gostfix/web/js/notifications.js

const Severity = {
    Normal: 1,
    Warning: 2,
    Critical: 3,
}

function showToast(severity, text) {
    var toast = $('#toast')
    if (!toast.length) {
        $('body').append('<div id="toast" class="toast hidden"></div>')
        toast = $('#toast')
    }

    toast.text(text)

    toast.removeClass("normal")
    toast.removeClass("warning")
    toast.removeClass("critical")

    switch(severity) {
        case Severity.Warning:
            toast.addClass("warning")
            break
        case Severity.Critical:
            toast.addClass("critical")
            break
        case Severity.Normal:
        default:
            toast.addClass("normal")
            break
    }


    toast.removeClass("hidden")
    toast.addClass("visible")
    setTimeout(function() {
        toast.removeClass("visible")
        toast.addClass("hidden")
    }, 2000)
}