chrome extension remove script tags

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i looked everywhere trying to find an answer to this question. i want my extension to either disable all javascript on the page BUT to allow the insertion of a cotent script th

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遇见更好的自我

2021-02-10 11:29
Well, the only way to truly prevent scripts is with contentSettings. So you need to put your code somewhere else, in another domain, since contentSettings rules can be applied for specific URL's.

Put you content script to run at document start.

contentScript.js:
```
window.stop();
document.all[0].innerHTML = "\
<html>\
    <body>\
        <iframe src=\"chrome-extension://ID/inject.html?url="+encodeURIComponent(location.href)+"\"></iframe>\
    </body>\
</html>";
```
inject.html:
```
<html>
<head>
<script>
    var frame = document.querySelector('iframe');
    frame.src = location.search.replace('?url=', '');
    frame.onload = function() {
        //Your stuff here
    }
</script>
</head>
<body>
    <iframe></iframe>
</body>
<html>
```
Now your code is in a parent frame and in another domain, but it may cause some CORS issues which you can try found some workarounds later. Give a try, then tell me if there's something to fix.
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执念已碎

2021-02-10 11:32

After seeing your comments I think this might suite your needs. It works by getting the pages source, render it to a dom, disable all the js and then put it back into the page. Not exactly what you wanted but should suite your case well...

mainfest.json

{
  "name": "Reload and Kill JS - Using a content script",
  "version": "1.0",
  "permissions": [
    "tabs", "<all_urls>" , "storage"
  ],
  "background": {
    "scripts": ["background.js"]
  },
   "content_scripts": [
    {
      "matches": ["<all_urls>"],
      "js": ["injectedCode.js"],
      "run_at" : "document_start"
    }
  ],
  "minimum_chrome_version" : "20",
  "manifest_version" : 2
}

background.js

chrome.storage.local.set({"blockhttp://paez.kodingen.com/":true});

injectedCode.js

reloadAndKillJS = function() {
    document.documentElement.innerHTML = 'Reloading Page...';

    var xhr = new XMLHttpRequest();

    xhr.open('GET', window.location.href, true);

    xhr.onerror = function() {
        document.documentElement.innerHTML = 'Error getting Page';
    }

    xhr.onload = function() {
        var page = document.implementation.createHTMLDocument("");
        page.documentElement.innerHTML = this.responseText;

        var newPage = document.importNode(page.documentElement, true);

        var nodeList = newPage.querySelectorAll('script');
        for (var i = 0; i < nodeList.length; ++i) {
            var node = nodeList[i];
            if (node.src) {
                node.setAttribute('original-src', node.src);
                node.removeAttribute('src');
            }
            node.innerText = '';
        }

        document.replaceChild(newPage, document.documentElement);
        delete page;

        // Do your thing here
    }

    xhr.send();
}

chrome.storage.local.get("block"+window.location.href,function(items){
    if (items["block"+window.location.href]){
    window.stop();
    reloadAndKillJS();  
    }
});

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