才能是来自独创性。独创性是思维、观察、理解和判断的一种独特的方式。
app.js:
// 引入express模块
var express = require('express');
// 创建Web服务器对象
var app = express();
let chatMsgs = [];
// 静态资源处理
app.use(express.static('public'));
app.use(express.urlencoded({ extended: false }));
app.use(express.json());
app.listen(3000, () => console.log('服务器启动成功'));
app.get('/getMsg', function (req, res) {
res.send(chatMsgs);
});
app.post('/sendMsg', function (req, res) {
console.log(req.body);
chatMsgs.push({ name: req.body.name, content: req.body.content });
});
app.post('/clearMsg', function (req, res) {
console.log(req.body);
if (req.body.cmd == 'clear') {
chatMsgs = [];//清屏
}
res.send('ok');
});Ajax聊天室示例-后台清屏功能：clear.html:
Ajax聊天室示例-后台 清屏
前台聊天界面index.html:
Ajax聊天室示例 欢迎访问Ajax聊天室示例 发送 ' + new Date().toLocaleString() + " " + data[i].name + ':' + data[i].content + '';
// }
// document.getElementById('chat').innerHTML = html;
// }
// }
xhr.onload = function () {
var data = JSON.parse(xhr.responseText);
if (data.length !== tmpMsg.length) {
tmpMsg = data;
var html = '';
for (var i = 0; i ' + new Date().toLocaleString() + " " + data[i].name + '说：' + data[i].content + '';
}
document.getElementById('chat').innerHTML = html;
}
}
xhr.send();
//console.log('getMsg');
}, 1000);
" _ue_custom_node_="true">完整代码 chatroomEZ.7z
