CKEditor控件绑定与JavaScript操作详解

1、页面：

<%@ Register Assembly="CKEditor.NET" Namespace="CKEditor.NET" TagPrefix="CKEditor" %>-------引进CKEditor控件

    <tr>
                <td>【图书特色】<span style="color:Red;">*</span></td>
                <td colspan="5">
                    <CKEditor:CKEditorControl ID="bookFeature" runat="server" ></CKEditor:CKEditorControl>
                    <asp:CustomValidator ID="bookFeatureRequiredFieldValidator" runat="server" ControlToValidate="bookFeature" Display="Dynamic" 
                        OnServerValidate="richTextisNull_ServerValidate" ErrorMessage="
图书特色不允许为空！" />
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<asp:CustomValidator 只能取到非空值，无法做控件是否为空的判断；现只用js做判断
--------------------------------------------------------------------------------------------------------------------------------------------------- 
                    <div id="bookFeatureDiv" style="color:Red; width:300px;"><pre></pre></div>
                        
                </td>
            </tr>

<asp:Button ID="SaveButton" CssClass="button" runat="server" Text="保  存" OnClick="SaveButton_Click" />&nbsp;&nbsp;&nbsp;&nbsp;

2、js判断【图书特色】是否为空：

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CKEDITOR.instances.brief.getData()----取CKEDITOR的ID为brief的值
CKEDITOR.instances.txtNewsBodyEN.setData（）------设置CKEDITOR的ID为brief的值
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<script type="text/javascript">
        $(function() {