纯 JS FCKEditor 输入验证

<script type="text/javascript">
<!--
// Automatically calculates the editor base path based on the _samples directory.
// This is usefull only for these samples. A real application should use something like this:
// oFCKeditor.BasePath = ’/fckeditor/’ ;    // ’/fckeditor/’ is the default value.

var sBasePath ='/fckeditor/';

var oFCKeditor = new FCKeditor( 'news_content') ;
oFCKeditor.BasePath    = sBasePath ;
oFCKeditor.Height    = 400 ;
oFCKeditor.Width    = 600 ;
oFCKeditor.Value    = '' ;
oFCKeditor.Create() ;
//--〉

//取fck内容的长度
function GetMessageLength(str)
{
    var oEditor = FCKeditorAPI.GetInstance(str) ;
    var oDOM = oEditor.EditorDocument ;
    var iLength ;

    if ( document.all )        // If Internet Explorer.
    {
        iLength = oDOM.body.innerText.length ;
    }
    else                    // If Gecko.
    {
        var r = oDOM.createRange() ;
        r.selectNodeContents( oDOM.body ) ;
        iLength = r.toString().length ;
    }
    //oEditor.InsertHtml(’’)
    return iLength
}

function CheckPost(){
    if(GetMessageLength("news_content")>10)
    {
        alert("请输入内容");
        return false;
    }
}

//取fck内容
function GetMessageContent(str)
{
     var oEditor = FCKeditorAPI.GetInstance(str) ;
     return oEditor.GetXHTML();
     //document.write(oEditor.GetXHTML());
}
-->
</script>

<input type="button" id="" value="FCKTest" onclick="CheckPost();" />
<input type="button" id="Button1" value="FCKTest1" onclick="alert(GetMessageContent('news_content'))" />