HBuilderX打包web网站之wap2app设置底部菜单tabBar

 上面是真实案例，首页、在看、我的就是我设置的菜单，还可以设置图标，填写图片网络地址就行。

下面是代码，可以直接用：

第一步，先下载2个文件或者复制也行，那就新建吧:

分别新建一个css文件，命名为   __wap2apptabbar.css

 .tab {
     position: absolute;
     left: 0;
     right: 0;
     bottom: 0;
     height: 50px;
 }
 
 .tab-inner {
     display: table;
     table-layout: fixed;
     background-color: #f7f7f7;
     -webkit-box-shadow: 0 0 1px rgba(0, 0, 0, .85);
     box-shadow: 0 0 1px rgba(0, 0, 0, .85);
     -webkit-backface-visibility: hidden;
     backface-visibility: hidden;
 }
 
 .tab-item {
     display: table-cell;
     width: 1%;
     height: 50px;
     overflow: hidden;
     color: #666;
     text-align: center;
     text-overflow: ellipsis;
     white-space: nowrap;
     vertical-align: middle;
 }
 
 .tab-item-icon img {
     width: 100%;
     height: 100%;
 }
 
 .tab-item .tab-item-icon img:nth-child(1) {
     display: block;
 }
 
 .tab-item .tab-item-icon img:nth-child(2) {
     display: none;
 }
 
 .tab-item.active .tab-item-icon img:nth-child(1) {
     display: none;
 }
 
 .tab-item.active .tab-item-icon img:nth-child(2) {
     display: block;
 }
 
 .tab-item-label {
     display: block;
     overflow: hidden;
     font-size: 12px;
 }
 
 .tab-item-icon {
     margin: 0 auto;
     width: 24px;
     height: 24px;
 }
 
 .tab-item-icon-bars{
 
 }
 
 .tab.no-label .tab-item-icon {
     margin: 0 auto;
     width: 40px;
     height: 40px;
 }
 
 .tab.no-icon .tab-item-label {
     font-size: 16px;
 }
 
 .tab-item.active {
     color: #FF5777;
 }

第个文件命名为：__wap2apptabbar.js

(function(window, document) {
    var TabBar = function(options) {
        options = options || {};
 
        this.tabClass = options.tabClass || 'tab'; //容器元素
        this.itemClass = options.itemClass || 'tab-item'; //选项样式名称
        this.selectedClass = options.selectedClass || 'active'; //选项激活样式名称
 
        this.itemIconClass = options.itemIconClass || 'tab-item-icon'; //选项图标样式名称
        this.itemLabelClass = options.itemLabelClass || 'tab-item-label'; //选项标题样式名称
 
        this.list = options.list || []; //选项列表
 
        this.selected = 0;
 
        if (this.list.length) {
            this.render();
        }
 
        this.tabElem = document.querySelector('.' + this.tabClass);
        this.itemElems = [].slice.call(document.querySelectorAll('.' + this.itemClass));
 
        this.handleOldVersion();
 
        this.initEvent();
 
    };
    var proto = TabBar.prototype;
 
    proto.refresh = function() {
        this.itemElems = [].slice.call(document.querySelectorAll('.' + this.itemClass));
    };
 
    proto.handleOldVersion = function() {
        var list = this.list;
        if (!list.length) {
            for (var i = 0; i < this.itemElems.length; i++) {
                list.push({
                    url: this.itemElems[i].getAttribute('href')
                });
            }
        }
        window.__wap2app_old_tab_item_urls = [];
        for (var i = 0; i < list.length; i++) {
            __wap2app_old_tab_item_urls.push(list[i].url);
        }
    };
    proto.render = function() {
        var tabbarElem = document.createElement('nav');
        tabbarElem.className = this.tabClass;
        if (!this.list[0].iconPath) {
            tabbarElem.className = tabbarElem.className + ' no-icon';
        }
        if (!this.list[0].text) {
            tabbarElem.className = tabbarElem.className + ' no-label';
        }
        var html = [];
        for (var i = 0; i < this.list.length; i++) {
            html.push(this.renderItem(this.list[i], i));
        }
        tabbarElem.innerHTML = '<div class="' + this.tabClass + '-inner">' + html.join('') + '</div>';
        document.body.appendChild(tabbarElem);
    };
    proto.renderItem = function(item, index) {
        var isSelected = this.selected === index;
        var html = ['<div class="' + this.itemClass + (isSelected ? (' ' + this.selectedClass) : '') + '" href="' + item.url + '">'];
        if (item.iconPath) {
            html.push('<div class="' + this.itemIconClass + '"><img src="' + item.iconPath + '"/><img src="' + item.selectedIconPath + '"/></div>');
        }
        if (item.text) {
            html.push('<div class="' + this.itemLabelClass + '">' + item.text + '</div>');
        }
        html.push('</div>');
        return html.join('');
    };
    proto.initEvent = function() {
        if (!this.tabElem) {
            throw new Error('未找到TabBar容器');
        }
        if (!this.itemElems || !this.itemElems.length) {
            throw new Error('TabBar容器内无选项');
        }
        var self = this;
        //全局回调
        window.__wap2app_change_tab_callback = function(e) {
            self.highlight(e.index);
        };
 
