NodeJS歷險記 (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.

在經歷了FreeCodeCamp的前端課程之后，幾周前，我構建了一個應用程序，并想在進入NodeJS領域時編寫一個更新。我終于能夠獲得我的驕傲的前端證書，但是當我跳入后端時，興奮很快就消失了。

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.

到目前為止，學習NodeJS非常困難。試圖撒上仙塵沒有任何意義。從主要使用JQuery和一些基本JS技術的前端到使用普通Java腳本和數百個回調的后端，這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需要對Java語言有基本的了解。當我開始嘗試學習它時，我絕對沒有。我不得不回頭看幾個小時的YouTube視頻，講解回調，事件循環，關閉，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.

我開始獲得相當多的了解，但是在大量回調之后仍然會迷失。我使用的是learningyounode，即使沒有尋找解決方案也無法解決第一個問題。

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.

我開始使用大量的MEAN Stack教程，試圖獲得使用Express進行路由和Node的基本思想。在我意識到自己并沒有真正吸收正在發生的事情之前，我構建了不少于4種不同的To-Do應用，2個reddit克隆，1個Twitter克隆和2個聊天應用。我絕對不會盲目地遵循說明，但是他們認為我對Java語言了解太多。

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.

我開始在TheNewBoston的YouTube頻道上觀看系列節目，這確實幫助我降低了基本面。我打算嘗試制作另一個Reddit克隆，直到我意識到我應該學習自己關心的東西，即我構建的Soundcloud隊列應用程序。

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

我不再看東西，而是開始閱讀文檔。我按照入門教程進行操作，以嘗試進一步了解基礎知識。

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.

我經常談論在編程時讓某些東西“點擊”的感覺，而這次我有同樣的感覺。這是一個您永遠不會忘記的時刻，因為腎上腺素不斷增加，您可以看到一些光線。當我能夠使用鍵值對設置我的第一個數據庫時，讓事件將事件推送到數據庫，然后將JSON發送到我創建的路由中是不可思議的。已經很晚了，我拳頭像瘋子一樣在房間里抽水。

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.

從那開始，我開始獲得一些信心，并不斷地推動自己。我致力于在MongoDB中查找，排序和增加現有文檔。我意識到我想要直播，所以我開始研究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.

我認為我以前使用的教程的問題在于，我從來沒有真正了解過為什么要做事情。我一直只是在做它們而沒有真正考慮它。要知道為什么要做什么，這非常重要。

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?”.

我沒有去搜索以“我如何……”開頭的內容，而是開始尋找原因并試圖弄清實際情況。我的搜索開始看起來更像“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.

當我做出切換時，我真的開始學習了。

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.

不斷自我推銷也很重要。如果您有想要制作的東西，請構建它。總是有一種方法可以完成某件事，這取決于您自己決定(除非它是API限制之類的東西，否則……您只需要稍微加點子就可以了：)。如果您不知道如何認證用戶，請嘗試學習。如果您不知道如何創建RESTful API，請學習！這將花費大量時間，但是一旦點擊，您就會欣喜若狂。

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，我一直在該區域工作，直到海鷹隊在墨爾本開始比賽的凌晨5點為止。這是一個14個小時的編碼過程。我以前從未真正享受過如此多的樂趣和關注。這是一種瘋狂的感覺。

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).

我終于弄清楚了(如何進行)如何在Heroku中部署它，并且它是實時的。現在有一個提要，顯示正在網站上排隊的歌曲，右上角還有一個現場藝術家提要，顯示了現在正在站點上搜索的藝術家。我還為所有一直排隊的前10首歌曲實現了前10名的排名(自啟動此功能以來)。

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.

對于所有使用它來查找新音樂的人來說，Random 20仍然存在。多虧了我在上一篇文章中的建議，我使用戶能夠使用他們的SoundCloud帳戶和喜歡的歌曲登錄。

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.

正確學習Node和Javascript將會很漫長，但是我有耐心。三個月前，我什至不知道變量是什么。

You can follow my adventure on Twitter as well.

您也可以在Twitter上關注我的冒險經歷。