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使用Cookies保存网站历史浏览记录实例代码

时间：2021-07-01 10:21:17 帮助过：35人阅读

下面的代码，注意利用了cookies的多个增加判定等，学习cookies操作的朋友，非常值得一看。
核心代码:
代码如下:
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){//判断cookie是否为空
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;
}

完整的效果演示代码:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<title>仿淘宝网的最近浏览记录功能</title> 
<meta http-equiv="content-type" content="text/html;charset=gb2312"> 
<script language="javascript"> 
//cookie相关函数 
function getCookieVal(offset){ 
var endstr = document.cookie.indexOf (";", offset); 
if (endstr == -1) endstr = document.cookie.length; 
return unescape(document.cookie.substring(offset, endstr)); 
} 
function getCookie(name){ 
var arg = name + "="; 
var alen = arg.length; 
var clen = document.cookie.length; 
var i = 0; 
while (i < clen) { 
var j = i + alen; 
if (document.cookie.substring(i, j) == arg) return getCookieVal (j); 
i = document.cookie.indexOf(" ", i) + 1; 
if (i == 0) break; 
} 
return null; 
} 
function setCookie(name,value){ 
var exp = new Date(); 
exp.setTime (exp.getTime()+3600000000); 
document.cookie = name + "=" + value + "; expires=" + exp.toGMTString(); 
} 
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){//判断cookie是否为空 
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 
{

} 
newcookie=wlink+newcookie 
setCookie("history_info",newcookie); 
history_show().reload(); 
break; 
} 
} 
srcElem = srcElem.parentNode; 
} 
} 
catch(e){} 
return true; 
} 
//document.onclick=glog; 
function history_show(){ 
var history_info=getCookie("history_info"); 
var content=""; 
if(history_info!=null){ 
history_arg=history_info.split("|"); 
var i; 
for(i=0;i<=5;i++){ 
if(history_arg[i]!="null"){ 
var wlink=history_arg[i].split("+"); 
content+=("<font color='#ff000'>↑</font>"+""+wlink[0]+"<br>"); 
} 
document.getElementById("history").innerHTML=content; 
} 
} 
else{ 
document.getElementById("history").innerHTML="对不起，您没有任何浏览记录！"; 
} 
} 
</script> 
</head> 
<body> 
您最近关注的内容（只显示6个最近关注的内容并且不会重复出现）： 
 
<script language="javascript">history_show();</script> 
 
 
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使用Cookies保存网站历史浏览记录实例代码

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