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📅 最后修改于: 2021-05-13 20:24:09 🧑 作者: Mango
AngluarJS中的ng-keyup指令用于对keyup事件应用自定义行为。它由，和元素支持。</p> <p><strong>句法：</strong> </p> <div class="hcb_wrap"> <pre class="prism line-numbers lang-html" data-lang="HTML"><code class="replace"><element ng-keyup="expression"> Contents... </element></code></pre> </div> <p><strong>示例：</strong>此示例使用ng-keyup指令在按下按钮的同时更改背景颜色。 </p> <div class="hcb_wrap"> <pre class="prism line-numbers lang-html" data-lang="HTML"><code class="replace"><!DOCTYPE html> <html> <head> <title>ng-keyup Directive</title> <script src= "https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"> </script> <style type="text/css"> .keyDown { background-color: yellow; color: black; } .keyUp { background-color: green; color:white; } </style> </head> <body ng-app style="text-align:center"> <h1 style="color:green"> GeeksforGeeks </h1> <h2>ng-keyup Directive</h2> <div> <b>Enter Name: </b><input type="text" ng-model="searchValue" ng-keydown="keyDown=true" ng-keyup="keyDown=false" ng-class= "{true:'keyDown', false:'keyUp'}[keyDown]"/> <br> </div> </body> </html> </code></pre> </div> <p><strong>输出：</strong><br/><strong>按下键时：</strong> <br/><img alt="ngkeyup" class="img-fluid" src="https://mangdo-1254073825.cos.ap-chengdu.myqcloud.com//front_eng_imgs/geeksforgeeks2021/AngularJS%20%7C%20ng-keyup%20Directive_0.jpg"/><br/><strong>按下键时：</strong> <br/><img alt="ngkeyup" class="img-fluid" src="https://mangdo-1254073825.cos.ap-chengdu.myqcloud.com//front_eng_imgs/geeksforgeeks2021/AngularJS%20%7C%20ng-keyup%20Directive_1.jpg"/></p> <div class="_ap_apex_ad" id="82d2079a-8120-480f-9fc7-5cda825d56e7"></div> <p></p></div> </div> </div> </div> </div> </div> <footer> <div class="bg-white text-center pb-1"> <p class="text-body-tertiary pt-3 lh-lg text-opacity-50" id="footer-text">Copyright © 2020 - 2024 版权所有 <br> <a href="https://beian.miit.gov.cn/" target="_blank" class="text-opacity-50 text-body-tertiary mt-1 mb-1">蜀ICP备20006366号-1</a> <br> Made with ❤️ in Chengdu </p> </div> </footer> <!-- 引入Bootstrap JavaScript库 --> <script src="https://unpkg.com/bootstrap@5.3.0-alpha1/dist/js/bootstrap.bundle.min.js" crossorigin="anonymous"></script> <!-- 引入Meilisearch搜索相关的JavaScript库 --> <script src="https://cdn.jsdelivr.net/npm/@meilisearch/instant-meilisearch/dist/instant-meilisearch.umd.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/instantsearch.js@4"></script> <script src="https://imangodoc.com/static/javascript/meili_custom.js"></script> <!-- 引入prismjs代码高亮相关的JavaScript库 --> <script src="https://cdn.jsdelivr.net/npm/prismjs@1.29.0/components/prism-core.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/prismjs@1.29.0/plugins/toolbar/prism-toolbar.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/prismjs@1.29.0/plugins/autoloader/prism-autoloader.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/prismjs@1.29.0/plugins/copy-to-clipboard/prism-copy-to-clipboard.min.js"></script> </body> </html>