rewrite in vanilla js

src/main.js

@@ -0,0 +1,26 @@
+const { invoke } = window.__TAURI__.core;
+
+let greetInputEl;
+let greetMsgEl;
+
+async function greet() {
+  // Learn more about Tauri commands at https://tauri.app/develop/calling-rust/
+  greetMsgEl.textContent = await invoke("greet", { name: "harald" });
+}
+
+let text = "";
+window.addEventListener("DOMContentLoaded", () => {
+  let textarea = document.getElementById('markdown_input');
+  textarea.addEventListener('input', ()=> {
+    text = textarea.value;
+    invoke("parse_markdown", { document: text }).then(
+      (ret)=>{    
+        var tag_id = document.getElementById('rendered_markdown');
+        tag_id.innerHTML = ret;
+      }
+    );
+
+  });
+});
+var x = document.createElement("INPUT");
+x.setAttribute("type", "text");