add language selector to form

ts/form.ts

@@ -1,5 +1,5 @@
 import { Modal } from "./modules/modal.js";
-import { _post, toggleLoader } from "./modules/common.js";
+import { _get, _post, toggleLoader } from "./modules/common.js";
 
 interface formWindow extends Window {
     validationStrings: pwValStrings;
@@ -21,6 +21,24 @@ interface pwValStrings {
     [ type: string ]: pwValString;
 }
 
+_get("/lang", null, (req: XMLHttpRequest) => {
+    if (req.readyState == 4) {
+        if (req.status != 200) {
+            document.getElementById("lang-dropdown").remove();
+            return;
+        }
+        const list = document.getElementById("lang-list") as HTMLDivElement;
+        let innerHTML = '';
+        for (let code in req.response) {
+            innerHTML += `<a href="?lang=${code}" class="button input ~neutral field mb-half">${req.response[code]}</a>`;
+        }
+        list.innerHTML = innerHTML;
+    }
+});
+
+
+
+
 window.modal = new Modal(document.getElementById("modal-success"));
 declare var window: formWindow;