Ajax from chinaz get comments code _ javascript skills

Chinaz uses ajax to read comments. The following is a reference to the chinaz code. The characters obtained by ajax are similar to the following content:

The Code is as follows:

{:"

Supported: [0] Objection: [0] Chinese webmaster site netizen: Anonymous on comment:

Who thinks that Google AdSense websites cannot be promoted? Dumb

", B: 1}

Then use the following ajax for output.

The Code is as follows:

Var key = '';
Var str = new Array ();

Function createAjaxObj (){
Var httprequest = false
// Document. domain = 'chinaz. com ';
If (window. XMLHttpRequest) {// if Mozilla, Safari etc
Httprequest = new XMLHttpRequest ()
If (httprequest. overrideMimeType)
Httprequest. overrideMimeType ('text/xml ');
}
Else if (window. ActiveXObject) {// if IE
Try
{
Httprequest = new ActiveXObject ("Msxml2.XMLHTTP ");
}
Catch (e)
{
Try
{
Httprequest = new ActiveXObject ("Microsoft. XMLHTTP ");
}
Catch (e ){}
}
}
Return httprequest;
}

Function load_feedback (arcID, pg ){

/*
Var url = "http://www.chinaz.com/plus/feedback_ajax.php? Action = show & arcID = "+ arcID +" & pg = "+ pg;
Var ajax = new oAjax ();
// Whether an error is displayed
// Ajax. error = true;
// The requested page is encoded as 'gb2312' or empty.
// Ajax. encode = 'gb2312 ';
// Callback function
Ajax. callback = function (content ){
// Process the returned content
Eval ('var obj = '+ content );
Document. getElementById ('bk BK '). innerHTML = obj.;
Document. getElementById ('fedcount'). innerHTML = obj. B;
};
Ajax. send (url );
*/

Var xmlhttp = createAjaxObj ();
Try
{

Var params = "action = show & arcID =" + arcID + "& pg =" + pg;
Xmlhttp. abort ();

Xmlhttp. open ("get", "/plus/feedback_ajax.php? "+ Params, true );

Xmlhttp. setRequestHeader ("Content-type", "text/html; charset = gb2312 ");

Xmlhttp. setRequestHeader ("If-Modified-Since", "0 ");

Xmlhttp. setRequestHeader ("Content-length", params. length );

Xmlhttp. setRequestHeader ("Connection", "close ");

Xmlhttp. onreadystatechange = f

Xmlhttp. send (null );

} Catch (ex ){}
Function f ()
{

If (xmlhttp. readyState! = 4 | xmlhttp. status! = 200)
Return;
Var B = xmlhttp. responseText;
Var obj = eval ("(" + B + ")");
Document. getElementById ('bk BK '). innerHTML = obj.;
Document. getElementById ('fedcount'). innerHTML = obj. B;
Document. getElementById ('feedcounttop '). innerHTML = obj. B;
}
}


Function load_allfeedback (arcID, pg ){

Var xmlhttp = createAjaxObj ();
Try
{

Var params = "action = showall & arcID =" + arcID + "& pg =" + pg;
Xmlhttp. abort ();

Xmlhttp. open ("get", "/plus/feedback_ajax.php? "+ Params, true );

Xmlhttp. setRequestHeader ("Content-type", "text/html; charset = gb2312 ");

Xmlhttp. setRequestHeader ("If-Modified-Since", "0 ");

Xmlhttp. setRequestHeader ("Content-length", params. length );

Xmlhttp. setRequestHeader ("Connection", "close ");

Xmlhttp. onreadystatechange = f

Xmlhttp. send (null );

} Catch (ex ){}
Function f ()
{

If (xmlhttp. readyState! = 4 | xmlhttp. status! = 200)
Return;
Var content = xmlhttp. responseText;
Var obj = eval ("(" + content + ")");
// Eval ('var obj = '+ content );
Document. getElementById ('bk BK '). innerHTML = obj.;
// Document. getElementById ('fedcount'). innerHTML = obj. B;
}
}

Function feed_back (){

Var msg = trim (document. getElementById ('msg '). value );
Var arcID = document. getElementById ('arcid'). value;
Var username = trim (document. getElementById ('username'). value );
Var pwd = trim (document. getElementById ('pwd'). value );
Var checkbox = document. getElementById ('notuser ');
If (checkbox. checked)
Var notuser = 1;
Else
Var notuser = 0;


Var xmlhttp = createAjaxObj ();
Try
{

Params = "action = send & arcID =" + arcID + "& msg =" + msg + "& username =" + username
+ "& Pwd =" + pwd + "& notuser =" + notuser;

