General refactor

src/javascript/index.js

@@ -26,7 +26,7 @@ setEventListeners(upload, async () => {
         const formData = new FormData();
         formData.append('file', file);
 
-        fetch('/app/upload', {
+        fetch(`${app_url}/upload`, {
             method: 'POST',
             body: formData
         }).then((response) => {
@@ -43,11 +43,11 @@ setEventListeners(upload, async () => {
 });
 
 setEventListeners(add, () => {
-    window.location.href = "/app/add";
+    window.location.href = `${app_url}/add`;
 });
 
 setEventListeners(download, () => {
-    window.location.href = "/app/download";
+    window.location.href = `${app_url}/download`;
 });
 
 setEventListeners(logout, () => {
@@ -58,6 +58,6 @@ const sql_rows = sql_table.rows;
 
 for (let i = 1; i < sql_rows.length; i++) {
     setEventListeners(sql_rows[i], () => {
-        window.location.href = `/app/edit?element=${sql_rows[i].cells[0].innerText}`;
+        window.location.href = `${app_url}/edit?element=${sql_rows[i].cells[0].innerText}`;
     });
 }