How to create side navigation bar in uniapp

As mobile client applications continue to develop, designers continue to explore and improve user interaction methods, among which side navigation bars are widely used in many applications. If you are using the Uniapp framework to develop applications, then in this article, I will introduce to you how to use the Uniapp framework to quickly implement a side navigation bar.

1. The concept of navigation bar

First of all, we need to understand what a navigation bar is and what its role is in the application. The navigation bar is a UI control, usually located at the top or side of the page, that helps users quickly locate and access various parts of the application. In mobile applications, the navigation bar usually has the following functions:

1. Navigation function: It allows users to quickly switch to other pages in the application, often displayed in the form of tabs.

2. Search function: allows users to quickly search for content in the application, often displayed in the form of a search box.

3. Operation function: allows users to perform some page-related operations, such as creating, editing, sharing, deleting, etc.

2. How to develop a side navigation bar in Uniapp

In the Uniapp framework, the method of developing a side navigation bar is as follows:

1. First, in your Create a new page in the Uniapp project. You can right-click the "pages" folder in the project directory tree and select "New Page".

2. During the process of creating a new page, you need to select the "Bottom Tab" page type and select the "Enable Header" and "Enable Sidebar Menu" options.

3. In page design, if you need to create menu items, you can use the drawer menu control in the "iView UI Component Library". First add the following code to the page:

<!-- 抽屉菜单 -->
<i-drawer>
  <!-- 菜单项 -->
  <view>
    <view>主页</view>
    <view>关于我们</view>
    <view>联系我们</view>
  </view>
</i-drawer>
<!-- 头部导航栏 -->
<i-navbar>
  <i-nav-item>
    <!-- 展示图标 -->
    <i-icon></i-icon>
  </i-nav-item>
  <i-nav-item>{{ title }}</i-nav-item>
</i-navbar>
<!-- 页面内容 -->
<view>
  <!-- 这里放一些内容 -->
</view>

The above code shows a typical page structure in Uniapp, including a drawer menu, a header navigation bar and the main content of the page. In the specific implementation, you can modify the content of the menu item, add a new menu item, and implement the response event of the menu item click in the code.

4. Finally, add the following content in the JS code to complete the opening and closing of the drawer menu:

<script><br/> import iView from 'view-design';<br/> export default {</script>

data() {
  return {
    title: '主页',
    showDrawer: false
  };
},
methods: {
  navigateTo(path) {
    this.title = path;
    uni.navigateTo({
      url: '/pages/' + path + '/' + path
    });
  },
  beforeCloseDrawer(done) {
    const self = this;
    iView.Modal.confirm({
      title: '确认',
      content: '确定要关闭吗？',
      onOk: () => {
        done();
      },
      onCancel: () => {
        self.showDrawer = true;
      }
    });
  }
}

};

In the above code, we define a "showDrawer" variable to control the opening and closing of the drawer menu. A new "navigateTo" method is added to respond to the click event of the menu item, in which the "uni.navigateTo" method is used to implement page navigation operations. Finally, we used the "Modal.confirm" method in the iView component library to add a confirmation dialog box before closing the drawer menu to improve the user interaction experience.

3. Summary

Through the introduction of this article, we have learned how to quickly implement the side navigation bar in mobile applications in the Uniapp framework. This feature not only improves the usability and accessibility of the application, but also greatly facilitates user operation and navigation. If you are developing a mobile application in the Uniapp framework, I hope this article can help you.

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