形式1：

复制代码 代码如下:

function checkFCK(key)

{

var oEditor=FCKeditorAPI.GetInstance(key);

var content=oEditor.GetXHTML(true);

content=content.replace(//g,"");

content=content.replace(/s/g,"");

content=content.replace(//g,"");

content=content.replace(/<br/>/g,"");

content=content.replace(/<p></p>/g,"");

content=content.replace(/<div></div>/g,"");

if(content==null||content==""){

oEditor.SetHTML("");

return false;

}

return true;

}

形式2：

复制代码 代码如下:

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 ;

}

return iLength

}