Fill input fields of another Website using JavaScript

Question

I am trying to write a script, that automatically fills two input fields of another website. I looked at the website an saw, that the two input fields have the name 'userid' and 'userpass'. I also wrote this very simple little piece of code to make it more understandable. (Lets say http://www.w3schools.com has two input fields with the names 'userid' and 'userpass')

<input type="button" value="Username" onClick="Start()" />
<input type="text" id="username" value="Username"/>
<input type="text" id="password "value="Password"/>

<script language="JavaScript">

function Start()
{
    var username = document.getElementById("username").value;
    var password = document.getElementById("password").value;;

    window.open("http://www.w3schools.com");
}

</script>

How can I pass the two variables and fill the value of them to the two input fields? Is there any possible way?

Thank you

This could be done with a chrome extension, but not XSS as @micnic said. — Gavin Hellyer
– Gavin Hellyer, Commented Oct 20, 2014 at 13:41

Community · Accepted Answer · 2017-05-23 12:00:10Z

0

See this question.

You're only able to do this if they're on the same domain (see same-origin-policy). Otherwise there's a huge security issue.

edited May 23, 2017 at 12:00

CommunityBot

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answered Oct 20, 2014 at 13:41

charles

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Comments

Douglas Franco · Accepted Answer · 2014-10-20 13:42:53Z

-1

You can load the website in an Iframe, and then access the fields that you need with something like this:

var name = $('iframe[name=select_frame]').contents().find('#select_name').val();

answered Oct 20, 2014 at 13:42

Douglas Franco

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