How to use the v-model directive in vue.js to implement two-way data binding-JS Tutorial-php.cn

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How to use the v-model directive in vue.js to implement two-way data binding

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May 28, 2018 pm 01:48 PM

javascript v-model vue.js

This time I will show you how to use the v-model directive in vue.js to achieve two-way data binding, and how to use the v-model directive in vue.js to achieve two-way data binding. What are the precautions , the following is a practical case, let’s take a look.

One of the major functions of vue.js is to realize two-way binding of data. This article will introduce the use of v-model instructions to realize two-way binding during form processing:

v-model this Instructions can only be used on form elements such as , . The so-called two-way binding refers to the data in the vue instance in js and the content on the rendered dom element. To remain consistent, no matter which one of the two is changed, the other will be updated to the same data accordingly. This is accomplished by setting the <a href="http://www.php.cn/wiki/169.html" target="_blank">property</a> accessor. For example: </p> <p style="text-align: left;">app.html</p> <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false"><!doctype html> <html lang="zh-CN"> <head> <meta charset="UTF-8"> <title> vuejs v-model 数据双向绑定 </title> <style type="text/css"> [v-cloak] { display: none } </style> </head> <body> <p id="app"> <form> 姓名： <input type="text" v-model="data.name" placeholder="姓名"/> <br /> 性别： <input type="radio" id="one" value="One" v-model="data.sex"/> <label for="man">男</label> <input type="radio" id="two" value="Two" v-model="data.sex"/> <label for="male">女</label> <br /> <input type="checkbox" id="jack" value="book" v-model="data.interest"/> <label for="jack">阅读</label> <input type="checkbox" id="john" value="swim" v-model="data.interest"/> <label for="john">游泳</label> <input type="checkbox" id="move" value="game" v-model="data.interest"/> <label for="move">游戏</label> <input type="checkbox" id="mike" value="song" v-model="data.interest"/> <label for="mike">唱歌</label> <br /> 身份： <select v-model="data.identity"> <option value="teacher" selected>教师</option> <option value="doctor">医生</option> <option value="lawyer">律师</option> </select> </form> <p><pre class="brush:php;toolbar:false">data: {{$data | json 2}}</pre></p> </p> </body> <script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js" charset="utf-8"></script> <script src="https://cdn.bootcss.com/vue/2.3.0/vue.min.js" charset="utf-8"></script> <script type="text/javascript"> $(function() { new Vue({ el: '#app', data: { data:{ name:'', sex:'', interest:[], identity:'' } } }) }) </script> </html></pre><div class="contentsignin">Copy after login</div></div> <p> I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website! </p> <p>Recommended reading: </p> <p><a href="http://www.php.cn/js-tutorial-398739.html" target="_blank">How to implement fuzzy query of vue input input box</a><br></p> <p><a href="http://www.php.cn/js-tutorial-398730.html" target="_blank">How to use nodejs express to configure a self-signed https server </a><br></p><p>The above is the detailed content of How to use the v-model directive in vue.js to implement two-way data binding. For more information, please follow other related articles on the PHP Chinese website!</p> </div> </div> <div class="wzconShengming_sp"> <div class="bzsmdiv_sp">Statement of this Website</div> <div>The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. 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In the real-time online ordering system, when the user selects dishes and places an order</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/faq/633311.html" title="How to implement an online reservation system using WebSocket and JavaScript" class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/000/887/227/170277714783917.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="How to implement an online reservation system using WebSocket and JavaScript" /> </a> <a href="https://www.php.cn/faq/633311.html" title="How to implement an online reservation system using WebSocket and JavaScript" class="phphistorical_Version2_mids_title">How to implement an online reservation system using WebSocket and JavaScript</a> <span class="Articlelist_txts_time">Dec 17, 2023 am 09:39 AM</span> <p class="Articlelist_txts_p">How to use WebSocket and JavaScript to implement an online reservation system. In today's digital era, more and more businesses and services need to provide online reservation functions. It is crucial to implement an efficient and real-time online reservation system. This article will introduce how to use WebSocket and JavaScript to implement an online reservation system, and provide specific code examples. 1. What is WebSocket? WebSocket is a full-duplex method on a single TCP connection.</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/faq/633476.html" title="JavaScript and WebSocket: Building an efficient real-time weather forecasting system" class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/000/465/014/170280442251580.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="JavaScript and WebSocket: Building an efficient real-time weather forecasting system" /> </a> <a href="https://www.php.cn/faq/633476.html" title="JavaScript and WebSocket: Building an efficient real-time weather forecasting system" class="phphistorical_Version2_mids_title">JavaScript and WebSocket: Building an efficient real-time weather forecasting system</a> <span class="Articlelist_txts_time">Dec 17, 2023 pm 05:13 PM</span> <p class="Articlelist_txts_p">JavaScript and WebSocket: Building an efficient real-time weather forecast system Introduction: Today, the accuracy of weather forecasts is of great significance to daily life and decision-making. As technology develops, we can provide more accurate and reliable weather forecasts by obtaining weather data in real time. In this article, we will learn how to use JavaScript and WebSocket technology to build an efficient real-time weather forecast system. This article will demonstrate the implementation process through specific code examples. We</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/faq/642543.html" title="Simple JavaScript Tutorial: How to Get HTTP Status Code" class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/000/887/227/170444932683164.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="Simple JavaScript Tutorial: How to Get HTTP Status Code" /> </a> <a href="https://www.php.cn/faq/642543.html" title="Simple JavaScript Tutorial: How to Get HTTP Status Code" class="phphistorical_Version2_mids_title">Simple JavaScript Tutorial: How to Get HTTP Status Code</a> <span class="Articlelist_txts_time">Jan 05, 2024 pm 06:08 PM</span> <p class="Articlelist_txts_p">JavaScript tutorial: How to get HTTP status code, specific code examples are required. Preface: In web development, data interaction with the server is often involved. When communicating with the server, we often need to obtain the returned HTTP status code to determine whether the operation is successful, and perform corresponding processing based on different status codes. This article will teach you how to use JavaScript to obtain HTTP status codes and provide some practical code examples. Using XMLHttpRequest</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/faq/630681.html" title="How to use insertBefore in javascript" class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="?x-oss-process=image/resize,m_fill,h_207,w_330" alt="How to use insertBefore in javascript" /> </a> <a href="https://www.php.cn/faq/630681.html" title="How to use insertBefore in javascript" class="phphistorical_Version2_mids_title">How to use insertBefore in javascript</a> <span class="Articlelist_txts_time">Nov 24, 2023 am 11:56 AM</span> <p class="Articlelist_txts_p">Usage: In JavaScript, the insertBefore() method is used to insert a new node in the DOM tree. This method requires two parameters: the new node to be inserted and the reference node (that is, the node where the new node will be inserted).</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/faq/633281.html" title="JavaScript and WebSocket: Building an efficient real-time image processing system" class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/000/887/227/170277372169688.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="JavaScript and WebSocket: Building an efficient real-time image processing system" /> </a> <a href="https://www.php.cn/faq/633281.html" title="JavaScript and WebSocket: Building an efficient real-time image processing system" class="phphistorical_Version2_mids_title">JavaScript and WebSocket: Building an efficient real-time image processing system</a> <span class="Articlelist_txts_time">Dec 17, 2023 am 08:41 AM</span> <p class="Articlelist_txts_p">JavaScript is a programming language widely used in web development, while WebSocket is a network protocol used for real-time communication. Combining the powerful functions of the two, we can create an efficient real-time image processing system. This article will introduce how to implement this system using JavaScript and WebSocket, and provide specific code examples. First, we need to clarify the requirements and goals of the real-time image processing system. Suppose we have a camera device that can collect real-time image data</p> </div> </div> <a href="https://www.php.cn/web-designer.html" class="phpgenera_Details_mainL4_botton"> <span>See all articles</span> <img src="/static/imghw/down_right.png" alt="" /> </a> </div> </div> </div> </main> <footer> <div class="footer"> <div class="footertop"> <img src="/static/imghw/logo.png" alt=""> <p>Public welfare online PHP training，Help PHP learners grow quickly！