The tool function and initialization method of Youku JS script

Defining log output functions

(function () {if (window[' console ')} {return;} window[' console '] = {log:function () {},clear:function () {},debug:function () {},error:function () {},info:function () {} , Count:function () {},time:function () {},trace:function () {},warn:function () {}}}) ();

Defines the global method that implements the address of the response that loads the CDN

(function () {var url = ' bad ' url, watch browser console error. ', Local = window. Local, err = function (msg) {if (console && console.error) {console.error (' [CDN function Error] ' + msg + '). ); }}, CDN = function (path, type) {//path rule if (Path.charat (0)! = '/') {err (' @param path:rel Ative to root start by/'); return URL; }//global block if (!            Local) {err (' @see beta-18932:template funciton {nova->globajs} '); return URL;}            var key = ' Release_tag ', Version = Local[key];            Version define if (!version) {err (' @see Local: ' + key + ' not defined '); return URL;}            Server Define key = Type.touppercase () + ' server ', server = Local[key];            if (!server) {err (' @see Local: ' + key + ' not defined. '); return URL;}  Bad server define if (!server.match (/^ (HTTP|HTTPS)/)} {Err (' @see Local: ' + key + ' is server, add Protocol '); return URL;  }          if (Server.match (/\/$/)) {err (' @see Local: ' + key + ' is server, not ending by \ \ '); return URL;}            url = server+ '/' + version + path;        return URL;        };        Window.cdn_jsurl = function (path) {return CDN (path, ' JS ');};        Window.cdn_cssurl = function (path) {return CDN (path, ' CSS ');}; Window.cdn_imgurl = function (path) {return CDN (path, ' img ');};}) ();

        Full station monitoring connection events

Listen for the entire station link Click event, check for the existence of the Data-from property, and add the from parameter to the HREF attribute (function (o) {if (!o) {return false;} if (!o.event) {return false;} var checkfromdomain = function (href) {var domain = ["youku.com/v_show/", "youku.com/show_page/", "youku.com/u/u"];for ( var i=0,length=domain.length; i<length; i++) {if (Href.indexof (Domain[i])!==-1) {return true;}}} O.nova_init_hook_data_from = function () {O.event.observe (document, "click", Function (EV) {if (!ev) ev = O.event;var target = Ev.target | | Ev.srcelement;if (!target) {return;} if (target.tagname! = ' A ' && target.parentnode) {target = Target.parentnode;}  if (Target.tagname = = ' A ') {var data_from = Target.getattribute ("Data-from"); var from = Data_from | | window.pvdatafrom;var href = Target.getattribute ("href"), if (from && from! = ") {if (href && href.indexof (' http ') = = = 0 &&am P Href.indexof ('? from ') = = =-1 && href.indexof (' &from ') = = = 1 && checkfromdomain (href)) {from = encode Uricomponent (from), if (Href.indexof ('? ')!==-1) {TargEt.setattribute ("href", href+ ' &from= ' +from);} Else{target.setattribute ("href", href+ '? from= ' +from);}}});} }) (window);

Generate a timestamp + 6-bit random number string

var getpvid = function (len) {var randchar=["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "s", "T", "U", "V", "w", "X", "Y", "Z", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J" "," K "," L "," M "," N "," O "," P "," Q "," R "," S "," T "," U "," V "," W "," X "," Y "," Z "];var i=0;var r=" ", var d=new Date (); for (i=0;i< len;i++) {         var index=parseint (Math.random () *math.pow (10,6))%randchar.length;          R+=randchar[index];} Return D.gettime () +r;}

Jsonp Asynchronous Call method

var jsonp = function (src, callback) {if (typeof (Arguments[0])! = ' string ') {return;} var callback = typeof (Arguments[1]) = = ' function '? Callback:function () {};var head = document.getElementsByTagName (' head ') [0];var script = Document.createelement (' Script '); script.type = ' text/javascript '; script.src = src;head.appendchild (script); if (!/*@[email protected]*/0) { Script.onload = function () {callback (); This.parentNode.removeChild (this);}} Else{script.onreadystatechange = function () {if (this.readystate = = ' Loaded ' | | this.readystate = = ' complete ') {callback ( ); This.parentNode.removeChild (this);}}}

Filter Empty strings

function LTrim (s) {return s.replace (/^ (\s*| *)/, "");} function RTrim (s) {return s.replace (/(\s*| *) $/, "");} function Trim (s) {return LTrim (RTrim (s));}

Determine if the value is null

/** * Determine if the variable is null * undefined, NULL, ', FALSE, 0, [], {} return True, otherwise false */function empty (v) {    switch (typeof v) {        C Ase ' undefined ': return true;        Case ' String '    : if (Trim (v). Length = = 0) return true;        Case ' Boolean '   : if (!v) return true;        Case ' number '    : if (0 = = = v) return true;        Case ' object '    :            if (null = = = v) return true;            if (undefined!== v.length && v.length==0) return true;            For (var k in V) {return false;} return true;            break;    }    return false;}

