Because the FCK editor differs from other TEXTAREA file input boxes, it is not the same that all of them should be judged to be 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, "");
}
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