Request blocked cross-origin - PHP [duplicate]

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Hello

I know there are several questions on this subject, but even reading the answers I still have problems. I've tried to put Access-Control-Allow-Origin in the header of the .php file, I've already tried putting it in the configuration of virtualhost in Apache and nothing seems to work. Where am I going wrong?

I've already seen that if I use an extension or disable browser flags, it works. So maybe it's something I'm missing from the client side? : 

      Requisição cross-origin bloqueada: A política de mesma origem (Same Origin Policy) impede a leitura do recurso remoto em https://a.4cdn.org/wsg/1.json. (Motivo: o cabeçalho CORS 'Access-Control-Allow-Origin' não está presente).

<html>
    <head>
        <link rel="stylesheet" href="css/trend.css">
        <script src='http://code.jquery.com/jquery-latest.min.js' type='text/javascript'></script>
    </head>
<body>
    <div class="trendings">
        <h3>Trending:</h3>

        <div>           
            <ol id="trending">              
            </ol>
        </div>
    </div>

<script>
    $(document).ready(function(){
        var node,textnode,a,btn;        
        $.getJSON("https://a.4cdn.org/wsg/1.json", function(json) {
            for(var i = 1; i < json.threads.length; i++){
                node = document.createElement("li");
                a = document.createElement('a');
                textnode = document.createTextNode(json.threads[i].posts[0].sub);
                a.appendChild(textnode);
                a.href="http://boards.4chan.org/wsg/thread/"+json.threads[i].posts[0].no;           
                document.getElementById("trending").appendChild(node).appendChild(a);
            }
        });     
    });

</script>
</body>

</html>
    
asked by anonymous 01.04.2017 / 23:13

1 answer

0

Verify that the server accepts external requests by using tools such as PostMan. If it works, try adding the following line in your JavaScript, prior to requests:

$. support.cors = true;

    
01.04.2017 / 23:27
Remove element in interop Create code to update Schema