kindeditor限制html长度的问题

<html>

<head>

<script charset="utf-8" src="/kindeditor/kindeditor_min.js" type="text/javascript"></script>

</head>

<body>

<textarea ></span>

</body>

<script type="text/javascript">

var keditor;

$(function () {

//判断是否超过。

var whetherMoreThan = 0;

var keoptions = {

minWidth: 585,

filterMode: true,

indentChar: ' ',

cssPath: '/kindeditor/plugins/code/prettify.css',

uploadJson: '/kindeditor/asp.net/upload_json.ashx',

fileManagerJson: '/kindeditor/asp.net/file_manager_json.ashx',

allowImageUpload: true,

allowFlashUpload: false,

allowMediaUpload: false,

allowFileManager: true,

allowImageRemote: true,

fillDescAfterUploadImage: true,

afterCreate: function() {

var self = this;

KindEditor.ctrl(document, 13, function() {

self.sync();

KindEditor('form1')[0].submit();

});

KindEditor.ctrl(self.edit.doc, 13, function() {

self.sync();

KindEditor('form1')[0].submit();

});

}, afterChange: function () {

var limitNum = 8000; //设定最大长度数

if (this.count() > limitNum) { //限制html的长度

// if (this.count("text") > limitNum) { //限制文本的长度

//alert("超过最大长度");

document.getElementById("spRemaining").style.color = "red";

document.getElementById("spRemaining").innerHTML = "已经超过最大值,不属于在输入";

//取上一次的值。

var Descriptionvalue =document.getElementById("Description").value;

this.html(Descriptionvalue);

whetherMoreThan = 1;

}

else {

//未了让他不显示剩余位置。

if (whetherMoreThan == 1) {

whetherMoreThan = 0;

}

else {

document.getElementById("spRemaining").style.color = "green";

document.getElementById("spRemaining").innerHTML = "剩余字数" + (limitNum - this.count());

}

//把值同步到textarea

this.sync("Description");

}

}

};

keoptions = $.extend(keoptions, ketoolbase);

keditor = KindEditor.create('#Description', keoptions);

});

</script>

</html>