1、编写app.js文件
var express = require("express"); var app = express(); app.all("*", function(req, res, next) { res.header("Access-Control-Allow-Origin", "*"); res.header("Access-Control-Allow-Headers", "X-Requested-With"); res.header("Access-Control-Allow-Methods", "PUT,POST,GET,DELETE,OP0TIONS"); res.header("X-Powered-By", "3.2.1"); res.header("Content-Type", "application/json;charset=utf-8"); next(); }); var questions = [{ data: 213, num: 4545, age: 12 }, { data: 889, num: 365, age: 13 }]; app.get('/123', function(req, res) { res.status(200), res.json(questions) }); var server = app.listen(3000, function() { var host = server.address().address; var port = server.address().port; console.log("Example app listening at http://%s:%s", host, port); })
2、安装express
npm install express --save
3、node环境下运行app.js
4、创建index.html，使用jquery的ajax请求接口
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script src="jquery-2.1.0.js"></script>
</head>
<body>
<div>超级厉害的</div>
<script type="text/javascript">
$.ajax({
type: "get",
url: "http://127.0.0.1:3000/123",
async: true,
success: function(res) {
console.log(res)
}
});
</script>
</body>
</html>
5、浏览器运行index.html