Use cookies to save website history browsing history example code_javascript skills

In the following code, pay attention to the use of multiple addition judgments of cookies. Friends who are learning how to operate cookies are well worth a look.
Core code:

Copy code The code is as follows:

function glog(evt){
evt=evt?evt:window.event;
var srcElem=(evt.target)?evt.target:evt.srcElement;
try{
while(srcElem.parentNode&&srcElem!=srcElem. parentNode){
if(srcElem.tagName&&srcElem.tagName.toUpperCase()=="A"){
linkname=srcElem.innerHTML;
address=srcElem.href "|";
wlink= linkname " " address;
old_info=getCookie("history_info");
var insert=true;
if(old_info==null){//Determine whether the cookie is empty
insert=true;
}
else{
var old_link=old_info.split("|");
for(var j=0;j<=5;j ){
if(old_link[j ].indexOf(linkname)!=-1)
insert=false;
if(old_link[j]=="null")
break;
}
}
if (insert){
wlink =getCookie("history_info");
setCookie("history_info",wlink);
history_show().reload();
break;
}
else
{


var old_link1=old_info.split("|");
var length=old_link1.length
var newcookie=''
for(var j=0;length<=6?j<=length-1:j<=5;j ){
if(old_link1[j].indexOf(linkname)==-1)
{
if(j==length-1||j==5)
{
newcookie=newcookie old_link1[j]
}
else
{
newcookie=newcookie old_link1[j ] '|'
}
}

}
newcookie=wlink newcookie
setCookie("history_info",newcookie);
history_show().reload();
break;
}
}
srcElem = srcElem.parentNode;
}
}
catch(e){}
return true;
}

Complete effect demonstration code:

<title>Imitate Taobao’s recent browsing history function</title> <meta http-equiv="content-type" content="text/html;charset=gb2312"> <div> </div>Your recently followed content (only the 6 most recently followed content will be displayed and will not appear repeatedly): <div id="history"> </div> <div> <br> <br> <br><a href="http://www.g.cn" target="_blank" onclick="glog()">Please select: <img src="C:WINDOWSsystem32orange-install.ico" id="1" alt="Use cookies to save website history browsing history example code_javascript skills" > </a><a href="#" onclick="glog()"><img src="C:WINDOWSsystem32orange-install.ico" id="2" alt="Use cookies to save website history browsing history example code_javascript skills" > </a><a href="#" onclick="glog()">PHP<img src="C:WINDOWSsystem32orange-install.ico" id="3" alt="Use cookies to save website history browsing history example code_javascript skills" > </a><a href="#" onclick="glog()">ASP.NET<img src="C:WINDOWSsystem32orange-install.ico" id="4" alt="Use cookies to save website history browsing history example code_javascript skills" > </a><a href="#" onclick="glog()">JSP<img src="C:WINDOWSsystem32orange-install.ico" id="5" alt="Use cookies to save website history browsing history example code_javascript skills" > </a><a href="#" onclick="glog()">C#<img src="C:WINDOWSsystem32orange-install.ico" id="6" alt="Use cookies to save website history browsing history example code_javascript skills" > </a><a href="#" onclick="glog()">VB<img src="C:WINDOWSsystem32orange-install.ico" id="7" alt="Use cookies to save website history browsing history example code_javascript skills" > </a><a href="#" onclick="glog()">VC<img src="C:WINDOWSsystem32orange-install.ico" id="8" alt="Use cookies to save website history browsing history example code_javascript skills" > </a><a href="#" onclick="glog()">AJAX<img src="C:WINDOWSsystem32orange-install.ico" id="9" alt="Use cookies to save website history browsing history example code_javascript skills" > </a> </div>DELPHI