REST style E-Commerce Website with JavaScript & PHP | no frameworks or libraries | part VII

Session Based Shopping Cart Implementation
In this playlist we will journey together to build a complete e-commerce website and will learn following professionally sought after skills:
1. REST API based .
2. SPA: Single Page Application for faster loading.
3. Code separation between frontend & backend.
4. Frontend & backend as two separate websites that communicate over FETCH API
5. Understand and handle CORS (Cross-Site-Resource-Sharing) related issues..
6. Frontend implementation in JS, backend implementation in PHP.
7. No Frameworks or libraries; able to code and develop without any framework crutches.
And much more...

#jsproject , #phpproject, #ecommerc, #ecommercewebsite, #HTMLcssJS, #HTML-CSS-JS-Php,
#SinglePageApplication, #SPA, #RESTapiBasedWebsite, #RESTapiBasedEcommerceWebsite, #facade, #FacadeDesignPattern
#php, #CORS, #fetch, #FetchApi, #REST

[UserL]

Amazing! No words! Please upload the next part as soon as possible! Many thanks!

[beticohernandez]

Hi how are things.
I'm almost done with the videos you've posted, and I've learned a lot, but here we go.
Will you post more videos?
Bye.

[beticohernandez]

Hello.
It's new to me how you work the java script to some things with the innerHTML

I added the bootstrap template and that's it, submerce creates the modals with javascript.
Could you please explain to me how you use javascript to document me better at times I get confused.

[beticohernandez]

Voy a empezar tu proyecto de nuevo, ¿con myadmin para la base de datos se ppuede?

[stadtminish]

Hello again,

So my script ran into an error as soon as I added a second item to the shopping cart. The foreach loop in the updateTotalCart does not find the key 'price' in the previously added key 'total'.
I have no idea why this didn't trigger any misbehavior for you, but I had to prefix the following code to get it to work.

if(array_key_exists('total', $_SESSION['cart'])) {

}

[beticohernandez]

El problema me daba en esta linea:
while ($name = {
array_push($arr, $name);
Le quite el name que esta en corchetes y me funciono.

[beticohernandez]

Thanks.
My mistake is because I don't use the database manager that you use, so I usually use myadmin.

[beticohernandez]

Hola.
{cart: Array(0)}


{cart: {…}}cart: {2: {…}, total: 500}[[Prototype]]: Object
{id: '2', image: 'pola.jpg', price: '500', stock: 20}


Cuando agrego un producto por primera vez no hay problemas pero cuando lo vuelvo a agregar me sale :
SyntaxError: Unexpected token '<', "<br />
<b>"... is not valid JSON

[stadtminish]

Thanks for this great tutorial.

Unfortunately, the following error occurs for me as soon as I include the db.php twice, like in your video, when cart.php is called and the two files guest_user_cart.php and logged_user_cart.php are included:

SyntaxError: Unexpected token '<', "<br />
<b>"... is not valid JSON

I can't explain this, except that PHP has recently had a problem with including the same file multiple times.

[beticohernandez]

Hello. What a pity to bother you. I tried again with your project but I get this error: SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data

[beticohernandez]

Hello,
I have paused the project because I ran into a problem and I have not found the solution.
I'm in video 7 I add a product to the cart fine, but when I add it again I get a warning
From invalid json.
I have checked but I can't find the error.

[beticohernandez]

I am going to complete your project, there is still a bug that I hope you will enlighten me on when you can.
I tell you in the session_start and if several products are added to the cart, but the quantity does not add up when adding the same product.
Finally, don't forget about your student.

[beticohernandez]

No he podido traer los productos en el menu categorias me sale esa arventencia en consola
SyntaxError: Unexpected token '<', "<br />
<b>"... is not valid JSON
jjajajajajaj
Siempre hay problemas.

[beticohernandez]

No me has contestado ¿en que pais estas o de donde eres?, yo soy Colombiano.

[beticohernandez]

Ya entro al 4 video me esta funcionando todo.

[beticohernandez]

Hello, in the first video in the console it shows me the categories but when I print it I get an object.
hahahaha