Member Avatar for Cody39E

Hello friends,

i want to know how to modify the typed url in the browser applications such as Mozilla or IE.I m currently going through Mozilla Source Code.If possible please help me guys.
Thank You!

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Short, practical guidance for (and follow-up, ): whether the typed URL can be changed depends on timing. Browsers do not permit extensions to rewrite what a user is actively typing in the location bar for privacy/security reasons. Extensions can reliably either intercept navigations and redirect them, or offer an alternate input path (the omnibox). For already-loaded pages a content script can set location.href to navigate, but it cannot edit the address-bar text while the user is typing.

For Firefox and many cross-browser WebExtensions, the supported approach is the webRequest API with blocking listeners in a background script; the extension manifest must request webRequest, webRequestBlocking and appropriate host permissions. A minimal listener looks like this:

browser.webRequest.onBeforeRequest.addListener(
  function(details) {
    if (details.url.indexOf("pattern-you-want") !== -1) {
      return { redirectUrl: "https://your-target.example/" };
    }
  },
  { urls: ["<all_urls>"] },
  ["blocking"]
);

Chrome (Manifest V3) and Chromium-based Edge changed the model: webRequest can be observed but blocking redirects are replaced by the declarativeNetRequest API, so rule-based redirects must be expressed via that API. Legacy Internet Explorer used BHOs (COM), intercepting events such as OnBeforeNavigate2, but IE is deprecated and BHOs require native/COM code and registry deployment. See MDN for WebExtensions and webRequest details and Chrome's declarativeNetRequest docs for MV3 specifics: MDN WebExtensions, MDN webRequest API, Chrome declarativeNetRequest.

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Member Avatar for adam1122

We need more info.

Are you trying to write a plugin?
Are you writing an external application that will redirect an already running browser instance to another page?

Member Avatar for Cody39E

Yes its a plugin.

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