this should be it

Author: mjm-git185

debugging/book-library/index.html

@@ -2,17 +2,15 @@
 <html lang="en">
   <head>
     <title>Library Books</title>
-    <meta
-      charset="utf-8"
-    >
+    <meta charset="utf-8" />
     <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
     <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>
     <link
       rel="stylesheet"
       href="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css"
-    >
-    <link rel="stylesheet" type="text/css" href="style.css">
+    />
+    <link rel="stylesheet" type="text/css" href="style.css" />
   </head>
 
   <body>
@@ -35,7 +33,7 @@ <h1>Library</h1>
           name="title"
           placeholder="Title"
           required
-        >
+        />
         <label for="author">Author: </label>
         <input
           type="text"
@@ -44,31 +42,32 @@ <h1>Library</h1>
           name="author"
           placeholder="Author"
           required
-        >
+        />
         <label for="pages">Pages:</label>
         <input
           type="number"
           class="form-control"
           id="pages"
           name="pages"
           placeholder="Between 1 and 16000"
+          min="1"
           max="16000"
           required
-        >
+        />
         <label class="form-check-label">
           <input
             type="checkbox"
             class="form-check-input"
             id="check"
             value=""
-          >Read
+          />Read
         </label>
         <input
           type="submit"
           value="Submit"
           class="btn btn-primary"
           onclick="submit();"
-        >
+        />
       </div>
     </div>
 
@@ -93,6 +92,6 @@ <h1>Library</h1>
       </tbody>
     </table>
 
-    <script src="script.js" ></script>
+    <script src="script.js"></script>
   </body>
 </html>

debugging/book-library/script.js

@@ -23,14 +23,15 @@ function populateStorage() {
 //via Book function and start render function
 
 function submit() {
-  const titleInput = document.getElementById("title").value.trimStart();
+  const titleInput = document.getElementById("title").value.trim();
   const authorInput = document.getElementById("author").value.trimStart();
-  const pagesInput = document.getElementById("pages").value;
+  const pagesInput = Number(document.getElementById("pages").value);
   const checkInput = document.getElementById("check").checked;
   if (
     titleInput == "" ||
     pagesInput == "" ||
     authorInput == "" ||
+    pagesInput == NaN ||
     pagesInput < 1 ||
     pagesInput > 16000
   ) {
@@ -92,9 +93,11 @@ function render() {
     button.className = "btn btn-warning";
     button.textContent = "Delete";
     button.addEventListener("click", function () {
+      const deletedBook = myLibrary[i].title;
       myLibrary.splice(i, 1);
+
       render();
-      alert(`You've deleted title: ${myLibrary[i].title}`);
+      alert(`You've deleted title: ${deletedBook}`);
     });
   }
 }