ajax页面中的前进与后台的实现

具体效果参考:http://www.zhangxinxu.com/study/201306/ajax-page-html5-history-api.html?

//以下是自己的部分理解
<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <meta http-equiv="description" content="HTML5 history API与ajax分页 » 张鑫旭-鑫空间-鑫生活"/>
    <meta name="description" content="张鑫旭web前端学习实例页面 HTML5 history API与ajax分页"/>
    <meta name="keywords" content="ajax, 分页, html5, history, API"/>
    <meta name="author" content="张鑫旭, zhangxixnu"/>
    <title>HTML5 history API与ajax分页 » 张鑫旭-鑫空间-鑫生活</title>
    <link rel="stylesheet" href="../css/demo.css" type="text/css"/>
    <link rel="stylesheet" href="../css/hl.css" type="text/css"/>
    <link rel="stylesheet" href="../css/zxx.lib.css" type="text/css"/>
 </head>

<body>
<div id="main">
    <h1>HTML5 history API与ajax分页实例页面</h1>

    <div id="body" class="light">
        <div id="content" class="show">
            <h3>展示</h3>

            <div class="article_new"><a href="http://www.zhangxinxu.com/wordpress/?p=3432">回到相关文章 »</a></div>
            <div class="demo">
                <h4 class="tc f14">上海3月开盘项目汇总</h4>

                <div class="mt10 cho_box z">
                    <b class="cho_line"></b>

                    <div class="fix">
                        <!-- 左边的选菜项 -->
                        <div class="cho_left">
                            <div class="equal_height cho_equal_height"></div>
                            <ul id="choMenu" class="rel cho_menu">
                                <li><a href="ajax.php?area=pudong" class="cho_link">浦东区<span class="ml20">8</span></a>
                                </li>
                                <li><a href="ajax.php?area=baoshan" class="cho_link">宝山区<span class="ml20">7</span></a>
                                </li>
                                <li><a href="ajax.php?area=jiading" class="cho_link">嘉定区<span class="ml20">8</span></a>
                                </li>
                                <li><a href="ajax.php?area=qingpu" class="cho_link">青浦区<span class="ml20">3</span></a>
                                </li>
                                <li><a href="ajax.php?area=minhang" class="cho_link">闵行区<span class="ml20">4</span></a>
                                </li>
                                <li><a href="ajax.php?area=putuo" class="cho_link">普陀区<span class="ml20">2</span></a>
                                </li>
                                <li><a href="ajax.php?area=jinshan" class="cho_link">金山区<span class="ml20">3</span></a>
                                </li>
                                <li><a href="ajax.php?area=songjiang" class="cho_link">松江区<span
                                        class="ml20">3</span></a></li>
                                <li><a href="ajax.php?area=zhabei" class="cho_link">闸北区<span class="ml20">1</span></a>
                                </li>
                                <li><a href="ajax.php?area=fengxian" class="cho_link">奉贤区<span class="ml20">5</span></a>
                                </li>
                                <li><a href="ajax.php?area=huangpu" class="cho_link">黄浦区<span class="ml20">1</span></a>
                                </li>
                                <li><a href="ajax.php?area=changning" class="cho_link">长宁区<span
                                        class="ml20">1</span></a></li>
                                <li><a href="ajax.php?area=jingan" class="cho_link">静安区<span class="ml20">1</span></a>
                                </li>
                                <li><a href="ajax.php?area=zhoubian" class="cho_link">上海周边<span
                                        class="ml20">1</span></a></li>
                            </ul>
                        </div>

                        <!-- 右侧主列表 -->
                        <div class="cell">
                            <ul class="fix cho_list_title">
                                <li class="l pct20">楼盘名</li>
                                <li class="l pct30">价格</li>
                                <li class="cell">项目地址</li>
                            </ul>
                            <div id="listBox">
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script>
    var  eleMenuOn = null,
         eleListBox = $("#listBox"),
         tempList = $("#tempChoList").html(),
         clMenuOn = "cho_link_on";

    String.prototype.temp = function (obj) {
        return this.replace(/\$\w+\$/gi, function (matchs) {
            var returns = obj[matchs.replace(/\$/g, "")];
            return (returns + "") == "undefined" ? "" : returns;
        });
    };

    var eleMenus = $("#choMenu a").bind("click", function (event) {
       // alert(2);
        var query = this.href.split("?")[1];
        if (history.pushState && query && !$(this).hasClass(clMenuOn)) {
            eleMenuOn && eleMenuOn.removeClass("cho_link_on");
            eleMenuOn = $(this).addClass("cho_link_on");
            eleListBox.html('<div class="cho_loading"></div>');
            $.ajax({
                url: this.href,
                dataType: "json",
                success: function (data) {
                    var html = '';
                    if ($.isArray(data)) {
                        $.each(data, function (i, obj) {
                            html += tempList.temp(obj);
                        });
                    }
                    eleListBox.html(html || '<div class="tc cr pt30">丫的没数据啊！</div>');
                },
                error: function () {
                    eleListBox.html('<div class="tc cr pt30">数据获取失败！</div>');
                }
            });

            // history处理
            var title = "上海3月开盘项目汇总-" + $(this).text().replace(/\d+$/, "");
            document.title = title;
            if (event && /\d/.test(event.button)) {
                history.pushState({title: title}, title, location.href.split("?")[0] + "?" + query);
            }
        }
        return false;
    });
    //该方法有多重用处 1. 页面初始载入时第一次调用,带参第二次调用  2.后退 前进是调用
    var fnHashTrigger = function (target) {
        var query = location.href.split("?")[1], eleTarget = target || null;
        if (typeof query == "undefined") {     //首次载入

             //首次进入时
            if (eleTarget = eleMenus.get(0)) {   //是"=" 先赋值,然后在判断eleTarget是否为空
                history.replaceState(null, document.title, location.href.split("#")[0] + "?" + eleTarget.href.split("?")[1] +"#"+ location.hash);
                fnHashTrigger(eleTarget);
            }
        } else {
            eleMenus.each(function () {
                if (eleTarget === null && this.href.split("?")[1] === query) {  ///eleTarget === null 在第二次调用时起作用,

                    eleTarget = this;
                }
            });

            if (!eleTarget) {
                history.replaceState(null, document.title, location.href.split("?")[0]+"#"+location.hash);
                fnHashTrigger();
            } else {
                $(eleTarget).trigger("click");
            }
        }
    };
    //初始载入时 history.pushState 不为空
    if (history.pushState) {
        window.addEventListener("popstate", function () {     //popstate 点击浏览器的前进后台 、或者调用history。go（back）时触发该事件
            fnHashTrigger();
        });
        // 默认载入
        //alert("00");
        fnHashTrigger();         //初始载入时调用
       // alert(3);
    }
</script>

</body>
</html>

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ajax页面中的前进与后台的实现

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