[jquery] CORS jQuery AJAX request

I'm having troubles with an ajax request. I was getting the error

No 'Access-Control-Allow-Origin' header is present on the requested resource.

So what I tried was this jQuery ajax request:

var request = $.ajax({
    type: 'GET',
    url: url,
    dataType: "json",
    xhrFields: {
        withCredentials: true
    }
});
request.done(function(data){
    console.log(data);
});    

But it is still not working. I am still getting the error.

How should I fix this?

This question is related to jquery ajax request cors

The answer is


It's easy, you should set server http response header first. The problem is not with your front-end javascript code. You need to return this header:

Access-Control-Allow-Origin:*

or

Access-Control-Allow-Origin:your domain

In Apache config files, the code is like this:

Header set Access-Control-Allow-Origin "*"

In nodejs,the code is like this:

res.setHeader('Access-Control-Allow-Origin','*');

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