const sourceForm = document.querySelector("form[name=update_source]");
const passwordForm = document.querySelector("form[name=change_password]");
const userAddForm = document.querySelector("form[name=add_user]");

sourceForm.onsubmit = function (e) {
    e.preventDefault();

    let isValid = true;
    let issueMsg = this.querySelector("#url_issue");

    issueMsg.classList.remove("shown");
       this.elements['ade_url'].classList.remove("invalid");

    let urlRe = /https:\/\/adecons\.unistra\.fr.*/;
    
    if (!urlRe.test(this.elements['ade_url']))
    {
        isValid = false;
        issueMsg.classList.add("shown");
        this.elements['ade_url'].classList.add("invalid");
    }
}