jquery 控制freetextbox控件的长度
控制 freetextbox 长度的jquery该如何写哇
ASP 里边写了个
<FTB:FreeTextBox ID="FreeTextBox1" runat="server" Width="550px"></FTB:FreeTextBox>
要如何才能用jquery把他的utf-8格式长度限制在4000个以内并且还能显示还能动态剩下多少个字啊？


[解决办法]

JScript code

function b() {            var txtbody = $(window.frames['FreeTextBox1_designEditor'].document).find('body').html();            var bytelen = 0;            var i;            for (i = 0; i < txtbody.length; i++) {                charCode = txtbody.charCodeAt(i);                if (charCode < 0x007f) {                    bytelen += 1;                } else if ((0x0080 <= charCode) && (charCode <= 0x07ff)) {                    bytelen += 2;                } else if ((0x0800 <= charCode) && (charCode <= 0xffff)) {                    bytelen += 3;                }            }            alert(bytelen);        }