How to hide and show uniapp

UniApp is a cross-platform development framework based on the Vue.js framework, which can simultaneously develop applications for multiple platforms such as iOS, Android, and H5. In this framework, hiding and showing are one of the very important functions. In this article, we will elaborate on the hiding and showing functions in UniApp, so that you can better master UniApp development skills.

1. Hidden elements

In UniApp, the function used to hide elements is uni-hide, which can be used in the following ways:

<view uni-hide="{{isHidden}}">我是隐藏的元素</view>

Among them, isHidden is a Boolean type variable used to control the hiding and display of elements. When isHidden is true, the element will be hidden; when isHidden is false, the element will be displayed.

In actual development, we can directly operate the view layer, such as defining a v-bind directive in a button component <button>, Bind the visibility property of the component, and then switch in the component to display and hide the button.

2. Display elements

Compared with hiding elements, the function of displaying elements is relatively simple and can be implemented through the v-show command. When the Boolean value bound to the instruction is true, the element will be displayed; when the value is false, the element will be hidden.

The syntax for using the v-show command in UniApp is as follows:

<view v-show="isShow">我是可见的元素</view>

Among them, "isShow" is our custom Boolean type variable, which can be switched by controlling the value of this variable The shown and hidden states of the element.

3. In-depth application

Above we have learned about the hiding and display functions in UniApp, so in what scenarios can this function be used?

1. Data loading

When we load data, we usually need to process the loading data, such as displaying loading animations, prohibiting other user operations, etc. At this time we can control the state of related view components through hiding and showing functions.

<view v-show="showLoading">
      <image src="../static/loading.gif"></image>
</view>

2. Pop-up box control

During the application development process, pop-up boxes are a very common interaction mode. Usually we need to use control functions to show and hide the pop-up box. In this case, we can use the hide and show functions.

<view v-show="showPopup">我是弹框内容</view>

3. Pull down to refresh, pull up to load

In data list type applications, in order to obtain a better user experience, pull down to refresh and pull up to load are usually used Function. At this time we can control the status of related components through hiding and showing functions.

<view v-show="showTips">{{Tips}}</view>

In development, hiding and showing functions is one of the very important functions. Through an in-depth understanding and application of this function, we can better realize the functions of the application, thereby bringing a better experience to users. Hope this article is helpful to you.

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