This page addresses one of the less common, but still quite annoying problems, double-clickers.
A quick double-click on a button or link can have unintended consequences, such as a form being submitted twice, or a script running in parallel to itself and encountering race conditions.
In this example, you can click the first button as many times as you want.
In practice this can cause a form to be submitted, or some other event triggered, more than once.
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Description: A script that closely examines the content of a form box to ensure that the user entered a valid email address.
This is especially true for email addresses where the sheer quantity of address syntax permutations, allowed characters, new can make validating any given email address particularly challenging.
With our Real-Time Email Validation service you can easily clean up existing email lists or verify if an email address entered into a registration form on your website really exists and can receive mails.
For each email address you get a detailed validation result with the exact deliverability status.
With our real-time online API you can validate email addresses right at the point of entry.
The second button however will only accept a single click and ignore all subsequent clicks.
The trick is to use Java Script to set the in a text input field - the submit button will be disabled to prevent double-clicking.
The project can be found on Git Hub where you can also find our issue tracker.