Can't set Access-Control-Allow-Origin request header - ajax

Question

I making an AJAX request to the food2fork api and can't get by the No 'Access-Control-Allow-Origin' header is present error. I've tried setting the header in beforeSend and setting crossDomain: true but it didn't work.
This is my AJAX call:
$.ajax({
type: "GET",
dataType: 'json',
url: url,
crossDomain: true,
beforeSend: function(xhr) {
xhr.setRequestHeader("Access-Control-Allow-Origin", "*");
},
success: function(data){
console.log('in ajax json call');
console.log(data);
$('#info').html(JSON.stringify(data));
}
});
I tried setting the request header server side in node express.js with:
router.get('/test', cors(), function(req,res)
{
res.set("Access-Control-Allow-Origin", "*"); //set header here
res.render('exampleSearch', {title: 'FM | Test'});
});
Cors is an npm package that sets cross-reference permissions but didn't help me solve the problem.
Can you tell me what I'm doing wrong?

Answer 1

Client-side request doesn't work in this case. I had to do the request server side:
router.post('/test', function(req,res){
var callback = function(response){
var str = '';
//another chunk of data has been recieved, so append it to `str`
response.on('data', function (chunk) {
str += chunk;
});
//the whole response has been recieved
response.on('end', function () {
var recipes = JSON.parse(str);
//do something with recipes
});
}
var options = {
host: "food2fork.com",
path: "/api/search?key=[myKey]&q=" + ingredients
};
http.request(options,callback).end();
});
Used code from nodejitsu.com