Hugh Lashbrooke

“WooCommerce Email Validation” is an extension for WooCommerce that adds a ‘confirm email address’ field to the checkout page as a required field. This will ensure that your customers will enter a correct email address, making managing your orders far easier and more reliable. If a customer’s email address does not match up then they will receive a standard validation error on the checkout page informing them that they need to make sure that their email addresses are the same.
This extension is WooCommerce 3.x compatible and supports localisation using WPML. It has built-in translations for English, German, Spanish, Dutch, Swedish, Japanese, Polish, Brazilian Portuguese, Hungarian and Serbian.
Want to contribute? <a href="https://github.com/hlashbrooke/Woocommerce-Email-Validation" rel="nofollow ugc">Fork the GitHub repository</a>.
<h3>Usage</h3>
Simply upload the plugin and you’re good to go. There are no options to configure – the extension just works.

WooCommerce Email Validation

Adds a 'confirm email address' field to the WooCommerce checkout page.

joern.zaefferer

Ever got annoyed when submitting a comment on a wordpress blog and just getting a blank page with a error message like “please fill out required fields” and nothing else? This plugin aims to help by adding validation to the comment form. When a user submits the form and something is missing, an appropiate message is displayed and individual fields are highlighted. When the email or url is in an incorrect format, a message is displayed accordingly.
Why should you install it? Because you care for comments and want to help users reduce mistakes that hold them off from commenting at all.
Whats the technology used? <a href="http://jquery.com" rel="nofollow ugc">jQuery</a> and the <a href="http://bassistance.de/jquery-plugins/jquery-plugin-validation/" rel="nofollow ugc">jQuery Validation plugin</a> with a few customizations to make it fit into the standard WordPress theme.
Is it compatible with other plugins? The plugin is tested with the <a href="https://wordpress.org/extend/plugins/draw-comments/" rel="ugc">Draw Comments</a> plugin and works, though the performance is slightly degraded. Other plugins haven’t yet been tested.

Comment Validation

This plugin adds client-side validation to the Wordpress comment form, using the jQuery validation plugin.

WooCommerce Email Validation vs Comment Validation