ITP-2025-LONDON|LOVETH-OKAFOR|Module-Data-Flows|Book-library #177
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There are a few improvements you can make.
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When I checked the code in
index.htmlat https://validator.w3.org/, it indicated some errors.
debugging/book-library/script.js
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| if (title.value === "" || pages.value === "") { | ||
| alert("Please fill in all fields!"); | ||
| return false; |
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In terms of input validation,
- Are all input properly checked?
- What if a user enters only space characters in the "title" input field?
- What if a users enters
-1or3.1416in the "pages" input field?
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thank you very much for your obsarvation, i have implemented the needed function
debugging/book-library/script.js
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| for (let n = rowsNumber - 1; n > 0; n--) { | ||
| table.deleteRow(n); | ||
| } |
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Instead of deleting the table rows one by one, can you think of a more efficient way to remove all rows (except the <th>...</th>) in the table?
debugging/book-library/script.js
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| titleCell.innerHTML = book.title; | ||
| authorCell.innerHTML = book.author; |
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With the way the book's title is assigned to an HTML element, a book with a title containing special character sequence such as <i> can possibly ruin the display.
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Can you think of a more consistent way to name the variables representing the two buttons, changeBut and delButton?
debugging/book-library/script.js
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| alert(`You've deleted title: ${book.title}`); | ||
| myLibrary.splice(i, 1); | ||
| render(); | ||
| saveToLocalStorage(); // Save updated library to localStorage | ||
| render(); // Re-render the table |
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At the moment when the alert message is displayed, has the book mentioned in the message been deleted yet?
How would you rearrange these statements to make the message truthful?
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@cjyuan i really appreciate your time and effort, and most espacially the details you pay for everthing!! thanks again for the time.
cjyuan
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