express框架初步

var exp = require(‘express‘);
var ejs = require(‘ejs‘);
var app = new exp();
app.set("view engine","ejs");
app.get(‘/index‘,function (req,res) {
    res.render(‘tianwadi‘,{});
});//默认情况下，express使用views目录下的.ejs文件

app.listen(8888,‘127.0.0.1‘);

var exp = require(‘express‘);
var ejs = require(‘ejs‘);
var app = new exp();
app.engine(‘html‘,ejs.__express);//注册引擎类型默认为ejs
app.set(‘view engine‘,‘html‘);//设定引擎类型
app.set(‘views‘,__dirname+"/tpl");//自定义模板存放目录
app.get(‘/index‘,function (req,res) {
    res.render(‘index‘,{});
});

app.listen(8888,‘127.0.0.1‘);

var exp = require(‘express‘);
var ejs = require(‘ejs‘);
var app = new exp();
app.use(exp.static(‘static‘));//指定静态文件根目录---app.use也是中间件的用法
app.engine(‘html‘,ejs.__express);//注册引擎类型默认为ejs
app.set(‘view engine‘,‘html‘);//设定引擎类型
app.set(‘views‘,__dirname+"/tpl");//自定义模板存放目录
app.get(‘/index‘,function (req,res) {
    res.render(‘index‘,{"headtitle":‘ejs首页‘});
});

app.listen(8888,‘127.0.0.1‘);

......省略部分
<footer class="footer mt-auto py-3">
    <div class="container">
        <span class="text-muted">Place sticky footer content here.</span>
    </div>
</footer>
<script src="/js/jquery-3.4.1.min.js"></script></body>
</html>

var exp = require(‘express‘);
var ejs = require(‘ejs‘);
var app = new exp();
app.use(exp.static(‘static‘));//指定静态文件根目录
app.use(‘/multimedia‘,exp.static(‘static‘));//给真实的项目文件夹static起了个别名multimedia
app.engine(‘html‘,ejs.__express);//注册引擎类型默认为ejs
app.set(‘view engine‘,‘html‘);//设定引擎类型
app.set(‘views‘,__dirname+"/tpl");//自定义模板存放目录
app.get(‘/index‘,function (req,res) {
    res.render(‘index‘,{"headtitle":‘ejs首页‘});
});

app.listen(8888,‘127.0.0.1‘);

......
<div class="container">
        <h1 class="mt-5"><%=headtitle%></h1>
        <p class="lead">Pin a footer to the bottom of the viewport in desktop browsers with this custom HTML and CSS. A fixed navbar has been added with <code>padding-top: 60px;</code> on the <code>main &gt; .container</code>.</p>
        <p><img src="/multimedia/pic/EEhTIVVVUAAiht3.jpg" width="400"></p>
        <p>Back to <a href="/docs/4.3/examples/sticky-footer/">the default sticky footer</a> minus the navbar.</p>
    </div>
......