January 2012
Intermediate to advanced
584 pages
11h 56m
Chinese
Content preview from 操作介面設計模式 第二版
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模式
|
375
自動完成（
Autocompletion
）
圖
8
-
22
Amazon
這是什麼
當使用者在文字欄位中輸入資料時，UI 猜測可能的答案，顯示一份可選擇的答案
清單，並在適當的時機自動完成資料的填寫。
何時使用
使用者輸入某些可以預期的資料，像是 URL、使用者姓名或地址、今天的日期、
檔案名稱等等。你可以做出合理的猜測，測出使用者可能想輸入的資料 — 或許有
一份關於使用者輸入事物的歷史清單，或許使用者是從一組已存在的值中選取（例
如某個目錄下的檔案清單）。
搜尋 框、 瀏覽 器的 U RL 欄位 、郵 件欄 位、 常用 的網 站表 單（ 例如 網站 註冊 或購
物清單）、 文字編輯器 ，以及命令 列，這些若 有自動完成的支 援時，似乎 都好用
多了。
為何使用
自動完成省下許多時間、精力、認知上的負擔，並減少腕關節傷害。它把費力的打
字工作轉變 成簡單的選 取清單（如 果有可靠的 單一選項可 以提供，工 作還能更簡
單）。我們藉此可為使用者省下無數秒的工作時間，並造就千百隻健康的手腕！
當鍵入的字串冗長而難以輸入（或難記）時，就像 URL 或郵件位址，自動完成便
極有價值。它以下拉式清單的形式提供「外在的知識」，從而減少使用者的記憶負
擔。另有一項額外的好處，便是防止錯誤的發生：所需輸入的字串愈長愈奇怪，使
用者打錯字的機會也愈高。自動完成記錄便沒有這樣的問題了。
DI_2e_ch08.indd 375 2012/1/5 下午 03:28:21
376
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第八章
對行動裝置而言，這個模式甚
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.