用JS来控制:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitiona...
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script language="javascript">
function checkLength(which) {
var maxchar=100;
var oTextCount = document.getElementById("char");
iCount = which.value.replace(/[^\u0000-\u00ff]/g,"aa").length;
if(iCount<=maxchar)
{
oTextCount.innerHTML = "<font color=#FF0000>"+ iCount+"</font>";
which.style.border = '1px dotted #FF0000';
which.size=iCount+2;
}
else alert("请不要超过"+maxchar);
}
</script>
</head>
<body>
<input name="words" size="2" maxlength="100" onkeyup="checkLength(this)"/>
<span id="char">0</span>个字符
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script language="javascript">
function checkLength(which) {
var maxchar=100;
var oTextCount = document.getElementById("char");
iCount = which.value.replace(/[^\u0000-\u00ff]/g,"aa").length;
if(iCount<=maxchar)
{
oTextCount.innerHTML = "<font color=#FF0000>"+ iCount+"</font>";
which.style.border = '1px dotted #FF0000';
which.size=iCount+2;
}
else alert("请不要超过"+maxchar);
}
</script>
</head>
<body>
<input name="words" size="2" maxlength="100" onkeyup="checkLength(this)"/>
<span id="char">0</span>个字符
</body>
</html>
用CSS的溢出来处理:
<center>
input高度固定,自动增宽<br>
<input type="text" style="width:60;overflow-x:visible;overflow-y:visible;">
<br>
<br>
textarea宽度固定,自动增高<br>
<textarea type="text" style="width:260;overflow-x:visible;overflow-y:visible;"></textarea>
input高度固定,自动增宽<br>
<input type="text" style="width:60;overflow-x:visible;overflow-y:visible;">
<br>
<br>
textarea宽度固定,自动增高<br>
<textarea type="text" style="width:260;overflow-x:visible;overflow-y:visible;"></textarea>
显示剩余字数的:
<HTML>
<BODY>
<script>
function textCounter(field, maxlimit) {
if (field.value.length > maxlimit)
field.value = field.value.substring(0, maxlimit);
else
document.WRITEMSGTXT.remLen.value = maxlimit - field.value.length;
}
</script>
<form name=WRITEMSGTXT>
<table width=447 bgcolor=#eaffe0>
<tr>
<td width=50% colspan=3><font color=46A718>有事请留言</font></td>
<td align=right><font>剩余字数:<input name=remLen value=50 readonly type=text size=4 maxlength=3 style="background-color: #eaffe0; border: 0; color: red"></font></td>
</tr>
</table>
<table width=447>
<tr align=center>
<td colspan=3><textarea name=words class=input1 onPropertyChange="textCounter(WRITEMSGTXT.words, 50)" type="text" style="width:260;overflow-x:visible;overflow-y:visible;"></textarea>
</td>
</tr>
</form>
</table>
</BODY>
</HTML>
<BODY>
<script>
function textCounter(field, maxlimit) {
if (field.value.length > maxlimit)
field.value = field.value.substring(0, maxlimit);
else
document.WRITEMSGTXT.remLen.value = maxlimit - field.value.length;
}
</script>
<form name=WRITEMSGTXT>
<table width=447 bgcolor=#eaffe0>
<tr>
<td width=50% colspan=3><font color=46A718>有事请留言</font></td>
<td align=right><font>剩余字数:<input name=remLen value=50 readonly type=text size=4 maxlength=3 style="background-color: #eaffe0; border: 0; color: red"></font></td>
</tr>
</table>
<table width=447>
<tr align=center>
<td colspan=3><textarea name=words class=input1 onPropertyChange="textCounter(WRITEMSGTXT.words, 50)" type="text" style="width:260;overflow-x:visible;overflow-y:visible;"></textarea>
</td>
</tr>
</form>
</table>
</BODY>
</HTML>
收藏一个CSS书写顺序建议
开通微软网络硬盘的方法 1G容量


2007/10/19 08:44 | by 

