textarea的手动换行会产生换行标志，但这个标志存在却看不到，存入数据库中后读出来显示在页面上却不会换行，如何处理呢？
网上众说纷纭，经过测试用 textarea的内容.replace(/\n/g, "<br/>") 解决问题，在IE6/7/8/9 Firefox/3.6.13 chrome10.0.648.82下测试通过，示例代码如下：
<
html
>
< head >
< meta http-equiv ="Content-Type" content ="text/html; charset=utf-8" />
< title > YES!B/S!文章示例页面 </ title >
< script src ="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" ></ script >
< script type ="text/javascript" >
function testabc()
{
var content = $( " #test " ).val().replace( / \n / g, " <br/> " );
alert(content);
}
</ script >
</ head >
< body >
< textarea id ="test" rows ="4" style ="width: 406px; overflow-y: auto;" ></ textarea >< br >
< input type ="button" onclick ="testabc()" value ="测试" />
</ body >
</ html >
< head >
< meta http-equiv ="Content-Type" content ="text/html; charset=utf-8" />
< title > YES!B/S!文章示例页面 </ title >
< script src ="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" ></ script >
< script type ="text/javascript" >
function testabc()
{
var content = $( " #test " ).val().replace( / \n / g, " <br/> " );
alert(content);
}
</ script >
</ head >
< body >
< textarea id ="test" rows ="4" style ="width: 406px; overflow-y: auto;" ></ textarea >< br >
< input type ="button" onclick ="testabc()" value ="测试" />
</ body >
</ html >
结果：
下面的处理就不说了哈
