跨域1

 1 router.get(‘/‘, function(req, res, next) {
 2     console.log(‘收到了客户端的请求：‘, req.query);
 3     var data = JSON.stringify({
 4         ‘status‘: 200,
 5         ‘result‘: {
 6             ‘name‘: ‘撩课学院‘,
 7             ‘site‘: ‘itlike.com‘
 8         }
 9     });
10     // 获取方法的名称
11     var methodName = req.query.callback;
12     var methodStr =  methodName + ‘(‘ + data + ‘)‘;
13     res.end(methodStr);
14 });
15 
16 
17 
18 <script>
19     function getData(data) {
20         console.log(data);
21     }
22 
23     function getLike(data) {
24         console.log(data);
25     }
26 </script>
27 <script src="http://localhost:3000/?callback=getLike"></script>