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  1. Glyphicons 字體圖標:http://v3.bootcss.com/components/#glyphicons <span class= "glyphicon glyphicon-search" aria-hidden= "true" ></span> 應用在按鈕 <button type= "button" class= "btn btn-default" aria-label= "Left Align" > <span class= "glyphicon glyphicon-align-left" aria-hidden= "true" ></span> </ button> <button type= "button" class= "btn btn-default btn-lg" > <span class= "glyphicon glyphicon-star" aria-hidden= "true" ></span> Star </button>
  2. alert組件中所包含的圖標是用來表示這是一條錯誤消息的,通過添加額外的.sr-only文本就可以讓輔助設備知道這條提示所要表達的意思了。 <div class= "alert alert-danger" role= "alert" > <span class= "glyphicon glyphicon-exclamation-sign" aria-hidden= "true" ></span> <span class= "sr-only" > Error: </span> Enter a valid email address </div>