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Editorial Team
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Asked: 2026-05-28T07:33:32+00:00

I’m just thinking about the whole site registration process. A user goes to your

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I’m just thinking about the whole site registration process.

A user goes to your site, signs up, and then you tell him you’ve sent him an email and he needs to verify his email address. So he hits Ctrl+T, pops open a new tab, hits his Gmail fav button, doesn’t read a word of your lengthy welcome email, but clicks the first link he sees. Gmail opens your site in yet another tab…

He doesn’t need nor want two tabs for your site open, he just wants to view that darn page you’ve disallowed him access to until he registers.

So what do we do? I saw one site (but I forget what it was) that did a really good job, and it actually refreshed the first tab I had open without me having to press anything.

I’m thinking, it might be nice if we can detect if the user already has a tab to your site open, we could either close the new verification-tab automatically, or tell him he can close it can go back to his other tab (which we’ve now refreshed and logged him in).

Or, maybe when he got your annoying “please check your email” message, he went directly to his email, replacing your site with his email knowing full well that the email will link him back to the site again. In that case, we don’t want to close the tab, but maybe could have saved his location from before, and redirect him there again?

Anyway, that’s just the use case… the question still stands. Can we detect if a user already has a tab to your site open?

This question is not about how to detect when a user has completed the sign-up process. Ajax polling or comet can solve that issue. I specifically want to know if the user already has a tab open to your site or not.

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1 Answer

  1. Editorial Team

    I’m fairly late to the party here (over a year), but I couldn’t help but notice that you’d missed an incredibly easy and elegant solution (and probably what that website you saw used).

    Using JavaScript you can change the name of the window you currently have open through:

    window.name = "myWindow";

    Then when you send out your confirmation email simply do (assuming you’re sending a HTML email):

    <a href="verificationlink.php" target="myWindow">Verify</a>

    Which should result in the verificationLink opening up inside the window your website was already loaded into, if it’s already been closed it’ll open up a new tab with the window name specified.

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