Chrome extension causes problems with jquery and javascript on some pages - google-chrome

Question

I have a small chrome extension which I want to use to change text. It works just the way I want it to(clicking the icon changes text), but on some pages the existing jquery stops working when the app is enabled. What am I doing wrong?
Files: manifest.json, myscript.js and background.html
manifest.json content:
{
"name": "My extension",
"version": "1.0",
"background_page": "background.html",
"permissions": [
"tabs", "http://*/*"
],
"content_scripts": [
{
"matches": ["http://*/*"],
"matches": ["https://*/*"],
"js": ["myscript.js"]
}
],
"browser_action": {
"default_icon": "icon.png"
}
}
myscript.js content:
var array = {"not":" NOT ", "like":" LIKE ", "job":"JOBS"}
for (var val in array)
document.body.innerHTML = document.body.innerHTML.replace(new RegExp(val, "g"), array[val]);
background.html content:
<script>
chrome.browserAction.onClicked.addListener(function(tab) {
chrome.tabs.executeScript(null,
{file:"myscript.js"});
});
</script>

Answer 1

document.body.innerHTML is very bad.
When you use it, you're treating DOM nodes as raw text. Those DOM nodes have event handlers and even a simple document.body.innerHTML+='...' will send the existing nodes to oblivion, creating new ones, without event handlers.
So instead, you need to iterate through all the text nodes in the document (*see here how) and do an innerHTML each one individually.
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