100
Codes The requested action is being taken. Expect a reply before proceeding with a new command.


110
Restart marker reply.


120
Service ready in (n) minutes.


125
Data connection already open, transfer starting.


150
File status okay, about to open data connection.


200
Codes The requested action has been successfully completed. Command okay.


202
Command not implemented


211
System status, or system help reply.


212
Directory status.


213
File status.


214
Help message.


215
NAME system type. (NAME is an official system name from the list in the Assigned Numbers document.)


220
Service ready for new user.


221
Service closing control connection. (Logged out if appropriate.)


225
Data connection open, no transfer in progress.


226
Closing data connection. Requested file action successful (file transfer, abort, etc.).


227
Entering Passive Mode


230
User logged in, proceed.


250
Requested file action okay, completed.


257
"PATHNAME" created.


300
Codes The command has been accepted, but the requested action is being held pending receipt of further information.


331
User name okay, need password.


332
Need account for login.


350
Requested file action pending further information.


400
Codes The command was not accepted and the requested action did not take place. The error condition is temporary, however, and the action may be  requested again.


421
Service not available, closing control connection. (May be a reply to any command if the service knows it must shut down.)


425
Can't open data connection.


426
Connection closed, transfer aborted.


450
Requested file action not taken. File unavailable (e.g., file busy).


451
Requested action aborted, local error in processing.


452
Requested action not taken. Insufficient storage space in system.


500
Codes The command was not accepted and the requested action did not take place. Syntax error, command unrecognized. This may include errors such as command line too long.


501
Syntax error in parameters or arguments.


502
Command not implemented.


503
Bad sequence of commands.


504
Command not implemented for that parameter.


530
User not logged in.


532
Need account for storing files.


550
Requested action not taken. File unavailable (e.g., file not found, no access).


552
Requested file action aborted, storage allocation exceeded


553
Requested action not taken. Illegal file name.

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history.pushState(null, null, document.URL);
  window.addEventListener('popstate', function () {
  history.pushState(null, null, document.URL);
});

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以下列出驗證規則檔案中常見的驗證器及格式
 

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Bouncy Castle 是產生 PEM file 非常好用的一個工具
官方網站:https://www.bouncycastle.org/

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HashCode 是驗證資料是否被串改常用的驗證值,因為原始字串如果被修改了,重新再取得的 HashCode 就會不一樣
以下是一個簡單取得 SHA-256 值的方法

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有時我們要讓網頁中的某個 Tag 具有相同的功能我們可能會像下面這樣寫
$("input").click(function (){
    alert("test");
});

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筆記一下小問題,如果新增方法不正確可能造成後續搜尋錯誤
 
假設一個網頁內容如下
~~~~~

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下面指令可以讓滑鼠在移到該標籤上時改變滑鼠指標
把滑鼠移到語法上就可以看到效果喔~
cursor: pointer
cursor: no-drop

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效果如下

 其中廣告上的左右按鈕是用 JQuery Mobile 做出來的
因為覺得它不錯看就拿來用了

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在剛學習 For 迴圈時通常通會有印出三角型的練習
像是
*
**

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快速排序法(Quick Sort)是將一個未排序的陣列分成四個部份

比對值(最左邊或最右邊的值,以下代稱S)
比S小的值
比S大的值
未處理的部份

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在學習 Heap Sort 前要先了解資料結構中的二元樹
而 Heap Sort 會用到的是二元樹中的完美二元樹
先學會二元樹的走訪及排序方法才會有辨法了解程式是如何運作的
關於二元樹的說明請先參考其它網站

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