两个页面之间互相通信
首先搭建express框架，然后通过two页面发送数据给服务器，服务器把数据传送给one页面
在two 中发送数据，在one中显示
- router/index.js
var axios = require('axios');
router.get('/sse_server', (req, res) => {
res.setHeader('Content-Type', 'text/event-stream');
setInterval(function () {
console.log(message);
if (message.length > 0) {
var msg = message.shift();
res.write('data:' + msg + '\n\n');
}
}, 1000);
})
router.get('/one', (req, res) => {
res.render('one');
})
router.get('/two', (req, res) => {
res.render('two');
})
router.get('/ajax', (req, res) => {
var content = req.query.content;
message.push(content);
res.end('ok');
})- one.ejs
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>新消息</title>
</head>
<body>
<h1>接受到的消息</h1>
<script>
var source = new EventSource('/sse_server');
var i = 0;
var timer = null;
source.onmessage = function(data){
console.log(data.data);
if(timer) return;
timer = setInterval(function () {
i++;
if (i % 4 == 0) {
document.title = '[ ]接受消息';
} else if (i % 4 == 1) {
document.title = '[新 ]接受消息';
} else if (i % 4 == 2) {
document.title = '[新消 ]接受消息';
} else if (i % 4 == 3) {
document.title = '[新消息]接受消息';
}
}, 500);
}
</script>
</body>
</html>- two.ejs
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
</head>
<body>
<input type="text">
<button>发送</button>
<script>
var btn = document.querySelector('button');
btn.onclick = function(){
var value = $('input').val();
$.get('/ajax',{content:value},function(res){
console.log(res);
})
}
</script>
</body>
</html>