FCK to determine whether the content is empty (if you just go to space, then this way is wrong) _ page Editor

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Copy Code code as follows:

Determine if the content of the FCK is empty
var oeditor = fckeditorapi.getinstance (' content '); The content here is the ID value of the FCK
if (GetLength ("content") <=0) {
Alert (' content cannot be empty! ');
Oeditor.focus ();
return false;
}


function GetLength (str) {
var oeditor = fckeditorapi.getinstance (str);
var checkcontent= oeditor.editordocument;
var contentlength;
if (document.all) {
Contentlength= CheckContent.body.innerText.trim (). length;
}
else{
var r = Checkcontent.createrange ();
R.selectnodecontents (Checkcontent.body);
Contentlength= r.tostring (). Trim (). length;
}
return contentlength;
}

Remove whitespace from a string
String.prototype.trim = function ()
{
Return This.replace (/(^[\s]*) | ( [\s]*$)/g, "");
}