<HTML>
<HEAD>
<title>JavaScript掐頭去尾</title>
<META http-equiv=Content-Type content=text/html;charset=gb2312>
<script>
//把一個字符串的右邊空格字符去掉
String.prototype.Rtrim = function(){return this.replace(/(/s*$)/g, "");}
function LTrim(str)
{
var arrStr=str.split('/n');
var str2="";
for(var i=0;i<arrStr.length;i++)
{
str2=str2 + arrStr[i].Rtrim() + '/n';
}
document.getElementById("content").value=str2;
}
</script>
<input type=button value="掐 頭"
onclick=LTrim(document.getElementById("content").value)>
<input type=button value="去 尾"
onclick=RTrim(document.getElementById("content").value)>
<BR>
<textarea id="content" name="content" cols=80 rows=10></textarea>
</BODY></HTML>