A script to disable Salsa's welcome back message. The supporter is logged out of the current page and returned to the same page. A flag is placed into session storage that this script doesn't loop forever. The script ignores pages that are part of a workflow or that have a displayed error.

disable_welcome_back.html

<script type="text/javascript">
    // Automatically log supporters out of Salsa pages, effectively disabling the
    // Welcome Back Message. See https://help.salsalabs.com/hc/en-us/articles/223344487

    // This script will not run if Salsa's returned an error.
    if (document.querySelector('.error') == null) {
        if (typeof window.sessionStorage.redirected == "string") {
            delete window.sessionStorage.redirected;
        } else {
            var notThese = ['event/common.+checkout.sjs', 'guestReg', 'receipt.sjs',
                'shop/index.jsp', 'shop/viewCart.jsp', 'shop/checkOut.jsp', 'shop/item.jsp',
                'Tellafriend.sjs', 'login.jsp'
            ];
            var notTester = function (n) {
                return RegExp(n).test(window.location.href);
            }
            if (!notThese.some(notTester)) {
                window.sessionStorage.redirected = 'true';
                window.location = "/dia/logout.jsp?killorg=" + <?= salsa.organization_KEY ?>;
            }
        }
    }
</script>

Hey, all! This version of the Welcome Back disabler doesn't need "&okay=true". It also works correctly on donation pages that have user or submission errors. Replace your current script with this one! Be happier!