Refactor render function to improve readability and efficiency

Author: Darkidd77

debugging/book-library/script.js

@@ -55,53 +55,43 @@ function Book(title, author, pages, check) {
 }
 
 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);
-  }
-  //insert updated row and cells
-  let length = myLibrary.length;
-  for (let i = 0; i < length; i++) {
-    let row = table.insertRow(1);
-    let titleCell = row.insertCell(0);
-    let authorCell = row.insertCell(1);
-    let pagesCell = row.insertCell(2);
-    let wasReadCell = row.insertCell(3);
-    let deleteCell = row.insertCell(4);
+  const table = document.getElementById("display");
+  const tbody = table.querySelector("tbody");
+
+  tbody.innerHTML = "";
+
+  for (let i = 0; i < myLibrary.length; i++) {
+    const row = tbody.insertRow();
+    const titleCell = row.insertCell(0);
+    const authorCell = row.insertCell(1);
+    const pagesCell = row.insertCell(2);
+    const wasReadCell = row.insertCell(3);
+    const deleteCell = row.insertCell(4);
+
     titleCell.textContent = myLibrary[i].title;
     authorCell.textContent = myLibrary[i].author;
     pagesCell.textContent = myLibrary[i].pages;
 
-    //add and wait for action for read/unread button
-    let changeBut = document.createElement("button");
-    changeBut.id = i;
-    changeBut.className = "btn btn-success";
-    wasReadCell.appendChild(changeBut);
-    let readStatus = "";
-    if (myLibrary[i].check == true) {
-      readStatus = "Yes";
-    } else {
-      readStatus = "No";
-    }
-    changeBut.textContent = readStatus;
+    const changeBtn = document.createElement("button");
+    changeBtn.className = "btn btn-success";
+    changeBtn.textContent = myLibrary[i].check ? "Yes" : "No";
+    wasReadCell.appendChild(changeBtn);
 
-    changeBut.addEventListener("click", function () {
+    changeBtn.addEventListener("click", function () {
       myLibrary[i].check = !myLibrary[i].check;
       render();
     });
 
-    //add delete button to every row and render again
-    let delButton = document.createElement("button");
-    delButton.id = i + 5;
-    deleteCell.appendChild(delButton);
-    delButton.className = "btn btn-warning";
-    delButton.textContent = "Delete";
-    delButton.addEventListener("click", function () {
-      alert(`You've deleted title: ${myLibrary[i].title}`);
+    const deleteBtn = document.createElement("button");
+    deleteBtn.className = "btn btn-warning";
+    deleteBtn.textContent = "Delete";
+    deleteCell.appendChild(deleteBtn);
+
+    deleteBtn.addEventListener("click", function () {
+      const deletedTitle = myLibrary[i].title;
       myLibrary.splice(i, 1);
       render();
+      alert(`You've deleted title: ${deletedTitle}`);
     });
   }
 }