关于javascript：[CORS]交叉源请求仅支持协议方案：http，数据，chrome，chrome-extension，https，chrome-extension-resource

[CORS]Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, https, chrome-extension-resource

本问题已经有最佳答案，请猛点这里访问。

我知道有很多解释，但它仍然无法解决我目前的问题。
基本上，我使用/sth和``/ sthElse to render into my index.html (which is /`)，因为一个是发布另一个是评论，我确实在我的服务器中包含了标题，但我仍然有一个错误说：

XMLHttpRequest cannot load file:///sth. Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, https, chrome-extension-resource."

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//client jquery ajax

function something(){
$.ajax({
method: 'GET',
url: '/sth',
headers: headers,
success: function(data) {
console.log(data);
}
});
}
function somethingElse(){
$.ajax({
method: 'GET',
url: '/sthElse',
success: function(data) {
console.log('comment',data);
}
}
}
});
}

// server express

app.use(function(req, res, next) {
res.header('Access-Control-Allow-Origin', 'example.com');
res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE');
res.header('Access-Control-Allow-Headers', 'Content-Type');
next();
});

app.get('/sth', function(request, response){
var req = http.get(url+"posts", function(res){
console.log('STATUS: ' + res.statusCode);
console.log('HEADERS: ' + JSON.stringify(res.headers));
var bodyChunks = [];
res.on('data', function(chunk) {
bodyChunks.push(chunk);
})
.on('end', function() {
var body = Buffer.concat(bodyChunks);
response.send(JSON.parse(body));
})
});
req.on('error', function(e) {
console.log('ERROR');
});
});

app.get('/sthElse', function(request, response){
console.log('STATUSasdf: ' + response.statusCode);
var req = http.get(url+'comments', function(res) {
var bodyChunks = [];
res.on('data', function (chunk) {
bodyChunks.push(chunk);
})
.on('end', function() {
console.log('this is bodychunks pre decription', bodyChunks);
var body = Buffer.concat(bodyChunks);
response.send(JSON.parse(body));
})
});
req.on('error', function(e) {
console.log('problem with request: ' + e.message);
});
});