in source/web_site/js/dash.js [508:526]
$("#btnSaveConfiguration").click(function (e) {
var clientId = $("#clientId").val(),
userPoolId = $("#userPoolId").val(),
identityPoolId = $("#identityPoolId").val(),
userPoolRegion = $("#userPoolRegion").val();
if (clientId && userPoolId && identityPoolId && userPoolRegion) {
$("#configErr").addClass("hidden");
localStorage.setItem(clientIdParamName, clientId);
localStorage.setItem(userPoolIdParamName, userPoolId);
localStorage.setItem(identityPoolIdParamName, identityPoolId);
localStorage.setItem(cognitoRegionParamName, userPoolRegion);
$("#cognitoModal").modal("hide");
}
else {
$("#configErr").removeClass("hidden");
}
});