Quantity

html

<label for="Quantity">Quantity</label>
 <div class="product-quantity product-single__quantity {% unless section.settings.product_quantity_enable %} is-hidden{% endunless %}">
                <input value="-" class="qtyminus" field="Quantity" type="button">
                <input id="Quantity" name="quantity" value="1" min="1" max="10" data-product-qty="" class="cart__quantity-selector quantity-selector" type="text">
                <input value="+" class="qtyplus" field="Quantity" type="button">
   </div>

plus minus

		$(".qtyminus").on("click",function() {
			var input = $(this).siblings(".cart__quantity-selector"),
				qty = parseInt(input.val(),10);

			if(qty > 1){
				input.val(qty - 1)
			}

		});

		$(".qtyplus").on("click",function() {
			var input = $(this).siblings(".cart__quantity-selector"),
				qty = parseInt(input.val(),10);

				input.val(qty + 1)

		});