Detect Google Maps API quota limit

Question

Does anyone know a way to test via Javascript or a HTTP-Request, if the quota of Google Maps Javascript API V3 is reached? Getting the error-message, which is displayed for

Answer 1

I came up with a solution based on the observation that the Google error message contains an element with the dismissButton class attribute. With jQuery, it is something like

var quota_exceeded = false;
$(document).ready( function() {
    setTimeout(check_quota, 1000);
    setTimeout(check_quota, 3000);
    setTimeout(check_quota, 10000);
});
function check_quota() {
    if (quota_exceeded) return;
    if (typeof($("button.dismissButton")[0]) === "undefined") return;
    quota_exceeded = true;
    // you can even hijack the box and add to Google's message
    $("button.dismissButton").parents("td").html(
        "We have exceeded our quota!!!!!
" +
        "" +
        "
OK");
    $("button.dismissButton").click( function() {
        $("button.dismissButton").parentsUntil("div").parent().hide();
    });
}