1、客户端代码
<!doctype html>
<html>
<head>
<meta charset=”utf-8″>
<title>Server-Sent</title>
</head>
<body>
<div id=”result”></div>
<!–js–>
<script>
var source = new EventSource(‘/source.interface’); //数据接口
source.onmessage = function(event){
document.getElementById(‘result’).innerHTML += event.data + ‘<br>’;
}
</script>
</body>
</html>
2、Nodejs后台代码
var express = require(‘express’);
var router = express.Router();
router.get(‘source.interface’, function(req, res, next){
res.setHeader(‘Content-Type’, ‘text/event-stream’);
res.setHeader(‘Cache-Control’, ‘no-cache’);
res.send(‘data:’ + new Date() + ‘\n\n’); //后面必须带有’\n\n’，否则不会触发
});
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