node 大寫(xiě)

Today, let's see a third party module that helps us in working with upper-case letters without necessarily typing them in upper-case in our source code.

今天，讓我們看一個(gè)第三方模塊，它可以幫助我們處理大寫(xiě)字母，而不必在源代碼中以大寫(xiě)字母鍵入它們。

You may find it useless! But it's very important.

您可能會(huì)發(fā)現(xiàn)它沒(méi)有用！ 但這很重要。

For example, you may have a form where you require your users to fill in upper-case letters only. You may wish to add a function where any typed in the letter appears in upper-case even though typed in lower-case from the keyboard.

例如，您可能有一個(gè)表單，要求您的用戶僅填寫(xiě)大寫(xiě)字母。 您可能希望添加一個(gè)功能，即使從鍵盤(pán)輸入小寫(xiě)字母，字母中的任何字母都以大寫(xiě)形式顯示。

Like said before, Node modules are like libraries which help us perform specific tasks. Node.JS is always considered powerful because it has a very large ecosystem of third-party modules.

如前所述，Node模塊就像是可以幫助我們執(zhí)行特定任務(wù)的庫(kù)。 Node.JS一直被認(rèn)為是功能強(qiáng)大的，因?yàn)樗哂蟹浅｝嫶蟮牡谌侥K生態(tài)系統(tǒng)。

The upper-case module is a third-party module built by some experts to help us.

大寫(xiě)模塊是一些專家構(gòu)建的第三方模塊，可以幫助我們。

Take Note! You should have Node.js installed in your PC.

做記錄！ 您應(yīng)該在PC中安裝了Node.js。

With Node.js already up and running, let's get started.

在Node.js已經(jīng)啟動(dòng)并運(yùn)行的情況下，讓我們開(kāi)始吧。

Now, let's get started.

現(xiàn)在，讓我們開(kāi)始吧。

First of all, install the upper-case module by typing npm install upper-case via the command line.

首先，通過(guò)在命令行中鍵入npm install upper-case來(lái)安裝大寫(xiě) 模塊 。

Wait for a while as it downloads.
NB: Internet required!

等待下載。
注意：需要互聯(lián)網(wǎng)！

Take note that only third party modules are installed via command line unlike built in modules which comes along with the node.js environment when downloaded...

請(qǐng)注意，不同于第三方模塊在下載時(shí)隨Node.js環(huán)境一起提供的內(nèi)置模塊，僅通過(guò)命令行安裝了第三方模塊。

Let's look at a basic use of the upper-case module.

讓我們看一下大寫(xiě)模塊的基本用法。

We'll create an http server that will output hello world in capital letters but written in small letters in the source code.

我們將創(chuàng)建一個(gè)http服務(wù)器，該服務(wù)器將以大寫(xiě)字母輸出問(wèn)候世界，但在源代碼中以小寫(xiě)字母書(shū)寫(xiě)。

Open a text editor and type the following code and save it with the file name app.js:

打開(kāi)一個(gè)文本編輯器，輸入以下代碼，并將其保存為文件名app.js ：

var http = require('http'); // includes the http module var uc = require('upper-case'); // include the upper-case module http.createServer(function (req, res) {res.writeHead(200, {'Content-Type': 'text/html'});res.write(uc("hello world!")); // assign the upper-case moduleres.end(); }).listen(8080); // port number

Note: The file should be saved in your default Node.js directory.

注意：該文件應(yīng)保存在默認(rèn)的Node.js目錄中。

Initiate the JavaScript file at the console by typing node app.js

通過(guò)鍵入節(jié)點(diǎn)app.js在控制臺(tái)上啟動(dòng)JavaScript文件

Take Note! : Your command line directory should be same with Node.js module directory.

做記錄！ ：您的命令行目錄應(yīng)與Node.js模塊目錄相同。

Finally, open your browser and navigate to http://localhost:8080

最后，打開(kāi)瀏覽器并導(dǎo)航到http：// localhost：8080

Thanks for coding with me. Your comments are most welcome.

感謝您與我一起編碼。 非常歡迎您發(fā)表評(píng)論。

翻譯自: https://www.includehelp.com/node-js/upper-case-node-js-module.aspx

node 大寫(xiě)

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