js 记录用户浏览历史记录

一个实现记录浏览历史的javascript工具
此版本有bug 建议用一下这个
http://www.thinkphp.cn/code/638.html
/**
* History
* 用法
* var his = new History('key'); // 参数标示cookie的键值
* his.add("标题", "连接 比如 http://www.baidu.com", "其他内容")；
* 得到历史数据 返回的是json数据
* var data = his.getList(); // [{title:"标题", "link": "http://www.baidu.com"}]
*
*/
function History(key) {
this.limit = 10; // 最多10条记录
this.key = key || 'y_his'; // 键值
this.jsonData = null; // 数据缓存
this.cacheTime = 24; // 24 小时
}
History.prototype = {
constructor : History
,addCookie: function(name, value, expiresHours, options) {
options = options || {};
var cookieString = name + "=" + escape(value);
//判断是否设置过期时间
if(undefined != expiresHours && expiresHours > 0){
var date = new Date();
date.setTime(date.getTime() + expiresHours * 3600 * 1000);
cookieString = cookieString + "; expires=" + date.toUTCString();
}
var path = options.path ? '; path=' + options.path : '',
domain = options.domain ? '; domain=' + options.domain : '',
secure = options.secure ? '; secure' : '';

//alert(cookieString + path + domain + secure);
document.cookie = cookieString + path + domain + secure;
}
,getCookie: function(name) {
var cookies = document.cookie, //得到本域下的所有cookie -- "userId=828; userName=lisi"
arrCookie = cookies.split(";"),
val = "",
tmpArr = "";
for(var i=0; i tmpArr = arrCookie[i].split("=");
if(tmpArr[0] == name) {
val = unescape(tmpArr[1]);
break;
}
}
return val.toString();
}
,deleteCookie: function(name) {
var date = new Date();
date.setTime(date.getTime()-10000);
document.cookie = name + "=''; expires="+date.toUTCString();
}

,initRow : function(title, link, other) {
return '{"title":"'+title+'", "link":"'+link+'", "other":"'+other+'"}';
}
,parse2Json : function(jsonStr) {
var json = [];
try {
json = JSON.parse(jsonStr);
} catch(e) {
//alert('parse error');return;
json = eval(jsonStr);
}

return json;
}

// 添加记录
,add : function(title, link, other) {
var jsonStr = this.getCookie(this.key);
//alert(jsonStr); return;

if("" != jsonStr) {
this.jsonData = this.parse2Json(jsonStr);

// 排重
for(var x=0; x if(link == this.jsonData[x]['link']) {
return false;
}
}
// 重新赋值 组装 json 字符串
jsonStr = '[' + this.initRow(title, link, other) + ',';
for(var i=0; i if(undefined != this.jsonData[i]) {
jsonStr += this.initRow(this.jsonData[i]['title'], this.jsonData[i]['link'], this.jsonData[i]['other']) + ',';
} else {
break;
}
}
jsonStr = jsonStr.substring(0, jsonStr.lastIndexOf(','));
jsonStr += ']';

} else {
jsonStr = '['+ this.initRow(title, link, other) +']';
}

this.jsonData = this.parse2Json(jsonStr);
this.addCookie(this.key, jsonStr, this.cacheTime);
}
// 得到记录
,getList : function() {
// 有缓存直接返回
if(null != this.jsonData) {
return this.jsonData; // Array
}
// 没有缓存从 cookie 取
var jsonStr = this.getCookie(this.key);
if("" != jsonStr) {
this.jsonData = this.parse2Json(jsonStr);
}

return this.jsonData;
}
// 清空历史
,clearHistory : function() {
this.deleteCookie(this.key);
this.jsonData = null;
}
};

His.rar ( 1.43 KB 下载：84 次 )

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