DjZoNe

More than that, it checks if all fields filled correctly, and also makes sure to avoid comment duplication, and has flood protection capabilities as well.
Probably one of the best ways you could spice up your WordPress Blog with AJAX; readers love it! Must see for yourself.
This plugin works well in all major Web browsers, and uses discrete AJAX. 
That means if JavaScript disabled, it’s using the original comment posting method.
Ajax Comments known to work well, with Authimage plugin, but I rather suggest Akismet, as it is free for personal use.
Features:
<pre><code>* comment form validation happens server-side without refreshing or leaving the page
* Script.aculo.us Fade In/Out Effects make readers happy
* works with AuthImage captcha word verification plug-in to prevent comment spam
* still works traditionally if browsers don't support JavaScript (or have it disabled)
* uses existing theme code to match styled comment threads when producing new comments
* 25-second server timeout ensures readers aren't left hanging
* works in current versions of Firefox, Internet Explorer, Opera, Netscape, and Safari.
</code></pre>
Recommendations:
<pre><code>* perfectly compliments any well-styled comment form design-don't design without it
* best when moderation is off (seems more real-time) and AuthImage is installed (self-moderation is the best moderation)
</code></pre>
<h3>Known bug</h3>
I’ve discovered that AJAX Comments 2.0 stops working properly if you 
have ShowOnFrontPage plugin (v0.3.1) installed.
And we got another report, that it also stops, when you have SpamKarma activated.
We are working on a solution.
<h3>AuthImage Integration</h3>
<ol>
<li>Open ajax-comments.php and uncomment lines: 92, 152, 153.</li>
<li>
Open comments.php from your /themes directory and use the following code (mostly just the ids) for AuthImage to appear in your comments form:
<pre><code> <?php if ( !$user_ID ) : ?>

 <img id="auth-image" src="<?php echo get_option('siteurl'); ?>/wp-content/plugins/authimage/authimage-inc/image.veriword.php" alt="Verification Image" />
 <label for="code">Word Verification (<a href="#" onclick="document.getElementById('auth-image').src+='?'+Math.random();return false" title="Generate another Captcha Word Verification image.">can't read it? try another!</a>)</label>
 Please type the letters you see in the picture.
 <input name="code" id="code" type="text" class="text" tabindex="5" />

 <?php endif; ?>
</code></pre>
</li>
</ol>

AJAX Comments

Post comments quickly without leaving or refreshing the page.

moiseh

WooCommerce AJAX Cart is a WordPress Plugin that changes the default behavior of WooCommerte Cart Page, allowing a buyer to see the Total price calculation when change the Quantity of a product, without need to manually click on “Update cart” button.
This improves the user experience when purchasing a product. No other hacks/code/theme changes is needed, this functionality is added when the plugin is activated.
You can try and play with this plugin demonstration <a href="https://tastewp.com/new?pre-installed-plugin-slug=woocommerce%2Cwoocommerce-ajax-cart&redirect=plugins.php&ni=true" rel="nofollow ugc">clicking here</a>
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/nXUjO2cGljs?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
Free version features:
<ul>
<li>Automatically reload and recalculate Cart using AJAX when quantity changes</li>
<li>Show -/+ buttons around item quantity on cart page</li>
<li>Show item quantity as select instead numeric field</li>
<li>Show user confirmation when change item quantity to zero</li>
</ul>
Premium version features:
<ul>
<li>Allow to change/synchronize quantities in shop, minicart and single product pages <a href="https://youtu.be/a4w8wNlZhxk" rel="nofollow ugc">view demo</a></li>
<li>Make the <code>Add to cart</code> button to perform with AJAX, without full page reload <a href="https://youtu.be/o0VPfMCIctc" rel="nofollow ugc">view demo</a></li>
<li>Faster AJAX reload call when change quantities in Cart page</li>
<li>Option to lock quantity inputs to allow only change using plus and minus buttons</li>
<li>Update price vs quantity calculation automatically on Single Product pages</li>
</ul>
If you looking for a related plugin with more complete features maybe you can try <a href="https://wordpress.org/plugins/woo-better-usability" rel="ugc">WooCommerce Better Usability</a> plugin.

WooCommerce Ajax Cart Plugin

WooCommerce AJAX Cart is a WordPress Plugin that changes the default behavior of WooCommerte Cart Page, allowing a buyer to see the Total price calcul …

AJAX Comments vs WooCommerce Ajax Cart Plugin