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pjax怎样用

Jun 06, 2016 pm 08:15 PM
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求用过的人来回答 教会必定报酬

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求用过的人来回答 教会必定报酬

<code>window.history.pushState(state, title, url);
// https://developer.mozilla.org/zh-CN/docs/Web/API/History/pushState
// @状态对象:  记录历史记录点的额外对象,可以为空.
// @页面标题:  目前所有浏览器都不支持.
// @可选的URL: 浏览器不会检查URL是否存在,只改变URL.URL必须同域,不能跨域.</code>
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PJAX其实就是HTML5 window.history.pushState(state, title, url)这个新的API加上传统的AJAX技术,一般用来实现无刷新的页面加载.pushState的作用主要是:改变URL和添加返回历史.这样AJAX无刷新加载页面后,用户还可以正常进行后退和前进,JS的window.history.back()window.history.forward()也能正常工作.下面就是一个用pushState + jQuery AJAX实现的无刷新的页面加载,不支持的浏览器则自动退化成打开原始的链接打开形式.

<code>index.php:



<meta charset="utf-8">
<title>Index</title>
<script src="jquery.js"></script>


<div id="main">
    <a href="data.php">data.php</a>
    <script>
    $(document).ready(function() {
        $('#main').on('click','a',function(e) {
            if(window.history.pushState) {
                e.preventDefault(); //不跟随原链接跳转
                url = $(this).attr('href');
                $.ajax({
                    async: true,
                    type: 'GET',
                    url: 'data.php',
                    data: 'pjax=1',
                    success: function(data) {
                        window.history.pushState(null, null, url); //改变URL和添加返回历史
                        document.title = data.title; //设置标题
                        $('#main').html(data.main); //设置内容
                    }
                });
            } else {
                return; //低版本IE8等不支持HTML5 pushState,直接返回进行链接跳转
            }
        });
    });
    </script>
</div>



data.php:
<?php if(isset($_GET['pjax'])) {
    //PJAX请求返回JSON
    $arr['title'] = 'Data';
    $arr['main'] = '<h1>Data Content';
    //下面这两句是把PHP数组转成JSON对象返回
    header('Content-Type: application/json; charset=utf-8');
    echo json_encode($arr);
} else {
    //常规请求返回HTML
?>



<meta charset="utf-8">
<title>Data</title>
<script src="jquery.js"></script>


<div id="main"><h1 id="Data-Content">Data Content</h1></div>


<?php } ?></code>
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注意,JS统计代码应该放到main块里面才能正常统计页面访问数.

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