</p> </div> <div class="footermid"> <a href="https://www.php.cn/about/us.html">About us</a> <a href="https://www.php.cn/about/disclaimer.html">Disclaimer</a> <a href="https://www.php.cn/update/article_0_1.html">Sitemap</a> </div> <div class="footerbottom"> <p> © php.cn All rights reserved </p> </div> </div> </footer> <input type="hidden" id="verifycode" value="/captcha.html"> <script>layui.use(['element', 'carousel'], function () {var element = layui.element;$ = layui.jquery;var carousel = layui.carousel;carousel.render({elem: '#test1', width: '100%', height: '330px', arrow: 'always'});$.getScript('/static/js/jquery.lazyload.min.js', function () {$("img").lazyload({placeholder: "/static/images/load.jpg", effect: "fadeIn", threshold: 200, skip_invisible: false});});});</script> <script src="/static/js/common_new.js"></script> <script type="text/javascript" src="/static/js/jquery.cookie.js?1745599178"></script> <script src="https://vdse.bdstatic.com//search-video.v1.min.js"></script> <link rel='stylesheet' id='_main-css' href='/static/css/viewer.min.css?2' type='text/css' media='all' /> <script type='text/javascript' src='/static/js/viewer.min.js?1'></script> <script type='text/javascript' src='/static/js/jquery-viewer.min.js'></script> <script type="text/javascript" src="/static/js/global.min.js?5.5.53"></script> <script> var _paq = window._paq = window._paq || []; /* tracker methods like "setCustomDimension" should be called before "trackPageView" */ _paq.push(['trackPageView']); _paq.push(['enableLinkTracking']); (function () { var u = "https://tongji.php.cn/"; _paq.push(['setTrackerUrl', u + 'matomo.php']); _paq.push(['setSiteId', '9']); var d = document, g = d.createElement('script'), s = d.getElementsByTagName('script')[0]; g.async = true; g.src = u + 'matomo.js'; s.parentNode.insertBefore(g, s); })(); </script> <script> // top layui.use(function () { var util = layui.util; util.fixbar({ on: { mouseenter: function (type) { layer.tips(type, this, { tips: 4, fixed: true, }); }, mouseleave: function (type) { layer.closeAll("tips"); }, }, }); }); document.addEventListener("DOMContentLoaded", (event) => { // 定义一个函数来处理滚动链接的点击事件 function setupScrollLink(scrollLinkId, targetElementId) { const scrollLink = document.getElementById(scrollLinkId); const targetElement = document.getElementById(targetElementId); if (scrollLink && targetElement) { scrollLink.addEventListener("click", (e) => { e.preventDefault(); // 阻止默认链接行为 targetElement.scrollIntoView({ behavior: "smooth" }); // 平滑滚动到目标元素 }); } else { console.warn( `Either scroll link with ID '${scrollLinkId}' or target element with ID '${targetElementId}' not found.` ); } } // 使用该函数设置多个滚动链接 setupScrollLink("Article_Details_main1L2s_1", "article_main_title1"); setupScrollLink("Article_Details_main1L2s_2", "article_main_title2"); setupScrollLink("Article_Details_main1L2s_3", "article_main_title3"); setupScrollLink("Article_Details_main1L2s_4", "article_main_title4"); setupScrollLink("Article_Details_main1L2s_5", "article_main_title5"); setupScrollLink("Article_Details_main1L2s_6", "article_main_title6"); // 可以继续添加更多的滚动链接设置 }); window.addEventListener("scroll", function () { var fixedElement = document.getElementById("Article_Details_main1Lmain"); var scrollTop = window.scrollY || document.documentElement.scrollTop; // 兼容不同浏览器 var clientHeight = window.innerHeight || document.documentElement.clientHeight; // 视口高度 var scrollHeight = document.documentElement.scrollHeight; // 页面总高度 // 计算距离底部的距离 var distanceToBottom = scrollHeight - scrollTop - clientHeight; // 当距离底部小于或等于300px时，取消固定定位 if (distanceToBottom <= 980) { fixedElement.classList.remove("Article_Details_main1Lmain"); fixedElement.classList.add("Article_Details_main1Lmain_relative"); } else { // 否则，保持固定定位 fixedElement.classList.remove("Article_Details_main1Lmain_relative"); fixedElement.classList.add("Article_Details_main1Lmain"); } }); </script> <script> document.addEventListener('DOMContentLoaded', function() { const mainNav = document.querySelector('.Article_Details_main1Lmain'); const header = document.querySelector('header'); if (mainNav) { window.addEventListener('scroll', function() { const scrollPosition = window.scrollY; if (scrollPosition > 84) { mainNav.classList.add('fixed'); } else { mainNav.classList.remove('fixed'); } }); } }); </script> </body> </html>