document.addEventListener('DOMContentLoaded', function () {
    checkErrors();
}, false);

function checkErrors() {
    if (isFormSubmitted()) {
        showErrors();
    }
}

function isFormSubmitted() {
    return window.location.href[window.location.href.length - 1] == "#";
}

function showErrors() {
    x = document.getElementsByClassName('error');
    for (let i = 0; i < x.length; i++) {
        x[i].style.display = 'block';
    }
}