Tag: verify

Do you have a web-to-lead form on your website? Do you get annoyed that people can still submit the form without verifying the captcha? Sure it looks like it went through, but no record are added to Salesforce. Which is good, but if an actual user submits a form and they just forgot the captcha, it’ll look like it went through to them, but nothing is created….

A good way to approach this is disable the submit button until the captcha is verified. Great! So how do we do that?

As is the answer to most dev questions these days…… JavaScript…..

Don’t worry, it’s very little JS, and we’ll even use jQuery to make it even simpler!

First, we should know that Google gives us a callback we can hook into for the captcha called data-callback. By passing it a function, we can call that function once the captcha returns.

Next, lets disable the submit button by adding disabled="disabled". The submit button should be close to the end of the generated form code:

<input disabled="disabled" class="submit-button-captcha" type="submit" name="submit">

This is what the captcha tag will look like when Salesforce generates a web-to-lead form:

<div data-sitekey="YOUR_SITE_KEY"></div><br>

Now, we just need to add the callback to it. We’re also going to add a class to it so we can target the element in JS:

<div class="g-recaptcha" data-sitekey="YOUR_SITE_KEY" data-callback="recaptcha_check"></div><br>

So far so good! Next up is the callback function itself. It’s very simple, just grab that submit button and remove disabled:

function recaptcha_check(){
    jQuery(".submit-button-captcha").removeAttr('disabled');
}

And that’s it! That JS function can either go in your /js/scripts.js or directly after the generated form code itself with <script></script> tags.

And some quick bonus tips for styling. We can target the disabled/enabled submit button in CSS. This is good if you want to grey out the text, or remove hover animations to help drive home that it’s disabled. The next couple of snippets are for example and the important part is the selector itself so you will know how to target it.

/* 
    only when enabled, pseudo selector :enabled 
*/
form input[type=submit]:enabled {
    border: 1px solid #00b7ea;
}

/* 
    lets scale the button up a touch and play with the background
    on hover ONLY when submit is enabled 
*/
form input[type=submit]:hover:enabled {
    transform: scale(1.1);
    background: #424242;
}