https://filsam.sm/wp-content/themes/azuri/js/wc-quantity-increment.js?ver=20150330

1(function($) {
2    "use strict";
3    
4    if ( ! String.prototype.getDecimals ) {
5		String.prototype.getDecimals = function() {
6			var num = this,
7				match = ('' + num).match(/(?:\.(\d+))?(?:[eE]([+-]?\d+))?$/);
8			if ( ! match ) {
9				return 0;
10			}
11			return Math.max( 0, ( match[1] ? match[1].length : 0 ) - ( match[2] ? +match[2] : 0 ) );
12		}
13	}
14
15    $.extend($.goalThemeCore, {
16        /**
17         *  Initialize scripts
18         */
19        qty_init: function() {
20            var self = this;
21
22            $( document ).on( 'updated_wc_div', function() {
23				self.refresh_quantity_increments();
24			} );
25
26			$( document.body ).on( 'cart_page_refreshed', function() {
27				self.refresh_quantity_increments();
28			});
29
30			self.refresh_quantity_increments();
31
32			self.qty_action();
33        },
34        qty_action: function() {
35        	$( document ).on( 'click', '.plus, .minus', function() {
36				// Get values
37				var $qty		= $( this ).closest( '.quantity' ).find( '.qty'),
38					currentVal	= parseFloat( $qty.val() ),
39					max			= parseFloat( $qty.attr( 'max' ) ),
40					min			= parseFloat( $qty.attr( 'min' ) ),
41					step		= $qty.attr( 'step' );
42
43				// Format values
44				if ( ! currentVal || currentVal === '' || currentVal === 'NaN' ) currentVal = 0;
45				if ( max === '' || max === 'NaN' ) max = '';
46				if ( min === '' || min === 'NaN' ) min = 0;
47				if ( step === 'any' || step === '' || step === undefined || parseFloat( step ) === 'NaN' ) step = 1;
48
49				// Change the value
50				if ( $( this ).is( '.plus' ) ) {
51					if ( max && ( currentVal >= max ) ) {
52						$qty.val( max );
53					} else {
54						$qty.val( ( currentVal + parseFloat( step )).toFixed( step.getDecimals() ) );
55					}
56				} else {
57					if ( min && ( currentVal <= min ) ) {
58						$qty.val( min );
59					} else if ( currentVal > 0 ) {
60						$qty.val( ( currentVal - parseFloat( step )).toFixed( step.getDecimals() ) );
61					}
62				}
63
64				// Trigger change event
65				$qty.trigger( 'change' );
66			});
67        },
68        refresh_quantity_increments: function () {
69        	$( 'div.quantity:not(.buttons_added), td.quantity:not(.buttons_added)' ).addClass( 'buttons_added' ).append( '<input type="button" value="+" class="plus" />' ).prepend( '<input type="button" value="-" class="minus" />' );
70        }
71    });
72
73    $.goalThemeExtensions.quantity_increment = $.goalThemeCore.qty_init;
74})(jQuery);