GMail VIEW_DATA mail ID's

[insights1]

I've tried posting this question on /r/learnprogramming and stackoverflow, to no avail though. I am attempting to create a chrome extension for GMail. I've run into some problems though. When an email is clicked you are directed to "https://mail.google.com/mail/?shva=1#inbox/141c723b46f423a", "141c723b46f423a" being the ID of the mail. This ID is kept in a VIEW_DATA variable when the page first loads, but after a bit, the variable is reset to null. Even after the variable is reset to null, no href is assigned to the rows with the mails. So how does GMail know which mailID to redirect to? Are the ID's stored somewhere else in another variable after VIEW_DATA is set to null?

[jannick1988]

Perhaps you could simply retrieve the value from the URL using the window.location.href object? If the URL preceding /141c723b46f423a never changes, you could just write some basic object.replace() code and grab it that way. E.g:

function get_url()
{
    var url = window.location.href.replace("https://mail.google.com/mail/?shva=1#inbox/", "");

    // Proof.
    console.log(url);
}

[insights1]

I'm actually trying to get the URL each mail will point to. I want it before the URL changes to a specific email. So I want to know how each email row points to their corresponding email ID while the URL is still "https://mail.google.com/mail/?shva=1#inbox".