        this.tabElem.addEventListener('click', function(e) {
            var target = e.target;
            for (; target && target !== self.tabElem; target = target.parentNode) {
                var index = self.itemElems.indexOf(target);
                if (~index) {
                    if (index === self.selected) {
                        return;
                    }
                    e.preventDefault();
                    e.stopPropagation();
                    var url = target.getAttribute('href');
                    if (!url) {
                        throw new Error('未指定选项打开的链接地址');
                    }
                    self.highlight(index);
                    var id = plus.runtime.appid;
                    wap2app.switchTab(id, id + '_' + index, url);
                }
            }
        });
    };
    proto.highlight = function(index) {
        this.itemElems[this.selected].classList.remove(this.selectedClass);
        var currentItemElem = this.itemElems[index]
        currentItemElem.classList.add(this.selectedClass);
        if (currentItemElem.scrollIntoView) {
            currentItemElem.scrollIntoView();
        }
        this.selected = index;
    };
    window.TabBar = TabBar;
})(window, document);

第三步，取消注释：

 第四步，在client_index.html设置tabBar代码：

<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<meta name="viewport" content="viewport-fit=cover,width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
		<title></title>
		<!--使用本地选项卡时，将如下两行代码注释取消-->
		<link rel="stylesheet" type="text/css" href="__wap2apptabbar.css" />
		<script src="__wap2apptabbar.js" type="text/javascript" charset="utf-8"></script>
		<style type="text/css">  
		    /*自定义选项卡文字颜色示例*/  
		    .tab-item {  
		        color: black;//选项卡文字默认为黑色  
		    }  
		    .tab-item.active {  
		        color: blue;//选项卡文字高亮时为蓝色  
		    }  
		</style>
	</head>
	
	<body>
		
		<script>  
		    new TabBar({  
		        list: [{  
		            url: "https://huamaotianxing.com/",  
		            text: "首页",  
		            iconPath: 'home.png',  
		            selectedIconPath: 'home-selected.png'  
		        }, {  
		            url: "https://huamaotianxing.com/open/course/explore",  
		            text: "在看",  
		            iconPath: 'tab1.png', //本地图标  
		            selectedIconPath: 'tab1-selected.png'  
		        }, {  
		            url: "https://huamaotianxing.com/my/courses/learning",  
		            text: "我的",  
		            iconPath: 'http://m.exampple.com/imgs/about.png',//网络图标  
		            selectedIconPath: 'http://m.exampple.com/imgs/about-selected.png'  
		        }]  
		    });  
		</script>
		
	</body>
 
</html>

第6步，在sitemap.json文件配置一下：

{
    "global": {
        "webviewParameter": {
            "titleNView": {
                "autoBackButton": true,
                "backgroundColor": "#f7f7f7",//导航栏背景色
                "titleColor": "#000000",//标题颜色
                "titleSize": "17px"
            },
            "statusbar": {
                //系统状态栏样式(前景色)
                "style": "dark"
            },
            "appendCss": "",
            "appendJs": ""
        },
        "easyConfig": {}
    },
    "pages": [
        {
            "webviewId": "__W2A__huamaotianxing.com",//首页
            "matchUrls": [
                {
                    "href": "https://huamaotianxing.com"
                }, {
                    "href": "https://huamaotianxing.com/"
                }
            ],
            "webviewParameter": {
                "titleNView": false,
                "statusbar": {
                    //状态条背景色，
                    //首页不使用原生导航条，颜色值建议和global->webviewParameter->titleNView->backgroundColor颜色值保持一致
                    //若首页启用了原生导航条，则建议将首页的statusbar配置为false，这样状态条可以和原生导航条背景色保持一致；
                    "background": "#f7f7f7"
                },
				"tabBar": {//选项卡配置，仅首页支持  
				            "height": "50px",//选项卡高度，默认为50px  
				            "list": [  
				                {  
				                    "url": "https://huamaotianxing.com/" //tab1页面地址  
				                }, {  
				                    "url": "https://huamaotianxing.com/open/course/explore" //tab2页面地址  
				                }, {  
				                    "url": "https://huamaotianxing.com/my/courses/learning"  //tab3页面地址  
				                }  
				            ]  
				        }  
            }
        }
    ]
}

第7步，运行到真机上测试了，ok了。

官方文档说明：

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