textarea自动换行的换行符是什么?js如何获得它?
textarea自动换行的换行符是什么? 
 js中如何获得textarea的换行符? 
  <textarea   id= "txtTest "   WRAP= "hard "   style= "width:200px ">  </textarea>  
 当输入的内容自动换行之后,能否获得自动换行的换行符? 
 txtTest.value.indexOf( "\n ")   等于   -1,txtTest.value.indexOf( "\r ")也是等于-1 
 谢谢!   
------解决方案-------------------- <html>  
  <head>  
  <meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 ">  
  <title> new page </title>  
  <script>  
 function a(){ 
 alert(document.getElementById( "t ").innerText.replace( "\r\n ", "$ "));//回车换行换成 "$ " 
 } 
  </script>  
  </head>  
  <body>  
  <textarea id=t>  </textarea>  
  <input type=button onclick= "a() " value= "ok ">  
  </body>  
  </html>