今天自己在做一個小網(wǎng)站的時候用到這個功能,便把代碼貼了下來,代碼如下:
Code
<!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />--> < script type = " text/javascript " language = " javascript " >
function textCounter(field, maxlimit)
{
if (document.getElementById(field).value.length > maxlimit)
{
document.getElementById(field).value = document.getElementById(field).value.substring( 0 ,maxlimit);
}
else
{
document.getElementById( " remLen " ).value = maxlimit - document.getElementById(field).value.length;
}
}
< / script>
aspx頁面代碼:
Code
<!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />--> < form runat = " server " id = " writemsgtxt " >
< table width = " 100% " border = " 0 " cellspacing = " 0 " cellpadding = " 0 " >
< tr >
< td height = " 22 " align = " left " >& nbsp;你還可以留言
< input readonly type = " text " id = " remLen " runat = " server " size = " 4 " maxlength = " 3 " value = " 500 " class = " input1 " />
字
</ td >
</ tr >
< tr >
< td align = " left " >
< asp:TextBox ID = " content " runat = " server " CssClass = " input2 " Rows = " 8 " Columns = " 50 " TextMode = " MultiLine " onkeyup = " textCounter('content',500) " ></ asp:TextBox >
</ td >
</ tr >
</ table >
</ form >
引用自:
http://www.cnblogs.com/gaozhong98/archive/2008/11/04/1326571.html
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