Question

我试图通过命令提示符运行以下Node.js代码。但是，代码不会执行（它没有在命令提示符下显示任何错误）。我也使用（pubnub）安装了必要的npm install pubnub包。但是，问题仍然存在。

我错过了什么吗？代码链接在https://www.pubnub.com/docs/nodejs-javascript/pubnub-javascript-sdk#initializing-the-client

var PubNub = require('pubnub')

function publish() {

    pubnub = new PubNub({
        publishKey : 'demo',
        subscribeKey : 'demo'
    })

    function publishSampleMessage() {
        console.log("Since we're publishing on subscribe connectEvent, we're sure we'll receive the following publish.");
        var publishConfig = {
            channel : "hello_world",
            message : "Hello from PubNub Docs!"
        }
        pubnub.publish(publishConfig, function(status, response) {
            console.log(status, response);
        })
    }

    pubnub.addListener({
        status: function(statusEvent) {
            if (statusEvent.category === "PNConnectedCategory") {
                publishSampleMessage();
            }
        },
        message: function(message) {
            console.log("New Message!!", message);
        },
        presence: function(presenceEvent) {
            // handle presence
        }
    })      
    console.log("Subscribing..");
    pubnub.subscribe({
        channels: ['hello_world'] 
    });
};

Answer 1

您已编写函数publish（）但您忘记执行它。您只需在代码末尾添加publish();即可。

node.js代码没有在没有提示任何错误的情况下执行

1 个答案: