How to use vue to hide div by clicking on the blank space
This time I will show you how to use vue to hide divs by clicking on blank spaces, and how to use vue to hide divs by clicking on blank spaces. What are the precautions?The following is a practical case, let's take a look take a look.
How to implement it simply?
1. Definitely add a click event listener to the document
2. When a click event occurs, determine whether the current object is clicked
We will implement it by combining this idea and instructions.
A brief introduction to vue instructions
An instruction definition object can provide the following hook functions (all optional):
bind: Called only once, when the instruction is bound to an element for the first time. One-time initialization settings can be performed here.
inserted: Called when the bound element is inserted into the parent node (only the parent node is guaranteed to exist, but not necessarily inserted into the document).
update: Called when the VNode of the component is updated, but may occur before its child VNode is updated. The value of the directive may or may not have changed. But you can ignore unnecessary template updates by comparing the values before and after the update (detailed hookfunction parameterssee below).
componentUpdated: Called after the VNode of the component where the instruction is located and its sub-VNodes have all been updated.
unbind: Called only once, when the instruction is unbound from the element.
Next let’s take a look at the parameters of the hook function (i.e. el, binding, vnode and oldVnode).
Code implementation
Create the instruction object and put the analysis in the code
<template>
<p>
<p class="show" v-show="show" v-clickoutside="handleClose">
显示
</p>
</p>
</template>
<script>
const clickoutside = {
// 初始化指令
bind(el, binding, vnode) {
function documentHandler(e) {
// 这里判断点击的元素是否是本身，是本身，则返回
if (el.contains(e.target)) {
return false;
}
// 判断指令中是否绑定了函数
if (binding.expression) {
// 如果绑定了函数 则调用那个函数，此处binding.value就是handleClose方法
binding.value(e);
}
}
// 给当前元素绑定个私有变量，方便在unbind中可以解除事件监听
el.vueClickOutside = documentHandler;
document.addEventListener('click', documentHandler);
},
update() {},
unbind(el, binding) {
// 解除事件监听
document.removeEventListener('click', el.vueClickOutside);
delete el.vueClickOutside;
},
};
export default {
name: 'HelloWorld',
data() {
return {
show: true,
};
},
directives: {clickoutside},
methods: {
handleClose(e) {
this.show = false;
},
},
};
</script>
<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
.show {
width: 100px;
height: 100px;
background-color: red;
}
</style>I believe I read the case in this article You have mastered the method. For more exciting information, please pay attention to other related articles on the php Chinese website!
Recommended reading:
How to use Vue to implement a countdown button
How to use Vue to write a two-way data binding
The above is the detailed content of How to use vue to hide div by clicking on the blank space. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
How to implement dual WeChat login on Huawei mobile phones?
Mar 24, 2024 am 11:27 AM
How to implement dual WeChat login on Huawei mobile phones? With the rise of social media, WeChat has become one of the indispensable communication tools in people's daily lives. However, many people may encounter a problem: logging into multiple WeChat accounts at the same time on the same mobile phone. For Huawei mobile phone users, it is not difficult to achieve dual WeChat login. This article will introduce how to achieve dual WeChat login on Huawei mobile phones. First of all, the EMUI system that comes with Huawei mobile phones provides a very convenient function - dual application opening. Through the application dual opening function, users can simultaneously
Use Java to write code to implement love animation
Dec 23, 2023 pm 12:09 PM
Realizing love animation effects through Java code In the field of programming, animation effects are very common and popular. Various animation effects can be achieved through Java code, one of which is the heart animation effect. This article will introduce how to use Java code to achieve this effect and give specific code examples. The key to realizing the heart animation effect is to draw the heart-shaped pattern and achieve the animation effect by changing the position and color of the heart shape. Here is the code for a simple example: importjavax.swing.
PHP Programming Guide: Methods to Implement Fibonacci Sequence
Mar 20, 2024 pm 04:54 PM
The programming language PHP is a powerful tool for web development, capable of supporting a variety of different programming logics and algorithms. Among them, implementing the Fibonacci sequence is a common and classic programming problem. In this article, we will introduce how to use the PHP programming language to implement the Fibonacci sequence, and attach specific code examples. The Fibonacci sequence is a mathematical sequence defined as follows: the first and second elements of the sequence are 1, and starting from the third element, the value of each element is equal to the sum of the previous two elements. The first few elements of the sequence
How to implement the WeChat clone function on Huawei mobile phones
Mar 24, 2024 pm 06:03 PM
How to implement the WeChat clone function on Huawei mobile phones With the popularity of social software and people's increasing emphasis on privacy and security, the WeChat clone function has gradually become the focus of people's attention. The WeChat clone function can help users log in to multiple WeChat accounts on the same mobile phone at the same time, making it easier to manage and use. It is not difficult to implement the WeChat clone function on Huawei mobile phones. You only need to follow the following steps. Step 1: Make sure that the mobile phone system version and WeChat version meet the requirements. First, make sure that your Huawei mobile phone system version has been updated to the latest version, as well as the WeChat App.
Master how Golang enables game development possibilities
Mar 16, 2024 pm 12:57 PM
In today's software development field, Golang (Go language), as an efficient, concise and highly concurrency programming language, is increasingly favored by developers. Its rich standard library and efficient concurrency features make it a high-profile choice in the field of game development. This article will explore how to use Golang for game development and demonstrate its powerful possibilities through specific code examples. 1. Golang’s advantages in game development. As a statically typed language, Golang is used in building large-scale game systems.
How to implement exact division operation in Golang
Feb 20, 2024 pm 10:51 PM
Implementing exact division operations in Golang is a common need, especially in scenarios involving financial calculations or other scenarios that require high-precision calculations. Golang's built-in division operator "/" is calculated for floating point numbers, and sometimes there is a problem of precision loss. In order to solve this problem, we can use third-party libraries or custom functions to implement exact division operations. A common approach is to use the Rat type from the math/big package, which provides a representation of fractions and can be used to implement exact division operations.
PHP Game Requirements Implementation Guide
Mar 11, 2024 am 08:45 AM
PHP Game Requirements Implementation Guide With the popularity and development of the Internet, the web game market is becoming more and more popular. Many developers hope to use the PHP language to develop their own web games, and implementing game requirements is a key step. This article will introduce how to use PHP language to implement common game requirements and provide specific code examples. 1. Create game characters In web games, game characters are a very important element. We need to define the attributes of the game character, such as name, level, experience value, etc., and provide methods to operate these
How to implement operator overloading in Go language?
Dec 23, 2023 pm 01:55 PM
How to implement operator overloading in Go language? Go language is a modern programming language favored by developers for its concise syntax and efficient performance. However, the Go language does not provide operator overloading functionality like in languages such as C++ or Python. Operator overloading refers to the behavior of redefining or extending operators across different data types to make them applicable to specific objects or operations. Although there is no direct support for operator overloading in the Go language, we can achieve similar functionality in other ways. In Go language
