我正在使用Visual Studio 2012構(gòu)建Web應(yīng)用程序。我試圖將字?jǐn)?shù)添加到文本框中。但是，在添加javascript代碼和html代碼之后。我收到上述錯(cuò)誤。這是我的JavaScript代碼代碼：function validateLimit(obj, divID, maxchar) {objDiv = get_object(divID);if (this.id) obj = this;var remaningChar = maxchar - trimEnter(obj.value).length;if (objDiv.id) {    objDiv.innerHTML = remaningChar + " characters left";}if (remaningChar <= 0) {    obj.value = obj.value.substring(maxchar, 0);    if (objDiv.id) {        objDiv.innerHTML = "0 characters left";    }    return false;}else{ return true; }}function get_object(id) {var object = null;if (document.layers) {    object = document.layers[id];} else if (document.all) {    object = document.all[id];} else if (document.getElementById) {    object = document.getElementById(id);}return object;}function trimEnter(dataStr) {return dataStr.replace(/(\r\n|\r|\n)/g, "");}主頁(yè)中的服務(wù)器代碼<script type="text/javascript" src="js/JScript.js" ></script>ASPX代碼，（HTML代碼）<tr><th style="width: 595px; height: 135px;">Official Report :</th><td colspan="4" style="height: 135px">  <asp:TextBox ID="tbofficial" runat="server" Height="121px" TextMode="MultiLine" Width="878px" MaxLength="500"   ToolTip="Summary:(500 characters)" onkeyup="return validateLimit(this, 'lblMsg1', 500)" ></asp:TextBox>  <div id="lblMsg1">500 characters left</div><asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"         ControlToValidate="tbofficial" Display="Dynamic"         SetFocusOnError="True">*</asp:RequiredFieldValidator>  <br />  <asp:Label ID="lblmsg" runat="server"></asp:Label>  <br />  <br />        <asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_Click" />  <asp:Button ID="btnClear" runat="server" Text="Clear" OnClick="btnClear_Click" />        </td></tr>