Disable text entry of quantity input box

[Picklehead]

HI,
As the title does anyone know of an effective way to disable text entry of the quantity input box on product details and cart. Input box must remain to display results of + and - buttons

Thanks!

Joomla! 3.10.11 & VirtueMart 3.8.7

[GJC Web Design]

<input type="text" class="quantity-input js-recalculate" name="quantity[]"
               data-errStr="<?php echo vmText::_ ('COM_VIRTUEMART_WRONG_AMOUNT_ADDED')?>"
               value="<?php echo $init; ?>" init="<?php echo $init; ?>" step="<?php echo $step; ?>" <?php echo $maxOrder; ?>  readonly />


templates\YOURS\html\com_virtuemart\sublayouts\addtocartbar.php