Question

我目前正在使用Express.js来创建我的网站。我的主服务器脚本名为index.coffee。我还创建了一个名为request.js的脚本，该脚本发出GET请求并使用

显示响应

  console.log(list);

从控制台运行脚本时没有问题：node request.js

我的问题是：如何让我的页面上的“获取此列表”按钮通过在同一页面上显示列表来响应单击（即，在服务器上执行request.js并显示结果）？

app.js

/**
 * Module dependencies.
 */

var express = require('express')
  , routes = require('./routes');

var app = module.exports = express.createServer();

// Configuration

app.configure(function(){
  app.set('views', __dirname + '/views');
  app.set ('view engine', 'coffee');
app.register('.coffee', require('coffeekup').adapters.express);

  app.use(express.bodyParser());
  app.use(express.methodOverride());
  app.use(app.router);
  app.use(express.static(__dirname + '/public'));
});

app.configure('development', function(){
  app.use(express.errorHandler({ dumpExceptions: true, showStack: true }));
});

app.configure('production', function(){
  app.use(express.errorHandler());
});

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



app.listen(3000);
console.log("Express server listening on port %d in %s mode", app.address().port, app.settings.env);

index.coffee

doctype 5
html ->

  head ->
    body

p - ＆gt; “嘿”

Answer 1

我使用普通JS而不是咖啡脚本，所以这里是Fosco评论的一个例子（称之为server.js）：

var express = require('express'),
    list = require('./request.js').Request; // see  template

var app = express.createServer();

app.use(express.static(__dirname + '/public')); // exposes index.html, per below

app.get('/request', function(req, res){
    // run your request.js script
    // when index.html makes the ajax call to www.yoursite.com/request, this runs
    // you can also require your request.js as a module (above) and call on that:
    res.send(list.getList()); // try res.json() if getList() returns an object or array
});

app.listen(80);

编写index.html文件，并将其保存在节点应用程序目录的/public子文件夹中（通过express.static在上面公开）。：

<html>
    <body>
    <div id="button">Get this List</div>
    <div id="response"></div>
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
    <script type="text/javascript">
    $(document).ready(function() {
        $('#button').click(function() {
            // run an AJAX get request to the route you setup above...
            // respect the cross-domain policy by using the same domain
            // you used to access your index.html file!
            $.get('http://www.yoursite.com/request', function(list) {
                $('#response').html(list); // show the list
            });
        });
    });
    </script>
    </body
</html>

如果您将 request.js 作为模块加入，则可能如下所示：

var RequestClass = function() {
    // run code here, or...
}; 

// ...add a method, which we do in this example:
RequestClass.prototype.getList = function() {
    return "My List";
};

// now expose with module.exports:
exports.Request = RequestClass;

在您的服务器上运行node server.js。然后前往www.yoursite.com/index.html

从html页面执行Nodejs脚本？

1 个答案: