javascript 查找和替换字符串
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/5951801/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
find and replace string
提问by sarsar
Is it possible to look at a page's source code, find a certain part and replace it with something else before the page loads? I would like to accomplish this using JavaScript so that I can use it in a Chrome extension. So something like this:
是否可以查看页面的源代码，找到某个部分并在页面加载之前将其替换为其他内容？我想使用 JavaScript 完成此操作，以便我可以在 Chrome 扩展程序中使用它。所以像这样：
Find the google.com
找到 google.com
<script type="text/javascript">
var URLgo = "http://google.com";
</script>
Replace with yahoo.com
替换为 yahoo.com
<script type="text/javascript">
var URLgo = "http://yahoo.com";
</script>
采纳答案by Pete Hamilton
<script type="text/javascript">
function replaceScript() {
var toReplace = 'http://google.com';
var replaceWith ='http://yahoo.com';
document.body.innerHTML = document.body.innerHTML.replace(toReplace, replaceWith);
}
</script>
Then initialise in the body tag to do on page load.
然后在 body 标签中初始化以在页面加载时执行。
<body onload="replaceScript();">
Should work fine and replace all instances in html body code.
应该可以正常工作并替换 html 正文代码中的所有实例。
If it is in an iframe with id "external_iframe" then you would modify document.body.innerHTML to be:
如果它在 ID 为“external_iframe”的 iframe 中，那么您可以将 document.body.innerHTML 修改为：
window.frames['external_iframe'].document.body.innerHTML
Although I'm not convinced you can use it for an external site.
尽管我不相信您可以将其用于外部站点。
Seems to be some info here: Javascript Iframe innerHTML
这里似乎有一些信息：Javascript Iframe innerHTML
