js获取fck文本编辑器内的内容，不包括html标签在内

 //取fck内容的长度 function GetLength(str) { var oEditor = FCKeditorAPI.GetInstance(str); var checkContent = oEditor.EditorDocument; var contentLength; if (document.all) { contentLength = trim(checkContent.body.innerText).length; } else { var r = checkContent.createRange(); r.selectNodeContents(checkContent.body); contentLength = trim(r).length; } return contentLength }