Xmlhttp. abort ();

Xmlhttp. open ("get", "/plus/feedback_ajax.php? "+ Params, true );

Xmlhttp. setRequestHeader ("Content-type", "text/html; charset = gb2312 ");

Xmlhttp. setRequestHeader ("If-Modified-Since", "0 ");

Xmlhttp. setRequestHeader ("Content-length", params. length );

Xmlhttp. setRequestHeader ("Connection", "close ");

Xmlhttp. onreadystatechange = f

Xmlhttp. send (null );

} Catch (ex ){}
Function f ()
{
If (xmlhttp. readyState! = 4 | xmlhttp. status! = 200)
Return;
Var arr = xmlhttp. responseText. split ("@:");

If (! Arr [1]) {
Alert (xmlhttp. responseText );
}
Else {
If (arr [0]! = 'True ')
Alert (arr [0]);
Alert (arr [2]);
Ck_yzimg ();
Load_feedback (arr [1], 1 );
}
}

}

Function goodbad (fid, arcid, actname, pg ){


Var xmlhttp = createAjaxObj ();

Try
{
Params = "action =" + actname + "& fid =" + fid + "& arcID =" + arcid + "& pg =" + pg;

Xmlhttp. abort ();

Xmlhttp. open ("get", "/plus/feedback_ajax.php? "+ Params, true );

Xmlhttp. setRequestHeader ("Content-type", "text/html; charset = gb2312 ");

Xmlhttp. setRequestHeader ("If-Modified-Since", "0 ");

Xmlhttp. setRequestHeader ("Content-length", params. length );

Xmlhttp. setRequestHeader ("Connection", "close ");

Xmlhttp. onreadystatechange = f

Xmlhttp. send (null );

} Catch (ex ){}
Function f ()
{
If (xmlhttp. readyState! = 4 | xmlhttp. status! = 200)
Return;
Var arr = xmlhttp. responseText. split ("@:");

If (! Arr [1])
Alert (xmlhttp. responseText );
Else {
Alert (arr [0]);
Load_feedback (arr [1], arr [2]);
}
}

}

Function goodbad2 (fid, arcid, actname, pg ){


Var xmlhttp = createAjaxObj ();

Try
{
Params = "action =" + actname + "& fid =" + fid + "& arcID =" + arcid + "& pg =" + pg;

Xmlhttp. abort ();

Xmlhttp. open ("get", "/plus/feedback_ajax.php? "+ Params, true );

Xmlhttp. setRequestHeader ("Content-type", "text/html; charset = gb2312 ");

Xmlhttp. setRequestHeader ("If-Modified-Since", "0 ");

Xmlhttp. setRequestHeader ("Content-length", params. length );

Xmlhttp. setRequestHeader ("Connection", "close ");

Xmlhttp. onreadystatechange = f

Xmlhttp. send (null );

} Catch (ex ){}
Function f ()
{
If (xmlhttp. readyState! = 4 | xmlhttp. status! = 200)
Return;
Var arr = xmlhttp. responseText. split ("@:");

If (! Arr [1])
Alert (xmlhttp. responseText );
Else {
Alert (arr [0]);
Load_allfeedback (arr [1], arr [2]);
}
}

}

Function pg (vl ){
Var arcID = document. getElementById ('arcid'). value;
Load_feedback (arcID, vl );
}
Function pg2 (arcID, vl ){
// Var arcID = document. getElementById ('arcid'). value;
Load_allfeedback (arcID, vl );
}
Function ck_yzimg (){
// Document. all. cknum. value = '';
Document. all. msg. value = '';
Document. all. username. value = '';
Document. all. pwd. value = '';
Document. getElementsByName ('SB ') [0]. disabled = false;
// Document. all. img1.onclick ();
}

Function trim (s ){
Return s. replace (/^ \ s */, ""). replace (/\ s * $ /,"");

}

//////
/*
String. prototype. Contains = function (str ){
Return (this. indexOf (str)>-1 );
};
Var Browser = {
S: navigator. userAgent. toLowerCase ()
};
(Function (B ){
B. IsIE = B. s. Contains ('msie ');
B. IsIE5 = B. s. Contains ('msie 5 ');
B. IsIE6 = B. s. Contains ('msie 6 ');
B. IsIE7 = B. s. Contains ('msie 7 ');
B. IsIE56 =! B. IsIE7 & (B. IsIE6 | B. IsIE5 );
B. IsGecko = B. s. Contains ('gecko ');
B. IsSafari = B. s. Contains ('safari ');
B. IsOpera = B. s. Contains ('Opera ');
B. IsMac = B. s. Contains ('macintosh ');

