pjax怎样用
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<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>
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()
和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>
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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