node.js变量不会被解析

i am new in node.js and express.

我是node.js的新手并表达。

in my test app the html variables will not be parsed. what is the problem?

在我的测试应用程序中，不会解析html变量。问题是什么？

server.js

enter var express = require('express');
var bodyParser = require('body-parser');
var app = express();

app.use(bodyParser.urlencoded({
    extended : true
}));

app.use(express.static(__dirname));

app.get('/', function(req, res) {
    res.render('index', {
        wert : 'hallo'
    });
});

app.post('/', function(req, res) {
    var wert = req.body.wert;
    var html = 'Hallo: '+wert+'!\n'
    + '<a href="/">Mach\'s nochmal!</a>';
    res.send(html);
});
app.listen(8882);
console.log('Server port: 8882');

index.html:

index.html的：

<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Startseite</title>
</head>
<body>
<p>Hallo <%= wert %>, dies ist mein kleiner Webserver!</p>
<br>
    <form action="/" method="post">
        <input type="text" width="40" name="wert" value="<%= wert %>"> 
        <input type="submit" value="submit">
    </form>
</body>
</html>

the value parameter <%= wert %> in the view is not parsed. why? how to do it?

不解析视图中的值参数<％= wert％>。为什么？怎么做？

thank you jet

谢谢你

2 个解决方案

#1

Express doesn't come with a view-engine by default. You need to add one, in your case EJS.

Express默认情况下不带有视图引擎。您需要添加一个，在您的情况下EJS。

Using the command line, type:

使用命令行键入：

npm install ejs

server.js now becomes:

server.js现在变为：

var express = require('express');
var bodyParser = require('body-parser');
var app = express();

app.engine('.html', require('ejs').__express);
app.set('views', __dirname + '/views');
app.set('view engine', 'html');
app.use(bodyParser.urlencoded({
    extended : true
}));
app.use(express.static(__dirname));

app.get('/', function(req, res) {
    res.render('index', {
        wert: 'hallo'
    });
});

app.post('/', function(req, res) {
    var wert = req.body.wert;
    res.render('index', {
        wert: wert
    });
});
app.listen(8882);

#2

thank you ben,

谢谢你，

your ejs configuration was good. I had to install express, ejs, body-parser. that was ok. then i had to remove the line with app.use(express.static(__dirname));

你的ejs配置很好。我不得不安装express，ejs，body-parser。那没关系。然后我不得不用app.use删除该行（express.static（__ dirname））;

and i had to change

我不得不改变

app.set('views', __dirname + '/views');

to 
app.set('views', __dirname);

for my original path.

为了我原来的道路。

then everything was ok!

一切都很好！

greez jet

格力喷气机

#1