NodeJS历险记 (Adventures in NodeJS)

I built an app a couple of weeks ago after going through FreeCodeCamp’s Front-End curriculum and wanted to write an update as I head into NodeJS-land. I was finally able to obtain my Front-End certificate, which I am very proud of, but the excitement quickly wore off once I jumped into the backend side of things.

在经历了FreeCodeCamp的前端课程之后，几周前，我构建了一个应用程序，并想在进入NodeJS领域时编写一个更新。我终于能够获得我的骄傲的前端证书，但是当我跳入后端时，兴奋很快就消失了。

Learning NodeJS has been incredibly difficult so far. There’s no point in trying to sprinkle it with fairy dust. The move from the front-end of primarily using JQuery and some basic JS techniques, to the backend with plain ol’ Javascript and hundreds of callbacks showed me that I had no clue what I was doing.

到目前为止，学习NodeJS非常困难。试图撒上仙尘没有任何意义。从主要使用JQuery和一些基本JS技术的前端到使用普通Java脚本和数百个回调的后端，这向我表明我不知道自己在做什么。

NodeJS requires a fundamental understanding of Javascript. I definitely didn’t have that when I started trying to learn it. I had to go back to watching hours of YouTube videos explaining callbacks, the event loop, closures, scope, etc…

NodeJS需要对Java语言有基本的了解。当我开始尝试学习它时，我绝对没有。我不得不回头看几个小时的YouTube视频，讲解回调，事件循环，关闭，作用域等…

I started to get a fair amount of understanding, but would still get lost after tons of callbacks. I was using learnyounode and couldn’t even get past the first problem without looking for a solution.

我开始获得相当多的了解，但是在大量回调之后仍然会迷失。我使用的是learningyounode，即使没有寻找解决方案也无法解决第一个问题。

I started consuming an incredible amount of MEAN Stack tutorials to try and get the basic ideas of using Express for routing and Node. I built no less than 4 different To-Do apps, 2 reddit clones, 1 Twitter clone, and 2 chat apps, before I realized I wasn’t really absorbing what was going on. I definitely wasn’t mindlessly following instructions, but they assumed I knew too much about Javascript.

我开始使用大量的MEAN Stack教程，试图获得使用Express进行路由和Node的基本思想。在我意识到自己并没有真正吸收正在发生的事情之前，我构建了不少于4种不同的To-Do应用，2个reddit克隆，1个Twitter克隆和2个聊天应用。我绝对不会盲目地遵循说明，但是他们认为我对Java语言了解太多。

I started watching a series on TheNewBoston’s YouTube channel that really helped me get the fundamentals down. I was going to try and make another reddit clone, until I realized that I should learn with something I care about, the Soundcloud queue app I built.

我开始在TheNewBoston的YouTube频道上观看系列节目，这确实帮助我降低了基本面。我打算尝试制作另一个Reddit克隆，直到我意识到我应该学习自己关心的东西，即我构建的Soundcloud队列应用程序。

I stopped watching things and started reading through documentation. I followed getting started tutorials to try and understand the fundamentals a bit more.

我不再看东西，而是开始阅读文档。我按照入门教程进行操作，以尝试进一步了解基础知识。

I’ve frequently talked about the feeling of getting something to “click” when programming, and this time I had the same feeling. It’s a time you’ll never forget because your adrenaline is pumping and you can see some light. When I was able to setup my first database with key-value pairs, have events push things to the database, and then send the JSON to a route that I made was incredible. It was late and I was fist pumping around my room like a lunatic.

我经常谈论在编程时让某些东西“点击”的感觉，而这次我有同样的感觉。这是一个您永远不会忘记的时刻，因为肾上腺素不断增加，您可以看到一些光线。当我能够使用键值对设置我的第一个数据库时，让事件将事件推送到数据库，然后将JSON发送到我创建的路由中是不可思议的。已经很晚了，我拳头像疯子一样在房间里抽水。

From there I started to gain some confidence and kept pushing myself. I worked on finding, sorting, and incrementing my existing documents in MongoDB. I realized I wanted a live feed so I started looking into Socket.io.

从那开始，我开始获得一些信心，并不断地推动自己。我致力于在MongoDB中查找，排序和增加现有文档。我意识到我想要直播，所以我开始研究Socket.io。

I think the problem with the tutorials I was consuming before, was that I never really learned why I was doing things. I was always just doing them and not really thinking about it. It’s incredibly important to know why you’re doing what you’re doing.

我认为我以前使用的教程的问题在于，我从来没有真正了解过为什么要做事情。我一直只是在做它们而没有真正考虑它。要知道为什么要做什么，这非常重要。

Instead of googling something that started with “How do I…”, I started searching for the why and trying to figure out what’s actually going on. My searches started to look more like “What is a refresh token in OAuth?” or “What does serialize and deserialize do in Passport.js?”.

我没有去搜索以“我如何……”开头的内容，而是开始寻找原因并试图弄清实际情况。我的搜索开始看起来更像“什么是OAuth中的刷新令牌？” 或“在Passport.js中序列化和反序列化做什么？”。

When I made that switch I really started to learn.

当我做出切换时，我真的开始学习了。

It’s also very important to keep pushing yourself. If you have something that you want to make, build it. There is always a way to do something, it’s just up to you to figure out (unless of course it’s an API limitation or something…then you just need to get a bit hack-y :). If you don’t know how to authenticate users, try to learn. If you don’t know how to create an RESTful API, learn! It’ll take a ton of time, but once it clicks you’ll be ecstatic.

不断自我推销也很重要。如果您有想要制作的东西，请构建它。总是有一种方法可以完成某件事，这取决于您自己决定(除非它是API限制之类的东西，否则……您只需要稍微加点子就可以了：)。如果您不知道如何认证用户，请尝试学习。如果您不知道如何创建RESTful API，请学习！这将花费大量时间，但是一旦点击，您就会欣喜若狂。

I was so in the zone last Sunday I was working until 5am when the Seahawks started playing here in Melbourne. It was a 14 hour coding-binge. I’ve really never had that much enjoyment and focus with anything before. It was a crazy feeling.

上周日，我一直在该区域工作，直到海鹰队在墨尔本开始比赛的凌晨5点为止。这是一个14个小时的编码过程。我以前从未真正享受过如此多的乐趣和关注。这是一种疯狂的感觉。

I’ve finally figured out (well sort of) how to deploy this with Heroku and it’s live. There is now a feed showing the songs that are being queued on the site, as well as a live artist feed in the top right showing the artists being searched now across the site. I have also implemented a Top 10 ranking for the Top 10 songs queued all time (well, since launching the feature).

我终于弄清楚了(如何进行)如何在Heroku中部署它，并且它是实时的。现在有一个提要，显示正在网站上排队的歌曲，右上角还有一个现场艺术家提要，显示了现在正在站点上搜索的艺术家。我还为所有一直排队的前10首歌曲实现了前10名的排名(自启动此功能以来)。

The Random 20 is still there for all of those who use it to find new music. And thanks to a suggestion on my last post, I’ve enabled users to log in with their SoundCloud accounts and like songs.

对于所有使用它来查找新音乐的人来说，Random 20仍然存在。多亏了我在上一篇文章中的建议，我使用户能够使用他们的SoundCloud帐户和喜欢的歌曲登录。

Learning Node and Javascript properly is going to be a long journey, but I have patience. Three months ago I didn’t even know what a variable was.

正确学习Node和Javascript将会很漫长，但是我有耐心。三个月前，我什至不知道变量是什么。

You can follow my adventure on Twitter as well.

您也可以在Twitter上关注我的冒险经历。