function LTrim(str){ var whitespace = new String(" \t\n\r"); var s = new String(str); if (whitespace.indexOf(s.charAt(0)) != -1) { var j=0, i = s.length; while (j < i && whitespace.indexOf(s.charAt(j)) != -1) { j++; } s = s.substring(j, i); } return s;} function RTrim(str){ var whitespace = new String(" \t\n\r"); var s = new String(str); if (whitespace.indexOf(s.charAt(s.length-1)) != -1) { var i = s.length - 1; while (i >= 0 && whitespace.indexOf(s.charAt(i)) != -1) { i--; } s = s.substring(0, i+1); } return s;} function Trim(str){ return RTrim(LTrim(str));} 看看?
输入信息的文本框
<input type="text" name="inputinfo" size="12"><p>
<input name="button" type="button" class="myButton" onClick="document.myForm.accept.value=document.myForm.inputinfo.value;document.myForm.inputinfo.value='';" value="添加-->>">
<textarea name="accept" cols="45" rows="4" ></textarea>
</form>
if(document.myForm.inputinfo.value=="")return;
if(document.myForm.accept.value!="")document.myForm.accept.value+="\n";
document.myForm.accept.value+=document.myForm.inputinfo.value;
}
function RTrim(str){ var whitespace = new String(" \t\n\r"); var s = new String(str); if (whitespace.indexOf(s.charAt(s.length-1)) != -1) { var i = s.length - 1; while (i >= 0 && whitespace.indexOf(s.charAt(i)) != -1) { i--; } s = s.substring(0, i+1); } return s;}
function Trim(str){ return RTrim(LTrim(str));}
看看?
<input type="text" name="txttest" value="">
<input type="button" name="buttest" value="start" onclick="Trim(document.test.txttest.value)">
</form>function Trim(str)
{
RTrim(LTrim(str));
alert("str");
return;
}我真的挺菜的哦大哥大姐们,就一步的多教教我好吗?
谢谢了!!!
{
var t = Trim(str); return;
}
{
var t = Trim(str);
alert(t);
return;
}
onclick="Trim(this)"不是这样的!~~
<script language="javascript">
function Trim(str)
{
var b=str.replace(/(^\s*)|(\s*$)/g, "");
window.alert(b);
}
</script>
<input type="text" name="txttest" value="">
<input type="button" name="buttest" value="start" onclick="Trim(txttest.value)">