Mui首页底部导航栏点击页面切换

<!DOCTYPE html>
<html>

    <head>
        <meta charset="utf-8">
        <title>Hello MUI</title>
        <meta name="viewport" content="width=device-width, initial-scale=1,maximum-scale=1,user-scalable=no">
        <meta name="apple-mobile-web-app-capable" content="yes">
        <meta name="apple-mobile-web-app-status-bar-style" content="black">

        <link rel="stylesheet" href="css/mui.min.css">
        <style>
            html,
            body {
                background-color: #efeff4;
            }
        </style>
    </head>

    <body>
        <header class="mui-bar mui-bar-nav">
            <a class="mui-action-back mui-icon mui-icon-left-nav mui-pull-left"></a>
            <h1 id="title" class="mui-title">首页</h1>
        </header>
        <nav class="mui-bar mui-bar-tab">
            <a id="defaultTab" class="mui-tab-item mui-active" href="tab-webview-subpage-about.html">
                <span class="mui-icon mui-icon-home"></span>
                <span class="mui-tab-label">首页</span>
            </a>
            <a class="mui-tab-item" href="tab-webview-subpage-chat.html">
                <span class="mui-icon mui-icon-email"><span class="mui-badge">9</span></span>
                <span class="mui-tab-label">消息</span>
            </a>
            <a class="mui-tab-item" href="tab-webview-subpage-setting.html">
                <span class="mui-icon mui-icon-gear"></span>
                <span class="mui-tab-label">设置</span>
            </a>
        </nav>
        <script src="js/mui.min.js"></script>
        <script type="text/javascript" charset="utf-8">
            mui.plusReady(function(){
                var pages = ["pages/home/home.html","pages/study/study.html","pages/my/my.html"];
                var arr = document.getElementsByClassName("mui-tab-item")
                var styles = {
                    top:"45px",
                    bottom:"51px"
                }
                var pageArr = [];
                var title=document.getElementById('title');
                var slef = plus.webview.currentWebview();
                for(var i=0; i<arr.length; i++){
                    // 有几个选项卡,须要建立几个子页面
                    var page = plus.webview.create(pages[i],pages[i],styles);
                    pageArr.push(page);
                    !function(i){
                        arr[i].addEventListener("tap",function(){
                            // 让当前页面(i)显示,不是当前页面隐藏
                            for(var j=0; j<pageArr.length; j++){
                                if(j!=i) pageArr[j].hide();
                                else pageArr[j].show();
                            }
                            // 设置标题
                            title.innerHTML = this.querySelector('.mui-tab-label').innerHTML;
                            /* 让新建立的webview,追加合并到当前的窗口上。合并成一个窗口。
                             * 目的:将父子窗口合并成一个页面,实现同开同关的效果。 避免点击返回安监室,子页面先关闭,而父页面的头部和尾部没有关闭的BUG。
                             */
                            slef.append(pageArr[i]);
                            
                        })
                    }(i);
                }
                // 默认触发第0个选项卡的tap事件。
                mui.trigger(arr[0],"tap");
            });
        </script>
    </body>

</html>