Determine if you are logged in by cookie

var islogin = function () {var username = '; var ca = Document.cookie.split (';'); for (Var i=0;i < ca.length;i++) {var c = ca[i];while (C.charat (0) = = ") c = c.substring (1,c.length); if (C.indexof (' yktk= ') ) = = 0) {var u_info = decode64 (decodeURIComponent (c). Split ("|") [3]); if (U_info.indexof (",") >-1 && u_info.indexof ("NN:") >-1 && u_info.indexof ("ID:") >-1) {Userna me = U_info.split (",") [1].split (":") [1]; if (username! = ") Break;}}} return (username = = ")? False:true;}

Decide whether to email

function isemail (mail) {return (New RegExp (/^\w+ (-\w+) | ( \.\w+)) *\@[a-za-z0-9]+ ((\.| -) [a-za-z0-9]+] *\. [A-za-z] {1,4}$/). Test (mail));}

function U8_16 (_1) {
var i, Len, C;
var char2, Char3;
var ary = [];
len = _1.length;
i = 0;
while (I < Len) {
c = _1.charcodeat (i++);
Switch (c >> 4) {
Case 0:
Case 1:
Case 2:
Case 3:
Case 4:
Case 5:
Case 6:
Case 7:
0xxxxxxx
Ary.push (_1.charat (i-1));
Break
Case 12:
Case 13:
110x xxxx 10xx xxxx
CHAR2 = _1.charcodeat (i++);
Ary.push (String.fromCharCode ((C & 0x1F) << 6) | (Char2 & 0x3F)));
Break
Case 14:
1110 xxxx 10xx xxxx 10xx xxxx
CHAR2 = _1.charcodeat (i++);
CHAR3 = _1.charcodeat (i++);
Ary.push (String.fromCharCode ((C & 0x0F) << 12) | ((Char2 & 0x3F) << 6) | ((Char3 & 0x3F) << 0)));
Break
}
}
Return Ary.join (");
}
function Decode64 (_1) {
if (!_1) return ';
var _2 = "Abcdefghijklmnop" + "qrstuvwxyzabcdef" + "GHIJKLMNOPQRSTUV" + "wxyz0123456789+/" + "=";
var _3 = "";
var _4, _5, _6;
var _7, _8, _9, _a;
var i = 0;
_1 = _1.replace (/[^a-za-z0-9\+\/\=]/g, "");
do {
_7 = _2.indexof (_1.charat (i++));
_8 = _2.indexof (_1.charat (i++));
_9 = _2.indexof (_1.charat (i++));
_a = _2.indexof (_1.charat (i++));
_4 = (_7 << 2) | (_8 >> 4);
_5 = ((_8 &) << 4) | (_9 >> 2);
_6 = ((_9 & 3) << 6) | _a;
_3 = _3 + String.fromCharCode (_4);
if (_9! = 64) {
_3 = _3 + String.fromCharCode (_5);
}
if (_a! = 64) {
_3 = _3 + String.fromCharCode (_6);
}
} while (I < _1.length);
Return u8_16 (_3);
}
function Encode64 (str)
{
if (!STR) return ';
str = str.tostring ();
var base64encodechars = "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz0123456789+/";
var base64decodechars = new Array (
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, 62,-1,-1,-1, 63,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61,-1,-1,-1,-1,-1,-1,
-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,-1,-1,-1,-1,-1,
-1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,-1,-1,-1,-1, 1
);
var out, I, Len;
var C1, C2, C3;
len = str.length;
i = 0;
out = "";
while (I < Len) {
C1 = Str.charcodeat (i++) & 0xFF;
if (i = = len)
{
Out + = Base64encodechars.charat (C1 >> 2);
Out + = Base64encodechars.charat ((C1 & 0x3) << 4);
Out + = "=";
Break
}
C2 = Str.charcodeat (i++);
if (i = = len)
{
Out + = Base64encodechars.charat (C1 >> 2);
Out + = Base64encodechars.charat (((C1 & 0x3) << 4) | ((C2 & 0xF0) >> 4));
Out + = Base64encodechars.charat ((C2 & 0xF) << 2);
Out + = "=";
Break
}
C3 = Str.charcodeat (i++);
Out + = Base64encodechars.charat (C1 >> 2);
Out + = Base64encodechars.charat (((C1 & 0x3) << 4) | ((C2 & 0xF0) >> 4));
Out + = Base64encodechars.charat (((C2 & 0xF) << 2) | ((C3 & 0xC0) >>6));
Out + = Base64encodechars.charat (C3 & 0x3F);
}
return out;
}
function Encodeuid (UID)
{
if (!uid) return ';
if (UID << 2 > 0) {
var enuid = ' U ' + encode64 (UID << 2);
}else{
UID exceeds limit
var enuid = ' U ' + encode64 (UID * 4);
}
return enuid;
}

The tool function and initialization method of Youku JS script