JavaScript fetch, VS Code, CORS, Debugging and curl

I've recently been trying to use the Pocket API to bring my favourite links into a page. Naturally, I was starting from a position of testing it on localhost. I've also been using VS Codium, which has improved on Ubuntu. I use the Brave browser and so was looking to make use of this in my debugging.

So first things, first I needed to get debugging happening in VS Codium using Brave on Ubuntu. As you try and run the debugger, you have the option to create a launch.json file for your project. Here, I selected to create a Chrome web app. Once the launch.json was created, I edited it with the following, in order that the debugger used Brave:

{

    "version": "0.2.0",

    "configurations": [

        {

            "type": "chrome",

            "request": "launch",

            "name": "Brave",

            "runtimeExecutable": "/opt/brave.com/brave/brave-browser",

            "userDataDir": true,

            "url": "http://localhost:5500",

            "webRoot": "${workspaceFolder}",

            "runtimeArgs": ["--disable-web-security"]

        }

    ]

}

I the setting "--disable-web-security" fixed the CORS problem commonly faced such as,

Access to fetch at ‘http://localhost:8000/api/v1/messages’ from origin ‘http://localhost:8080’ has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource. If an opaque response serves your needs, set the request’s mode to ‘no-cors’ to fetch the resource with CORS disabled.

The final issue I encountered was the code itself. I'd successfully retrieved the data I was looking for using curl, but converting the curl command to a JavaScript fetch was problematic. I then came across this page which helped.

Now we're cooking!

Using YQL with PHP

I've just started to look into YQL. It looks very powerful but some of the videos an tutorials are a bit dry. There are some missing links which I'm hoping to expose in how to implement with PHP. It should be possible to use YQL for your applications very easily, but at the moment I'm finding my way around it. Part of the problem seems to be around not knowing the structure of the returned JSON before you have to present it. We'll see. Below is an example of calling some YQL on a single web page and displaying the paragraphs within it. I call a very simple PHP GET using CURL. Then I loop through the resulting JSON object until I reach the paragraphs.
Good luck!


<?php
$api = 'http://query.yahooapis.com/v1/public/yql?q=';
$query = 'select * from html where url="http://www.stream-idc.net/"';
$params = '&format=json';

$session = curl_init($api.urlencode($query).$params);
curl_setopt($session, CURLOPT_RETURNTRANSFER,true);  
$json = curl_exec($session);
curl_close($session);
$yqlObj =  json_decode($json);

if(!is_null($yqlObj->query->results))
{
foreach($yqlObj->query->results->body->p as $bodyContent)
{
echo $bodyContent->{'content'};
}
}
?>