B. IsIELike = (B. IsIE | B. IsOpera );
B. IsGeckoLike = (B. IsGecko | B. IsSafari );
}) (Browser );
Function oAjax (){
This. req = null;
This. url = '';
This. content = '';
This. type = 'text ';
This. encode = '';
This. asyn = true;
This. action = 'get ';
This. error = false;
}
OAjax. prototype. init = function (){
If (window. XMLHttpRequest ){
This. req = new XMLHttpRequest ();
}
Else if (window. ActiveXObject ){
// IsIE = true;
Try {
This. req = new ActiveXObject ("Msxml2.XMLHTTP ");
}
Catch (e ){
Try {
This. req = new ActiveXObject ("Microsoft. XMLHTTP ");
}
Catch (e ){
This. req = false;
}
}
}
Var self = this;
If (this. req ){
This. req. onreadystatechange = function () {self. listener ()};
}
};

OAjax. prototype. listener = function (){
If (this. req. readyState = 4 ){
If (this. req. status = 200 ){
// Right
Try {
This. callback (Browser. IsIE & this. encode = 'gb2312 '? OAjax. gb2utf8 (this. req. responseBody): (this. type = 'text '? This. req. responseText: this. req. responseXML ));
}
Catch (e ){
This. halt ('[callback]' + e. name + ':' + e. message );
}
}
Else {
// Error
This. halt ('[callback error]' + this. req. status );
}
}
};

OAjax. prototype. send = function (url ){
This. init ();

Url = this. url = url | this. url | '';
This. content = !! This. content? This. content :'';
This. encode = this. encode? This. encode. toLowerCase ():'';
This. asyn = this. asyn = undefined? True :!! This. asyn;
This. action = (this. action = undefined | this. action = 'get ')? 'Get': 'post ';
This. error = this. error = undefined? False :!! This. error;

If (! Url & this. error ){
Alert ('ajax request URL cannot be blank. ');
Return;
}
Try {
This. req. open (this. action, url, this. asyn );
}
Catch (e ){
This. halt ('[open]' + e. name + ':' + e. message );
Return;
}
Try {
This. req. setRequestHeader ('connection', 'close ');
This. req. setRequestHeader ('Accept-Encoding ', 'gzip, deflate ');
This. req. setRequestHeader ('content-type', 'application/x-www-form-urlencoded' + (this. encode? '; Charset =' + this. encode :''));
If (this. req. overrideMimeType & this. encode ){
This. req. overrideMimeType ('text/xml' + (this. encode? '; Charset =' + this. encode :''));
}
This. req. send (this. content );
}
Catch (e ){
This. halt ('[open]' + e. name + ':' + e. message + '\ n ** check whether CORS is enabled. ');
}
};

OAjax. prototype. callback = function (content ){
// Alert (content );
};

// Abort
OAjax. prototype. abort = function (){
This. req. abort ();
};

OAjax. prototype. halt = function (description ){
This. error & alert (description );
};

// Gb2312 to utf8
OAjax. gb2utf8 = function (data ){
Var glbEncode = [];
Gb2utf8_data = data;
ExecScript ("gb2utf8_data = MidB (gb2utf8_data, 1)", "VBScript ");
Var t = escape (gb2utf8_data ). replace (/% u/g ,""). replace (/(. {2 })(. {2})/g, "%$ 2% $1 "). replace (/% ([A-Z].) % (. {2})/g, "@ $1 $2 ");
T = t. split ("@");
Var I = 0, j = t. length, k;
While (++ I <j ){
K = t [I]. substring (0, 4 );
If (! GlbEncode [k]) {
Gb2utf8_char = eval ("0x" + k );
ExecScript ("gb2utf8_char = Chr (gb2utf8_char)", "VBScript ");
GlbEncode [k] = escape (gb2utf8_char). substring (1, 6 );
}
T [I] = glbEncode [k] + t [I]. substring (4 );
}
Gb2utf8_data = gb2utf8_char = null;
Return unescape (t. join ("% "));
}
*/

Core code

The Code is as follows:

Var B = xmlhttp. responseText;
Var obj = eval ("(" + B + ")");
Document. getElementById ('bk BK '). innerHTML = obj.;
Document. getElementById ('fedcount'). innerHTML = obj. B;
Document. getElementById ('feedcounttop '). innerHTML = obj. B;