not(contains(@class, '_GAe'))]/text()", document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
console.log (spans);
for (var i = 0; i < spans.snapshotLength; i++) {
match = regExp.exec (spans.snapshotItem (i).textContent);
if (match != null) {
if (typeof providers[match[1]] === undefined) {
// do nothing
} else {
spans.snapshotItem (i).textContent = "Provider: " + providers[match[1]] + " \n\r Affid: " + match[2];
}
}
}
}
最后,它看起来像是粘贴在旧版本的waitForKeyElements中 Since May of 2012,该函数的文本接近顶部:
重要说明:此函数要求您的脚本加载jQuery。
如果您从one of my old answers抓取了该功能的副本,我道歉。我刚刚更新它以避免重复这种混乱。