uniapp input box cancels focus

UniApp is a cross-platform development tool based on the Vue.js framework, which can quickly compile Vue code into applications for multiple platforms. In UniApp development, basic operations include input, but sometimes we need to cancel the focus of the input box after input. This article will introduce how to cancel the focus of the input box in UniApp.

1. What is the focus of the input box

When we click on the input box, the input box has focus. At this time, the content we input will appear in the input box. At the same time , the appearance of the input box will also undergo some changes. On the mobile side, the keyboard of the input box will pop up so that we can enter content. If you do not cancel the focus of the input box, even if we click on other areas, the input box will still remain focused and the keyboard will not be automatically hidden.

2. Why should you cancel the focus of the input box?

On the mobile side, if you do not cancel the focus of the input box, the keyboard will not hide automatically. At this time, if the page needs to be scrolled, some problems will appear. question. For example, the input box is located at the bottom of the scroll view. When the input content exceeds the screen height, the keyboard will push the input box up, and a large amount of white space will appear at the top of the scroll view, and these white spaces cannot be filled by scrolling. This will As a result, the page display is not beautiful.

In addition, sometimes we also need to perform some processing on the data corresponding to the input box after input. If the input box keeps the focus, the code cannot be executed to the processing part.

3. How to cancel the focus of the input box

UniApp provides a blur event, which can be used to cancel the focus of the input box. This event is triggered when the input box loses focus.

The specific implementation method is as follows:

1. Add an input box in the template

<template>
  <view>
    <input 
      type="text"
      placeholder="请输入"
      v-model="inputValue" 
      @blur="onBlur"
    />
  </view>
</template>

2. Add an onBlur method in JS. This method It will be triggered when the input box loses focus. We can process the data corresponding to the input box in this method, and then use uni.hideKeyboard() to hide the keyboard.

<script>
  export default {
    data() {
      return {
        inputValue: ''
      }
    },
    methods: {
      onBlur() {
        // 对inputValue进行处理
        uni.hideKeyboard()
      }
    }
  }
</script>

4. Summary

Cancellation of input box focus is often used in UniApp development. During use, pay attention to prevent the keyboard from blocking the input box. At the right time, by calling JS Method to cancel the focus of the input box and process the data corresponding to the input box according to actual needs.

The above is the detailed content of uniapp input box cancels focus. For more information, please follow other related articles on the PHP Chinese website!