(function ($) { $(document).ready(function(){ if ( ! String.prototype.getDecimals ) { String.prototype.getDecimals = function() { var num = this, match = ('' + num).match(/(?:\.(\d+))?(?:[eE]([+-]?\d+))?$/); if ( ! match ) { return 0; } return Math.max( 0, ( match[1] ? match[1].length : 0 ) - ( match[2] ? +match[2] : 0 ) ); } } // Quantity 'plus' and 'minus' buttons. $( document.body ).on( 'click', '.plus, .minus', function() { var qty = $( this ).closest( '.quantity' ).find( '.qty'), currentVal = parseFloat( qty.val() ), max = parseFloat( qty.attr( 'max' ) ), min = parseFloat( qty.attr( 'min' ) ), step = qty.attr( 'step' ); // Format values. if ( ! currentVal || currentVal === '' || currentVal === 'NaN' ) currentVal = 0; if ( max === '' || max === 'NaN' ) max = ''; if ( min === '' || min === 'NaN' ) min = 0; if ( step === 'any' || step === '' || step === undefined || parseFloat( step ) === 'NaN' ) step = 1; // Change the value. if ( $( this ).is( '.plus' ) ) { if ( max && ( currentVal >= max ) ) { qty.val( max ); } else { qty.val( ( currentVal + parseFloat( step )).toFixed( step.getDecimals() ) ); } } else { if ( min && ( currentVal
<= min ) { qty.val( ); } else if ( currentval> 0 ) { qty.val( ( currentVal - parseFloat( step )).toFixed( step.getDecimals() ) ); } } // Trigger change event. qty.trigger( 'change' ); }); }); })(jQuery);