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使用Cookies保存网站历史浏览记录实例代码_javascript技巧

来源：福韦美食网

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
{

}
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:
<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"> //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 { 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; } //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）： history_show();</ script> <p>请选择：<br> PHP ASP.NET JSP C# VB VC AJAX DELPHI </body> </html>
[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]