Script to automatically submit form in any browser

Question

Note: I could not think words for this question to search in Google. That's why asking my question. Please bear with me.

I have internet subscription of xyz company and it's login based connection. But what happens is that sometimes login screen reappears and is asking for password. I have already stored user name and password in web page but I have to click on login button to relogin again.

Can I have any script written for this login page that whenever internet connection goes and asks for relogin again, script automatically submit form and get connected with internet?

Answer 1

You're looking for content scripts. There is no cross-browser way to inject code into a web page, but each major browser has a well documented way to do it:

• Firefox
• Chrome
• Internet Explorer

Technically you could also write a script that sniffs HTTP requests using a tool like Wireshark and posts form data whenever it detects the page is displayed, but that doesn't seem like a great solution.