diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index 23acfa71..7e66e26e 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -1,12 +1,12 @@
-
+
-
+ My Book Library
@@ -31,7 +31,7 @@ Library
Library
/>
Library
class="form-control"
id="pages"
name="pages"
+ min="1"
required
/>
+
+
@@ -80,17 +83,9 @@ Library
|
-
-
- |
- |
- |
- |
- |
-
-
+
-
+
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 75ce6c1d..c32a514a 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -1,103 +1,104 @@
-let myLibrary = [];
+const myLibrary = [];
-window.addEventListener("load", function (e) {
+// DOM node variables
+const titleInput = document.getElementById("title");
+const authorInput = document.getElementById("author");
+const pagesInput = document.getElementById("pages");
+const checkInput = document.getElementById("check");
+const tableBody = document.getElementById("table-body");
+const deleteMsg = document.getElementById("delete-msg");
+const submitBtn = document.getElementById("submit-btn");
+
+window.addEventListener("load", function () {
+ submitBtn.addEventListener("click", submit);
+ // Populate default books, then draw the table
populateStorage();
render();
});
function populateStorage() {
- if (myLibrary.length == 0) {
- let book1 = new Book("Robison Crusoe", "Daniel Defoe", "252", true);
- let book2 = new Book(
- "The Old Man and the Sea",
- "Ernest Hemingway",
- "127",
- true
+ if (myLibrary.length === 0) {
+ // Page counts stored as numbers, not strings
+ myLibrary.push(new Book("Robinson Crusoe", "Daniel Defoe", 252, true));
+ myLibrary.push(
+ new Book("The Old Man and the Sea", "Ernest Hemingway", 127, true)
);
- myLibrary.push(book1);
- myLibrary.push(book2);
- render();
}
}
-const title = document.getElementById("title");
-const author = document.getElementById("author");
-const pages = document.getElementById("pages");
-const check = document.getElementById("check");
+function Book(title, author, pages, check) {
+ this.title = title;
+ this.author = author;
+ this.pages = pages;
+ this.check = check;
+}
//check the right input from forms and if its ok -> add the new book (object in array)
//via Book function and start render function
function submit() {
- if (
- title.value == null ||
- title.value == "" ||
- pages.value == null ||
- pages.value == ""
- ) {
+ const titleVal = titleInput.value.trim();
+ const authorVal = authorInput.value.trim();
+ const pagesRaw = pagesInput.value;
+
+ // Reject blank or whitespace-only title/author
+ if (titleVal === "" || authorVal === "" || pagesRaw === "") {
alert("Please fill all fields!");
- return false;
- } else {
- let book = new Book(title.value, title.value, pages.value, check.checked);
- library.push(book);
- render();
+ return;
}
-}
-function Book(title, author, pages, check) {
- this.title = title;
- this.author = author;
- this.pages = pages;
- this.check = check;
+ // Normalise page count to a number
+ const pagesNum = parseInt(pagesRaw, 10);
+ if (isNaN(pagesNum) || pagesNum < 1) {
+ alert("Please enter a valid page count.");
+ return;
+ }
+
+ myLibrary.push(new Book(titleVal, authorVal, pagesNum, checkInput.checked));
+ render();
}
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);
- titleCell.innerHTML = myLibrary[i].title;
- authorCell.innerHTML = myLibrary[i].author;
- pagesCell.innerHTML = myLibrary[i].pages;
+ // Clear all rows in one operation instead of one by one
+ tableBody.innerHTML = "";
+
+ for (let i = 0; i < myLibrary.length; i++) {
+ const row = tableBody.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 == false) {
- readStatus = "Yes";
- } else {
- readStatus = "No";
- }
- changeBut.innerText = 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");
- delBut.id = i + 5;
- deleteCell.appendChild(delBut);
- delBut.className = "btn btn-warning";
- delBut.innerHTML = "Delete";
- delBut.addEventListener("clicks", function () {
- alert(`You've deleted title: ${myLibrary[i].title}`);
+ const delBtn = document.createElement("button");
+ delBtn.className = "btn btn-warning";
+ delBtn.textContent = "Delete";
+ deleteCell.appendChild(delBtn);
+
+ delBtn.addEventListener("click", function () {
+ const deletedTitle = myLibrary[i].title;
myLibrary.splice(i, 1);
render();
+ deleteMsg.textContent = `You've deleted: "${deletedTitle}"`;
+ deleteMsg.style.display = "block";
+ setTimeout(() => {
+ deleteMsg.style.display = "none";
+ }, 3000);
});
}
}