如何在node.js中使用Ajax？

Question

我知道以前有人问过这个问题，但我还是不明白。我正在使用node.js，还想在其中使用Ajax。我的代码是：

var $ = require('jquery');
var http = require("http");
var ws = require("nodejs-websocket");
var fs = require("fs");
var colors = require('colors');

http.createServer(function (req, res) {
    fs.createReadStream("index.php").pipe(res)
}).listen(8080)
// ###################################################################################################################################
// ########################################################## CLASSE SERVER ##########################################################
// ###################################################################################################################################
var tableauDeJoueur = new Array();

var server = ws.createServer(function (connection){
    connection.nickname = null
    connection.on("text", function (str){
        if (connection.nickname === null){
            connection.nickname = str;
            
            console.log((connection.nickname+" arrive sur PixelWorld !").green);
        }
        else{
            var code = str.substring(0,2);
            var reste = str.substring(2,str.length);
            switch(code){
                case "01":
                    var coupe = reste.split("4H[m~Ft7");
                    var mail = coupe[0];
                    var mdp = coupe[1];
                    $.ajax({
                        url: "fonctionPHP/connection.php",              
                        type: "POST",
                        data: {'mail': mail,'mdp': mdp},
                        async:false,
                        success: function(html){
                            if(html == "OK"){
                                console.log("oui");
                            }
                            else{
                                console.log("non");
                            }
                        }
                    });
                    break;
                case "02":
                    break;
            }
        }
    })
    connection.on("close", function (){
        console.log((connection.nickname+" a quitté PixelWorld !").red);
    })
})
server.listen(8081)

function broadcast(str) {
    server.connections.forEach(function (connection) {
        connection.sendText(str)
    })
}

我的问题是在“ $ .ajax（{”这里。当用户到来时，服务器会通知我，这没关系。但是，当它发送带有01代码的消息时，节点会崩溃并提示：

 $.ajax({
                                          ^
TypeError: Object function ( w ) {
                                if ( !w.document ) {
                                        throw new Error( "jQuery requires a window with a document" );
                                }
                                return factory( w );
                        } has no method 'ajax'
    at Connection.<anonymous> (/var/www/dhkuhnuhbnkiuh/app.js:46:8)
    at Connection.EventEmitter.emit (events.js:95:17)
    at Connection.processFrame (/var/www/dhkuhnuhbnkiuh/node_modules/nodejs-websocket/Connection.js:516:9)
    at Connection.extractFrame (/var/www/dhkuhnuhbnkiuh/node_modules/nodejs-websocket/Connection.js:458:14)
    at Connection.doRead (/var/www/dhkuhnuhbnkiuh/node_modules/nodejs-websocket/Connection.js:209:23)
    at Socket.<anonymous> (/var/www/dhkuhnuhbnkiuh/node_modules/nodejs-websocket/Connection.js:52:8)
    at Socket.EventEmitter.emit (events.js:92:17)
    at emitReadable_ (_stream_readable.js:408:10)
    at emitReadable (_stream_readable.js:404:5)
    at readableAddChunk (_stream_readable.js:165:9)

感谢你的帮助！

</div>

Answer 1

Doing a request from nodejs is fairly easy, dont have to use $.ajax at all. You can use the npm request module. $.ajax is built for firing requests from the browser. But if you 'really' want to use $.ajax on node, I think you can read through this question