How uniapp implements the function of displaying different content on click

With the popularity and development of mobile devices and applications, more and more companies are beginning to use these technologies to digitize their businesses. For today's application development, an essential element is a good user experience. Among them, page interaction is one of the most important experiences. In this regard, uniapp provides a variety of ways to achieve various page interactions. This article will introduce in detail how uniapp implements the function of displaying different content on click.

Introduction to uniapp

Uniapp is a development framework based on Vue.js. It supports a set of codes that can be run on multiple terminals. Developers only need to write code once to generate applications for multiple platforms at the same time. . At present, uniapp has supported WeChat applet, Baidu applet, Alipay applet, QQ applet, H5 and App. Compared with traditional application development, the development speed and efficiency of uniapp have been significantly improved.

Click to display different content application scenarios

In actual application scenarios, clicking to display different content is a common requirement. For example, in an application, users need to display different content based on the options they choose. For example, in a restaurant application, users can choose different set meals according to their own tastes, and the corresponding dishes and prices will be displayed after clicking. This type of interaction can effectively help users understand different options and make choices based on their needs, thereby optimizing user experience.

Uniapp implements the method of clicking to display different content

To implement the function of clicking to display different content, uniapp provides a variety of methods. The following are three commonly used methods. A brief introduction is as follows:

v-show command

The v-show command can control whether specific elements or components are displayed to achieve the effect of switching content. In the template, we can bind the v-show attribute of the element or component that needs to be controlled to a variable, and switch the display and hiding of the content by updating the value of the variable. The code is as follows:

<view v-show="isActive">这是第一个内容</view>
<view v-show="!isActive">这是第二个内容</view>
<button @click="toggle()">点击切换内容</button>

In the above code, isActive is a Boolean variable, and toggle() is a method used to change the state of isActive when the user clicks the button:

export default {
  data() {
    return {
      isActive: true
    }
  },
  methods: {
    toggle() {
      this.isActive = !this.isActive;
    }
  }
}

v -if directive

v-if directive can control whether specific elements or components are rendered on the page to achieve the effect of switching content. Unlike the v-show instruction, the v-if instruction needs to re-render elements or components when switching content. In the template, we can bind the v-if attribute of the element or component that needs to be controlled to a Boolean variable, and switch the display and hiding of the content by updating the value of the variable. The code is as follows:

<view v-if="isActive">这是第一个内容</view>
<view v-if="!isActive">这是第二个内容</view>
<button @click="toggle()">点击切换内容</button>

In the above code, isActive is a Boolean type variable, and toggle() is a method used to change the state of isActive when the user clicks the button:

export default {
  data() {
    return {
      isActive: true
    }
  },
  methods: {
    toggle() {
      this.isActive = !this.isActive;
    }
  }
}

List Rendering

List rendering refers to rendering a set of data onto the page, specifically by displaying multiple identical elements or components, but the contents of these elements or components can be different. In uniapp, list rendering can be achieved through the v-for directive. The specific implementation method is that in the template, we can wrap the elements or components that need to be rendered in a list and loop through the v-for instruction to render. The code is as follows:

<view v-for="(item, index) in items" :key="index">
  <view>{{ item.title }}</view>
  <view>{{ item.content }}</view>
</view>

In the above code, items is an array type of data, in which each element contains two attributes: title and content. By wrapping the elements or components that need to be rendered in a list and using the v-for instruction to loop the rendering, we can achieve the effect of clicking to display different content.

Summary

Through the above three methods, we can achieve the effect of clicking to display different content. Among them, the v-show directive and v-if directive can be used to control the display or hiding of a single element or component, and list rendering can be used to display multiple elements or components. In actual application scenarios, we can choose appropriate methods according to different needs to achieve the effect of clicking to display different content. At the same time, it should be noted that during the development process, the components and instructions provided by uniapp should be reasonably utilized and unnecessary code should be avoided to improve development efficiency and user experience.

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