made some changes

Author: Fithi-Teklom

debugging/book-library/script.js

@@ -64,9 +64,9 @@ function render() {
   let table = document.getElementById("display");
   let rowsNumber = table.rows.length;
   //delete old table
-  for (let n = rowsNumber - 1; n > 0; n-- ) {
-    table.deleteRow(n);
-  }
+  const tbody = table.querySelector("tbody");
+  tbody.innerHTML = "";
+
   //insert updated row and cells
   let length = myLibrary.length;
   for (let i = 0; i < length; i++) {