How to display tabbar in uniapp
Uniapp's method of displaying tabbar: First, the first item in the pages array represents the application startup page; then configure it in the [page.js] file, the code is ["path" : "pages/show/show ","style" : {"navigationBarT】.
The operating environment of this tutorial: windows7 system, uni-app2.5.1 version, this method is suitable for all brands Computer.
Recommended (free): uni-app development tutorial
How to display tabbar in uniapp :
First, check the official website to learn about tabBar
If the application is a multi-tab application, you can specify the performance of the tab bar through the tabBar configuration item, and the corresponding page displayed when tab switching .
When the position is set to top, the icon will not be displayed
The list in tabBar is an array and can only be configured with at least 2 , up to 5 tabs, and the tabs are sorted in the order of the array.
tabbar may not be rendered in time when switching the first load. You can first load it in the onLoad life cycle of each tabbar page. Pop up a waiting snowflake (hello uni-app uses this method)
The tabbar page is displayed once and remains in the memory. Switching the tabbar page again will only trigger each page. onShow will no longer trigger onLoad.
The tabbar at the top is currently only supported on the WeChat applet. If you need to use the top tab, it is recommended not to use the top setting of the tabbar, but To make the top tab yourself, you can refer to hello uni-app->Template->Top tab.
Second, configure it in the page.js file
{ "pages": [ //pages数组中第一项表示应用启动页, { "path": "pages/index/index", "style": { "navigationBarTitleText": "uni-app" } } ,{ "path" : "pages/show/show", "style" : { "navigationBarTitleText": "show" } } ,{ "path" : "pages/component/component", "style" : { "navigationBarTitleText": "component" } } ], "globalStyle": { "navigationBarTextStyle": "black", "navigationBarTitleText": "uni-app", "navigationBarBackgroundColor": "#F8F8F8", "backgroundColor": "#F8F8F8" }, "tabBar": { "color": "#F0AD4E", "selectedColor": "#3cc51f", "borderStyle": "black", "backgroundColor": "#F8F8F8", "list": [{ "pagePath": "pages/index/index", "iconPath": "static/logo.png", "selectedIconPath": "static/logo.png", "text": "首页" },{ "pagePath": "pages/component/component", "iconPath": "static/logo.png", "selectedIconPath": "static/logo.png", "text": "组件" }, { "pagePath": "pages/show/show", "iconPath": "static/logo.png", "selectedIconPath": "static/logo.png", "text": "展示" }] } }
At first I didn’t know why it was not displayed when I configured two pages in "tabBar", but it was successful after configuring three pages. I don’t know if you have encountered this problem.
Okay, the configuration is successful. , the renderings are as follows
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uniapp development requires the following foundations: front-end technology (HTML, CSS, JavaScript) mobile development knowledge (iOS and Android platforms) Node.js other foundations (version control tools, IDE, mobile development simulator or real machine debugging experience)

UniApp is based on Vue.js, and Flutter is based on Dart. Both support cross-platform development. UniApp provides rich components and easy development, but its performance is limited by WebView; Flutter uses a native rendering engine, which has excellent performance but is more difficult to develop. UniApp has an active Chinese community, and Flutter has a large and global community. UniApp is suitable for scenarios with rapid development and low performance requirements; Flutter is suitable for complex applications with high customization and high performance.

When choosing between UniApp and native development, you should consider development cost, performance, user experience, and flexibility. The advantages of UniApp are cross-platform development, rapid iteration, easy learning and built-in plug-ins, while native development is superior in performance, stability, native experience and scalability. Weigh the pros and cons based on specific project needs. UniApp is suitable for beginners, and native development is suitable for complex applications that pursue high performance and seamless experience.

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