要处理AJAX内容，可以使用MutationObservers或使用计时器进行轮询。前者会变得棘手和复杂，而计时器则简单，健壮，并且对于大多数实际应用都适用。
要处理类似的属性placeholder，只需使用document.querySelectorAll("[placeholder]")获取节点并遍历生成的NodeList即可 。
当您使用它时，您可能还需要转换title属性。
简而言之：
放在一起，跨浏览器用户脚本将如下所示。查看内联注释， 您可以
// ==UserScript==
// @name Replace lots of terms on an AJAX'd page
// @include http://fiddle.jshell.net/Hp6K2/show/*
// @grant none
// ==/UserScript==
var replaceArry = [
[/text/gi, 'blather'],
[/View your user account/gi, 'Tu cuenta'],
// etc.
];
var numTerms = replaceArry.length;
//-- 5 times/second; Plenty fast.
var transTimer = setInterval (translateTermsOnPage, 222);
function translateTermsOnPage () {
/*--- Replace text on the page without busting links or javascript
functionality.
*/
var txtWalker = document.createTreeWalker (
document.body,
NodeFilter.SHOW_TEXT, {
acceptNode: function (node) {
//-- Skip whitespace-only nodes
if (node.nodeValue.trim() ) {
if (node.tmWasProcessed)
return NodeFilter.FILTER_SKIP;
else
return NodeFilter.FILTER_ACCEPT;
}
return NodeFilter.FILTER_SKIP;
}
},
false
);
var txtNode = null;
while (txtNode = txtWalker.nextNode () ) {
txtNode.nodeValue = replaceAllTerms (txtNode.nodeValue);
txtNode.tmWasProcessed = true;
}
//
//--- Now replace user-visible attributes.
//
var placeholderNodes = document.querySelectorAll ("[placeholder]");
replaceManyAttributeTexts (placeholderNodes, "placeholder");
var titleNodes = document.querySelectorAll ("[title]");
replaceManyAttributeTexts (titleNodes, "title");
}
function replaceAllTerms (oldTxt) {
for (var J = 0; J < numTerms; J++) {
oldTxt = oldTxt.replace (replaceArry[J][0], replaceArry[J][1]);
}
return oldTxt;
}
function replaceManyAttributeTexts (nodeList, attributeName) {
for (var J = nodeList.length - 1; J >= 0; --J) {
var node = nodeList[J];
var oldText = node.getAttribute (attributeName);
if (oldText) {
oldText = replaceAllTerms (oldText);
node.setAttribute (attributeName, oldText);
}
else
throw "attributeName does not match nodeList in replaceManyAttributeTexts";
}
}
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