免插件实现wordpress调用历史浏览文章列表

ViewHistory = function() {
 
	this.config = {
		limit: 10,
		storageKey: 'viewHistory',
		primaryKey: 'url'
	};
 
	this.cache = {
		localStorage:  null,
		userData:  null,
		attr:  null
	};
};
 
ViewHistory.prototype = {
 
	init: function(config) {
		this.config = config || this.config;
		var _self = this;
 
		// define localStorage
		if (!window.localStorage && (this.cache.userData = document.body) && this.cache.userData.addBehavior && this.cache.userData.addBehavior('#default#userdata')) {
			this.cache.userData.load((this.cache.attr = 'localStorage'));
 
			this.cache.localStorage = {
				'getItem': function(key) {
					return _self.cache.userData.getAttribute(key);
				},
				'setItem': function(key, value) {
					_self.cache.userData.setAttribute(key, value);
					_self.cache.userData.save(_self.cache.attr);
				}
			};
 
		} else {
			this.cache.localStorage = window.localStorage;
		}
	},
 
	addHistory: function(item) {
		var items = this.getHistories();
		for(var i=0, len=items.length; i<len; i++) {
			if(item[this.config.primaryKey] && items[i][this.config.primaryKey] && item[this.config.primaryKey] === items[i][this.config.primaryKey]) {
				items.splice(i, 1);
				break;
			}
		}
 
		items.push(item);
 
		if(this.config.limit > 0 && items.length > this.config.limit) {
			items.splice(0, 1);
		}
 
		var json = JSON.stringify(items);
		this.cache.localStorage.setItem(this.config.storageKey, json);
	},
 
	getHistories: function() {
		var history = this.cache.localStorage.getItem(this.config.storageKey);
		if(history) {
			return JSON.parse(history);
		}
		return [];
	}
};
 
if(typeof localStorage !== 'undefined' && typeof JSON !== 'undefined') {
    var viewHistory = new ViewHistory();
    viewHistory.init({
        limit: 5,
        storageKey: 'viewHistory',
        primaryKey: 'url'
    });
}
 
var wrap = document.getElementById('recently_viewed');
// 如果 ViewHistory 的实例存在，则可以将页面信息写入。
if(viewHistory) {
    var page = {
        "title": document.getElementsByTagName('title')[0].innerHTML,
        "url": location.href // 这是 primaryKey
        // "time": new Date()
        // "author": ...
        // 这里可以写入更多相关内容作为浏览记录中的信息
    };
    viewHistory.addHistory(page);
} 
// 如果 ViewHistory 的实例存在，并且外层节点存在，则可显示历史浏览记录
if(viewHistory && wrap) {
    // 获取浏览记录
    var histories = viewHistory.getHistories();
 
    // 组装列表
    var list = document.createElement('ul');
    if(histories && histories.length > 0) {
        for(var i=histories.length-1; i>=0; i--) {
            var historyItem = histories[i];
 
            var item = document.createElement('li');
            var itemLink = document.createElement('a');
            itemLink.href = historyItem.url;
            itemLink.innerHTML = historyItem.title;
 
            item.appendChild(itemLink);
            list.appendChild(item);
        }
 
        // 插入页面特定位置
        wrap.appendChild(list);
    }
}

<script type="text/javascript" src="<?php bloginfo('template_url'); ?>/js/history.js"></script>

<div id="recently_viewed"></div>