wooassist

This plugin displays the quantity field on the shop page of WooCommerce stores so customers can change the quantity before adding to cart.

Quantity Field on Shop Page for WooCommerce

This plugin displays the quantity field on the shop page of WooCommerce stores so customers can change the quantity before adding to cart.

Nick Verwymeren

WooCommerce uses number inputs for the cart quantities by default, as most browsers now support <code><input type="number" /></code>.
However, you may want to have JavaScript powered inputs if you want greater control over appearance. Simply install and activate this plugin to do so.
It optionally includes a <a href="https://github.com/jonstipe/number-polyfill" rel="nofollow ugc">Number Polyfill</a>, which is a polyfill for implementing the HTML5 <code><input type="number"></code> element in browsers that do not currently support it.
To include this, add the following code to your theme’s <code>functions.php</code> file:
<pre><code>add_action( 'wp_enqueue_scripts', 'wcqi_enqueue_polyfill' );
function wcqi_enqueue_polyfill() {
 wp_enqueue_script( 'wcqi-number-polyfill' );
}
</code></pre>

WooCommerce Quantity Increment

WooCommerce Quantity Increment adds JavaScript powered quantity buttons to your cart page.

Quantity Field on Shop Page for WooCommerce vs WooCommerce Quantity Increment