checkout.js
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jQuery( window ).load( function() {
var windowHeight = jQuery( window ).height();
var paymentHeight = jQuery( '#order_review' ).height();
/**
* Make the order review element stick to the top of the browser window.
*/
function stickyPayment() {
var topDistance = jQuery( document ).scrollTop();
var paymentWidth = jQuery( '#order_review_heading' ).outerWidth();
var checkoutWidth = jQuery( 'form.woocommerce-checkout' ).outerWidth();
var addressWidth = jQuery( '#customer_details' ).outerWidth();
var gutter = checkoutWidth - addressWidth - paymentWidth;
var paymentOffset = addressWidth + gutter;
var checkoutPosition = jQuery( 'form.woocommerce-checkout' ).offset();
// If we're in desktop orientation...
if ( jQuery( window ).width() > 768 ) {
// When we reach the order review element during scroll...
if ( topDistance > checkoutPosition.top ) {
jQuery( '#order_review' ).addClass( 'payment-fixed' );
jQuery( '#order_review' ).css({
'margin-left': paymentOffset,
'width': paymentWidth
});
} else {
jQuery( '#order_review' ).removeAttr( 'style' ).removeClass( 'payment-fixed' );
}
} else {
jQuery( '#order_review' ).removeAttr( 'style' ).removeClass( 'payment-fixed' );
}
}
// Only execute the sticky function if the window is large enough to accomodate the order review element
// Otherwise the 'place order' button could be off the bottom of the window and completely inaccessible.
// Figure out which payment method has the largest payment box
var tallestPaymentBox = -1;
jQuery( '.payment_box' ).each( function() {
tallestPaymentBox = tallestPaymentBox > jQuery( this ).outerHeight() ? tallestPaymentBox : jQuery( this ).outerHeight();
});
// Figure out the height of the current payment box
var currentPaymentBox = jQuery( '.wc_payment_method input:checked' ).siblings( '.payment_box' ).outerHeight();
if ( windowHeight > paymentHeight + ( tallestPaymentBox - currentPaymentBox + 30 ) ) {
// Do sticky on scroll
jQuery( window ).scroll( function() {
stickyPayment();
});
// Do sticky on window resize
jQuery( window ).resize( function() {
stickyPayment();
});
}
});