The command to hide elements in vue is "v-show". The v-show instruction determines whether an element is displayed or hidden based on the true or false value of the expression. The syntax is "v-show="expression"". The v-show instruction controls the display and hiding state of the element by changing the CSS display attribute of the element. The content of the expression following the instruction will eventually be parsed into a Boolean value. When the value is true (true), the element is displayed, and when the value is false (false) ) when the element is hidden.
The operating environment of this tutorial: windows7 system, vue3 version, DELL G3 computer.
Vue.js provides a v-show directive, which determines whether to display or hide an element based on the true or false value of the following expression.
The v-show command controls the display and hidden state of the element by changing the display attribute of the element's css.
v-show instruction introduction
The v-show instruction needs to be followed by a Boolean variable or Boolean expression. When the value is true Shows the element when the value is false and hides the element when the value is false.
<标签 v-show="true/false"></标签> <!--true:显示 false:隐藏-->
Example:
<div id="app">
<p v-show="flag == '显示'">Vue 课程</p>
</div><script>
var app = new Vue({
el: '#app',
data: {
flag: '隐藏'
}
});
</script>When the flag is set to 'hide', "Vue Course" will not be displayed; when the flag is set to 'show', "Vue Course" will be displayed Vue Courses".
In fact, when the flag is set to 'hidden', the css attribute display of the p element is set to none, so the element is hidden.
The rendered code is as follows:
<p style="display: none;">Vue 课程</p>
v-show code example
The following are html and js code examples
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<title>v-show指令</title>
</head>
<body>
<div id="app">
<input type="button" value="切换显示" @click="changeIsShow" />
<p v-show="isShow">不装了，我摊牌了，没错你要找的就是我</p>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
var app = new Vue({
el:"#app",
data:{
isShow:false
},
methods:{
changeIsShow(){
this.isShow = !this.isShow
}
}
})
</script>
</body>
</html>The code after rendering is as follows
<p style="display: none;">不装了，我摊牌了，没错你要找的就是我</p>
The running result of the code is as follows:
Summary
The function of the v-show command is to switch the display state of the element based on the true or false value
The principle is to modify the element CSS property (display) determines whether to display or hide
The content following the directive will eventually be parsed into a Boolean value
The value is true (true ) when the element is displayed, and when the value is false (false), the element is hidden
After the data changes, the display status of the corresponding element will also be updated synchronously
[Related recommendations: vuejs video tutorial, web front-end development]
The above is the detailed content of What is the instruction to hide elements in vue. For more information, please follow other related articles on the PHP Chinese website!
What are the limitations of React?May 02, 2025 am 12:26 AMReact'slimitationsinclude:1)asteeplearningcurveduetoitsvastecosystem,2)SEOchallengeswithclient-siderendering,3)potentialperformanceissuesinlargeapplications,4)complexstatemanagementasappsgrow,and5)theneedtokeepupwithitsrapidevolution.Thesefactorsshou
React's Learning Curve: Challenges for New DevelopersMay 02, 2025 am 12:24 AMReactischallengingforbeginnersduetoitssteeplearningcurveandparadigmshifttocomponent-basedarchitecture.1)Startwithofficialdocumentationforasolidfoundation.2)UnderstandJSXandhowtoembedJavaScriptwithinit.3)Learntousefunctionalcomponentswithhooksforstate
Generating Stable and Unique Keys for Dynamic Lists in ReactMay 02, 2025 am 12:22 AMThecorechallengeingeneratingstableanduniquekeysfordynamiclistsinReactisensuringconsistentidentifiersacrossre-rendersforefficientDOMupdates.1)Usenaturalkeyswhenpossible,astheyarereliableifuniqueandstable.2)Generatesynthetickeysbasedonmultipleattribute
JavaScript Fatigue: Staying Current with React and Its ToolsMay 02, 2025 am 12:19 AMJavaScriptfatigueinReactismanageablewithstrategieslikejust-in-timelearningandcuratedinformationsources.1)Learnwhatyouneedwhenyouneedit,focusingonprojectrelevance.2)FollowkeyblogsliketheofficialReactblogandengagewithcommunitieslikeReactifluxonDiscordt
Testing Components That Use the useState() HookMay 02, 2025 am 12:13 AMTotestReactcomponentsusingtheuseStatehook,useJestandReactTestingLibrarytosimulateinteractionsandverifystatechangesintheUI.1)Renderthecomponentandcheckinitialstate.2)Simulateuserinteractionslikeclicksorformsubmissions.3)Verifytheupdatedstatereflectsin
Keys in React: A Deep Dive into Performance Optimization TechniquesMay 01, 2025 am 12:25 AMKeysinReactarecrucialforoptimizingperformancebyaidinginefficientlistupdates.1)Usekeystoidentifyandtracklistelements.2)Avoidusingarrayindicesaskeystopreventperformanceissues.3)Choosestableidentifierslikeitem.idtomaintaincomponentstateandimproveperform
What are keys in React?May 01, 2025 am 12:25 AMReactkeysareuniqueidentifiersusedwhenrenderingliststoimprovereconciliationefficiency.1)TheyhelpReacttrackchangesinlistitems,2)usingstableanduniqueidentifierslikeitemIDsisrecommended,3)avoidusingarrayindicesaskeystopreventissueswithreordering,and4)ens
The Importance of Unique Keys in React: Avoiding Common PitfallsMay 01, 2025 am 12:19 AMUniquekeysarecrucialinReactforoptimizingrenderingandmaintainingcomponentstateintegrity.1)Useanaturaluniqueidentifierfromyourdataifavailable.2)Ifnonaturalidentifierexists,generateauniquekeyusingalibrarylikeuuid.3)Avoidusingarrayindicesaskeys,especiall
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
Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.
SublimeText3 Linux new version
SublimeText3 Linux latest version
DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
SublimeText3 English version
Recommended: Win version, supports code prompts!
Dreamweaver Mac version
Visual web development tools
