MangaDB

Notes on things I have learned along the way

How to Run Code in Specific Page

There regular way to run JavaScript when a page loads is with:

$(document).ready(callback);

However, whether you are using templates or plain HTML, you can specify the page you would like to run the code in by changing document to a class name that you would add to the top most level of your div.

/* Load Manga info when page is loaded
 * When the profile page is read it will
 * call the function to get all mangas.
 */
$('.user-profile').ready(getMangas);

Implement Flash Messages with jade

Flash messages allows the app to share important and useful information just once and they reside in flash memory.

It is important to know that if you call it once to test, it will not work the second time. Once again, the message is displayed once.

To implement it, you first need to install connect-flash.

npm install --save connect-flash

This will save it to your package.json file where you will see something like this "connect-flash": "^0.1.1".

You will need to add the following to your server:

var flash = require('connect-flash');
app.use(flash());

Then you can create a flash message in the following way:

req.flash('info', 'Flash is back!')

That is, identifier, and data. Just make sure that you put it before your res code. Then you display it with your render.

res.render('index', { messages: req.flash('info') });