HTML DOM onmousedown 事件发生在元素上按下鼠标按钮时。左键单击的相关事件： 鼠标按下 上鼠标 点击 右键单击的相关事件： 鼠标按下 上鼠标 上下文菜单 支持的标签：它支持所有 HTML 元素，除了： <基地> <头> </strong></li> <li> <strong><元></strong></li> <li> <strong><参数></strong></li> <li> <strong><脚本></strong></li> <li> <strong><样式></strong></li> <li> <strong><标题></strong></li> </ul> <p><strong>句法：</strong></p> <ul> <li><strong>在 HTML 中：</strong></li> </ul> <div class="hcb_wrap"> <pre class="prism line-numbers lang-html" data-lang="HTML"><code class="replace"><element onmousedown="myScript"></code></pre> </div> <ul> <li><strong>在 JavaScript 中：</strong></li> </ul> <div class="hcb_wrap"> <pre class="prism line-numbers lang-html" data-lang="HTML"><code class="replace">object.onmousedown = function(){myScript};</code></pre> </div> <ul> <li><strong>在 JavaScript 中，使用 addEventListener() 方法：</strong></li> </ul> <div class="hcb_wrap"> <pre class="prism line-numbers lang-html" data-lang="HTML"><code class="replace">object.addEventListener("mousedown", myScript);</code></pre> </div> <p><strong>示例：</strong>使用 addEventListener() 方法</p> <p></p> <div class="_ap_apex_ad" id="d6f45c53-ff16-4cc5-8b91-eb6ee7037116" style="min-height:280px"></div> <p></p> <div> <h5 class="code">html</h5> <div class="hcb_wrap"> <pre class="prism line-numbers lang-html" data-lang="HTML"><code class="replace"><!DOCTYPE html> <html> <head> <title> HTML DOM onmousedown Event </title> </head> <body> <center> <h1 style="color:green"> GeeksforGeeks </h1> <h2 id="try"> HTML DOM onmousedown Event </h2> <script> document.getElementById( "try").addEventListener( "mousedown", btnpressed); function btnpressed() { document.getElementById( "try").innerHTML = "button pressed."; } </script> </center> </body> </html></code></pre> </div> <p></p> <hr/> </div> <p><strong>输出：</strong> </p> <p><img alt="" class="img-fluid" src="https://mangodoc.oss-cn-beijing.aliyuncs.com/geek8geeks/HTML_%7C_DOM_onmousedown_Event_0.jpg"/></p> <p><strong>支持的浏览器：</strong> <strong>HTML DOM onmousedown 事件</strong>支持的浏览器如下：</p> <ul> <li>谷歌浏览器</li> <li>IE浏览器</li> <li>火狐</li> <li>苹果Safari</li> <li>歌剧</li> </ul> <div class="_ap_apex_ad" id="82d2079a-8120-480f-9fc7-5cda825d56e7" style="min-height:280px"></div> <p></p></div> </article> </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>