http://www.thinkphp.cn/code/513.html
另外提供html5版
http://www.thinkphp.cn/code/669.html
/**
* History
* @author yulipu
*/
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
this.path = '/'; // cookie path
}
History.prototype = {
constructor : History
,setCookie: function(name, value, expiresHours, options) {
options = options || {};
var cookieString = name + '=' + encodeURIComponent(value);
//判断是否设置过期时间
if(undefined != expiresHours){
var date = new Date();
date.setTime(date.getTime() + expiresHours * 3600 * 1000);
cookieString = cookieString + '; expires=' + date.toUTCString();
}
var other = [
options.path ? '; path=' + options.path : '',
options.domain ? '; domain=' + options.domain : '',
options.secure ? '; secure' : ''
].join('');
document.cookie = cookieString + other;
}
,getCookie: function(name) {
// cookie 的格式是个个用分号空格分隔
var arrCookie = document.cookie ? document.cookie.split('; ') : [],
val = '',
tmpArr = '';
for(var i=0; i<arrCookie.length; i++) {
tmpArr = arrCookie[i].split('=');
tmpArr[0] = tmpArr[0].replace(' ', ''); // 去掉空格
if(tmpArr[0] == name) {
val = decodeURIComponent(tmpArr[1]);
break;
}
}
return val.toString();
}
,deleteCookie: function(name) {
this.setCookie(name, '', -1, {"path" : this.path});
//console.log(document.cookie);
}
,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<this.jsonData.length; 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<this.limit-1; 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) +']';
}
//alert(jsonStr);
this.jsonData = this.parse2Json(jsonStr);
this.setCookie(this.key, jsonStr, this.cacheTime, {"path" : this.path});
}
// 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;
}
}; 