瞭解table-cell的表格width設定為1%的原因。
http://www.tuicool.com/articles/VzUVfyi
通過向輸入欄位添加首碼和尾碼的內容，您可以向使用者輸入添加公用的元素。例如，您可以添加貨幣符號，或者在 Twitter 名稱前添加 @，或者應用程式介面所需要的其他公用的元素。
input-group(input-group-xs,input-group-sm,input-group-lg)、input-group-addon、form-control
//源碼//各元素設定為等高顯示，input-group輸入框組display:table，input-group-addon和form-control設定display:table-cell.input-group { position: relative; display: table; border-collapse: separate;}//input-group如果同時應用了col樣式，則取消浮動和左右padding.input-group[class*="col-"] { float: none; padding-right: 0; padding-left: 0;}.input-group .form-control { position: relative; z-index: 2; float: left; width: 100%; margin-bottom: 0;}.input-group-addon,.input-group-btn {//設定最小值，以便表格模式進行近似等分 width: 1%; white-space: nowrap; vertical-align: middle;}.input-group-addon,.input-group-btn,.input-group .form-control { display: table-cell;}
1.基本用法
有時需要將文本輸入框(input-group)和文字或者小icon組合在一起進行顯示
2.複選框與單選框作為addon .input-group-addon(可以放置label，icon，checkbox，radio)
3.按鈕作為addon
4.下拉式功能表按鈕作為addon
5.分段按鈕作為addon
<!DOCTYPE html><html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <!-- Bootstrap從3.0版本開始全面支援移動平台，貫徹移動先行宗旨 --> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>Bootstrap 101 Template</title> <!-- Bootstrap --> <link href="bootstrap-3.3.7-dist/css/bootstrap.min.css" rel="stylesheet"> </head> <body> <!-- 將文本輸入框(input-group)和文字或者小icon組合在一起進行顯示： input-group/input-group-addon/form-control--> <div class="input-group"> <span class="input-group-addon">$</span> <input type="text" class="form-control"> </div> <div class="input-group"> <input type="text" class="form-control"> <span class="input-group-addon">0.0</span> </div> <!-- 複選框與單選框作為addon .input-group-addon(可以放置label，icon，checkbox，radio) 源碼中如果對margin-top值進行了消除，方便對齊 input-group/input-group-addon/form-control--> <div class="input-group"> <span class="input-group-addon"><input type="checkbox"></span> <input type="text" class="form-control"> </div> <div class="input-group"> <span class="input-group-addon"><input type="radio"></span> <input type="text" class="form-control"> </div> <!-- 按鈕作為addon input-group/input-group-addon/form-control--> <div class="input-group"> <span class="input-group-addon"> <button class="btn btn-default">Go!</button> </span> <input type="text" class="form-control"> </div> <div class="input-group"> <input type="text" class="form-control"> <span class="input-group-addon"> <button class="btn btn-default">Go!</button> </span> </div> <!-- 下拉式功能表按鈕作為addon: input-group/input-group-btn/dropdown-menu/form-control--> <div class="input-group"> <input type="text" class="form-control"> <div class="input-group-btn"> <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown"> 前端 <span class="caret"></span> </button> <ul class="dropdown-menu"> <li><a href="#">HTML</a></li> <li><a href="#">JS</a></li> <li><a href="#">CSS</a></li> </ul> </div> </div> <!-- 分段按鈕作為addon： 在input-group-btn裡有多個btn--> <div class="input-group"> <input type="text" class="form-control"> <div class="input-group-btn"> <button class="btn btn-default" type="button">按鈕A</button> <button class="btn btn-default dropdown-toggle" type="button" data-toggle="dropdown"> <span class="caret"></span> </button> <button class="btn btn-default" type="button">按鈕B</button> <button class="btn btn-default" type="button">按鈕C</button> <ul class="dropdown-menu"> <li>1</li> <li>2</li> <li>3</li> </ul> </div> </div> <!-- bootstrap是基於jQuery--> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script> <script src="bootstrap-3.3.7-dist/js/bootstrap.min.js"></script> </body></html>
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