{"id":166322,"date":"2024-05-08T15:34:25","date_gmt":"2024-05-08T07:34:25","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/166322.html"},"modified":"2024-05-08T15:34:32","modified_gmt":"2024-05-08T07:34:32","slug":"javascript%e6%80%8e%e4%b9%88%e5%ae%9e%e7%8e%b0%e8%bf%99%e7%a7%8d%e6%82%ac%e5%81%9c","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/166322.html","title":{"rendered":"JavaScript\u600e\u4e48\u5b9e\u73b0\u8fd9\u79cd\u60ac\u505c"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/26233416\/76af26bb-8277-4120-924d-4e2340213b45.webp\" alt=\"JavaScript\u600e\u4e48\u5b9e\u73b0\u8fd9\u79cd\u60ac\u505c\" \/><\/p>\n<p><p>\u5728JavaScript\u4e2d\u5b9e\u73b0\u60ac\u505c\uff08hover\uff09\u6548\u679c\uff0c\u53ef\u4ee5\u901a\u8fc7\u7ed1\u5b9a\u9f20\u6807\u4e8b\u4ef6\u3001\u4f7f\u7528CSS\u4f2a\u7c7b\u6216\u8005\u7ed3\u5408\u4e24\u8005<strong>\u8fdb\u884cDOM\u64cd\u4f5c\u3001\u6dfb\u52a0\u6216\u5220\u9664CSS\u7c7b\u3001\u4ee5\u53ca\u6539\u53d8\u6837\u5f0f\u5c5e\u6027<\/strong>\u7b49\u65b9\u6cd5\u3002\u4f8b\u5982\uff0c\u4f7f\u7528JavaScript\u7684<code>addEventListener<\/code>\u65b9\u6cd5\u76d1\u542c<code>mouseenter<\/code>\u548c<code>mouseleave<\/code>\u4e8b\u4ef6\uff0c\u6216\u8005\u5728CSS\u4e2d\u4f7f\u7528<code>:hover<\/code>\u9009\u62e9\u5668\u6765\u5b9e\u73b0\u60ac\u505c\u6837\u5f0f\u53d8\u5316\u3002<\/p>\n<\/p>\n<p><p>\u4e0b\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u600e\u6837\u4f7f\u7528JavaScript\u548cCSS\u6765\u5b9e\u73b0\u60ac\u505c\u6548\u679c\uff0c\u5e76\u63a2\u8ba8\u8fdb\u9636\u6280\u5de7\u4e0e\u6700\u4f73\u5b9e\u8df5\u3002<\/p>\n<\/p>\n<h2><strong><strong>\u4e00\u3001\u60ac\u505c\u6548\u679c\u7684\u57fa\u7840\u5b9e\u73b0<\/strong><\/strong><\/h2>\n<p><p>JavaScript \u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u6765\u5b9e\u73b0\u60ac\u505c\u6548\u679c\u3002\u57fa\u672c\u7684\u5b9e\u73b0\u53ef\u4ee5\u901a\u8fc7\u76d1\u542c DOM \u5143\u7d20\u7684\u9f20\u6807\u4e8b\u4ef6\u6765\u5b8c\u6210\u3002<\/p>\n<\/p>\n<p><h2><strong>\u9f20\u6807\u4e8b\u4ef6\u76d1\u542c<\/strong><\/h2>\n<\/p>\n<p><p>\u9996\u5148\uff0c\u53ef\u4ee5\u901a\u8fc7 <code>addEventListener<\/code> \u65b9\u6cd5\u4e3a\u76ee\u6807\u5143\u7d20\u6dfb\u52a0 &#039;mouseenter&#039; \u548c &#039;mouseleave&#039; \u4e8b\u4ef6\u76d1\u542c\u5668\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-javascript\">const element = document.getElementById(&#039;hover-target&#039;);<\/p>\n<p>element.addEventListener(&#039;mouseenter&#039;, function() {<\/p>\n<p>    this.style.backgroundColor = &#039;yellow&#039;; \/\/ \u60ac\u505c\u65f6\u6539\u53d8\u80cc\u666f\u989c\u8272<\/p>\n<p>});<\/p>\n<p>element.addEventListener(&#039;mouseleave&#039;, function() {<\/p>\n<p>    this.style.backgroundColor = &#039;&#039;; \/\/ \u9f20\u6807\u79bb\u5f00\u65f6\u6062\u590d\u80cc\u666f\u989c\u8272<\/p>\n<p>});<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u5b9e\u73b0\u65b9\u5f0f\u7684\u597d\u5904\u5728\u4e8e\uff0c\u4f60\u53ef\u4ee5\u6dfb\u52a0\u590d\u6742\u7684\u903b\u8f91\uff0c\u6bd4\u5982\u60ac\u505c\u65f6\u52a0\u8f7d\u6570\u636e\u6216\u6267\u884c\u52a8\u753b\u3002<\/p>\n<\/p>\n<p><h2><strong>CSS :hover \u4f2a\u7c7b<\/strong><\/h2>\n<\/p>\n<p><p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f60\u53ef\u80fd\u53ea\u662f\u60f3\u6539\u53d8\u5143\u7d20\u7684\u89c6\u89c9\u6837\u5f0f\uff0c\u800c\u65e0\u9700\u6267\u884c\u590d\u6742\u7684JavaScript\u3002\u5bf9\u4e8e\u8fd9\u79cd\u7b80\u5355\u7684\u89c6\u89c9\u6548\u679c\u53d8\u5316\uff0c\u63a8\u8350\u76f4\u63a5\u4f7f\u7528CSS\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-css\">#hover-target:hover {<\/p>\n<p>    background-color: yellow; \/* \u5f53\u9f20\u6807\u60ac\u505c\u5728\u5143\u7d20\u4e0a\u65b9\u65f6\uff0c\u6539\u53d8\u80cc\u666f\u8272 *\/<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u5728\u4e8e\u5b83\u7684\u6548\u679c\u66f4\u5e73\u6ed1\uff0c\u800c\u4e14\u4e0d\u4f1a\u5bf9\u9875\u9762\u7684\u6027\u80fd\u9020\u6210\u8d1f\u62c5\u3002<\/p>\n<\/p>\n<h2><strong><strong>\u4e8c\u3001\u9ad8\u7ea7\u60ac\u505c\u4ea4\u4e92<\/strong><\/strong><\/h2>\n<p><p>\u5bf9\u4e8e\u66f4\u52a0\u590d\u6742\u7684\u60ac\u505c\u6548\u679c\uff0c\u53ef\u80fd\u9700\u8981\u7ed3\u5408JavaScript\u548cCSS\u6765\u5b9e\u73b0\u3002<\/p>\n<\/p>\n<p><h2><strong>\u7c7b\u548c\u6837\u5f0f\u7684\u52a8\u6001\u64cd\u4f5c<\/strong><\/h2>\n<\/p>\n<p><p>\u501f\u52a9JavaScript\uff0c\u6211\u4eec\u80fd\u591f\u52a8\u6001\u5730\u6dfb\u52a0\u6216\u79fb\u9664\u7c7b\uff0c\u4ece\u800c\u5728CSS\u4e2d\u5b9a\u4e49\u66f4\u590d\u6742\u7684\u60ac\u505c\u72b6\u6001\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-javascript\">element.addEventListener(&#039;mouseenter&#039;, function() {<\/p>\n<p>    this.classList.add(&#039;hover-active&#039;); \/\/ \u6dfb\u52a0\u7c7b<\/p>\n<p>});<\/p>\n<p>element.addEventListener(&#039;mouseleave&#039;, function() {<\/p>\n<p>    this.classList.remove(&#039;hover-active&#039;); \/\/ \u79fb\u9664\u7c7b<\/p>\n<p>});<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728CSS\u6587\u4ef6\u4e2d\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-css\">.hover-active {<\/p>\n<p>    box-shadow: 0 5px 15px rgba(0,0,0,0.3); \/* \u6dfb\u52a0\u9634\u5f71\u6548\u679c *\/<\/p>\n<p>    transform: scale(1.05); \/* \u8f7b\u5fae\u653e\u5927\u5143\u7d20 *\/<\/p>\n<p>    transition: all .3s ease; \/* \u4f7f\u53d8\u5316\u66f4\u5e73\u6ed1 *\/<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2><strong>\u52a8\u753b\u548c\u8fc7\u6e21<\/strong><\/h2>\n<\/p>\n<p><p>\u6dfb\u52a0\u52a8\u753b\u548c\u8fc7\u6e21\u6548\u679c\u53ef\u4ee5\u589e\u5f3a\u60ac\u505c\u7684\u7528\u6237\u4f53\u9a8c\u3002\u8fd9\u901a\u5e38\u662f\u901a\u8fc7CSS\u4e2d\u7684<code>transition<\/code>\u5c5e\u6027\u6216<code>animation<\/code>\u5c5e\u6027\u4ee5\u53caJavaScript\u4e8b\u4ef6\u76d1\u542c\u5668\u6765\u5b9e\u73b0\u7684\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-css\">#hover-target {<\/p>\n<p>    transition: background-color .3s ease; \/* \u989c\u8272\u53d8\u5316\u8fc7\u6e21\u6548\u679c *\/<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u6837\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u7528\u6237\u5c06\u9f20\u6807\u60ac\u505c\u5728\u5143\u7d20\u4e0a\u65f6\u91c7\u7528\u5e73\u6ed1\u7684\u8fc7\u6e21\u6548\u679c\u6765\u6539\u53d8\u80cc\u666f\u8272\u3002<\/p>\n<\/p>\n<h2><strong><strong>\u4e09\u3001\u60ac\u505c\u6548\u679c\u7684\u6700\u4f73\u5b9e\u8df5<\/strong><\/strong><\/h2>\n<p><p>\u5728\u5b9e\u73b0\u60ac\u505c\u6548\u679c\u65f6\uff0c\u8003\u8651\u9875\u9762\u7684\u6027\u80fd\u548c\u7528\u6237\u4f53\u9a8c\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<\/p>\n<p><h2><strong>\u5173\u6ce8\u6027\u80fd<\/strong><\/h2>\n<\/p>\n<p><p>\u5f53\u5904\u7406\u60ac\u505c\u6548\u679c\u65f6\uff0c\u8981\u6ce8\u610f\u4e0d\u8981\u5f15\u8d77\u9875\u9762\u7684\u91cd\u7ed8\u6216\u91cd\u6392\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6027\u80fd\u95ee\u9898\u3002\u4e3a\u4e86\u907f\u514d\u8fd9\u4e9b\u95ee\u9898\uff0c\u53ef\u4ee5\u4f7f\u7528<code>translate<\/code>\u3001<code>opacity<\/code>\u8fd9\u7c7b\u4e0d\u4f1a\u89e6\u53d1\u91cd\u7ed8\u7684CSS\u5c5e\u6027\u3002<\/p>\n<\/p>\n<p><h2><strong>\u65e0\u969c\u788d\u548c\u79fb\u52a8\u8bbe\u5907<\/strong><\/h2>\n<\/p>\n<p><p>\u8003\u8651\u5230\u65e0\u969c\u788d\u6027\u548c\u79fb\u52a8\u8bbe\u5907\u4e0a\u7684\u7528\u6237\u4f53\u9a8c\uff0c\u6211\u4eec\u8981\u786e\u4fdd\u60ac\u505c\u6548\u679c\u4e0d\u4f1a\u5f71\u54cd\u5185\u5bb9\u7684\u53ef\u8bbf\u95ee\u6027\uff0c\u5e76\u63d0\u4f9b\u9002\u5f53\u7684\u53cd\u9988\u3002\u79fb\u52a8\u8bbe\u5907\u7684\u89e6\u6478\u5c4f\u6ca1\u6709\u60ac\u505c\u72b6\u6001\uff0c\u56e0\u6b64\u8981\u786e\u4fdd\u60ac\u505c\u6548\u679c\u4e0d\u662f\u529f\u80fd\u7684\u5fc5\u8981\u6761\u4ef6\u3002<\/p>\n<\/p>\n<h2><strong><strong>\u56db\u3001\u7efc\u5408\u5b9e\u4f8b\u53ca\u4ee3\u7801\u6f14\u793a<\/strong><\/strong><\/h2>\n<p><p>\u7ed3\u5408\u4ee5\u4e0a\u7684\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u51fa\u4e00\u4e2a\u5b8c\u6574\u7684\u60ac\u505c\u6548\u679c\u5b9e\u4f8b\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-javascript\">\/\/ JavaScript \u4ee3\u7801<\/p>\n<p>const card = document.querySelector(&#039;.card&#039;);<\/p>\n<p>card.addEventListener(&#039;mouseenter&#039;, () =&gt; {<\/p>\n<p>    card.classList.add(&#039;is-hovered&#039;);<\/p>\n<p>});<\/p>\n<p>card.addEventListener(&#039;mouseleave&#039;, () =&gt; {<\/p>\n<p>    card.classList.remove(&#039;is-hovered&#039;);<\/p>\n<p>});<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><pre><code class=\"language-css\">\/* CSS \u4ee3\u7801 *\/<\/p>\n<p>.card {<\/p>\n<p>    transition: transform .3s ease, box-shadow .3s ease;<\/p>\n<p>    will-change: transform, box-shadow; \/* \u6027\u80fd\u4f18\u5316 *\/<\/p>\n<p>}<\/p>\n<p>.card:hover, .card.is-hovered {<\/p>\n<p>    transform: translateY(-10px); \/* \u60ac\u505c\u65f6\u4e0a\u79fb *\/<\/p>\n<p>    box-shadow: 0 10px 30px rgba(0,0,0,.2); \/* \u589e\u52a0\u9634\u5f71 *\/<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u7efc\u5408\u4f7f\u7528JavaScript\u548cCSS\u7684\u7b56\u7565\uff0c\u6211\u4eec\u4e0d\u4ec5\u80fd\u591f\u5b9e\u73b0\u4e30\u5bcc\u7684\u4ea4\u4e92\u6548\u679c\uff0c\u8fd8\u80fd\u786e\u4fdd\u7f51\u7ad9\u6216\u5e94\u7528\u7684\u7528\u6237\u4f53\u9a8c\u548c\u6027\u80fd\u90fd\u4e0d\u4f1a\u6253\u6298\u3002<\/p>\n<\/p>\n<p><p><strong>\u60ac\u505c\u6548\u679c\u662f\u7528\u6237\u4ea4\u4e92\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206<\/strong>\uff0c\u5b83\u4eec\u4e0d\u4ec5\u80fd\u5438\u5f15\u7528\u6237\u7684\u6ce8\u610f\u529b\uff0c\u8fd8\u53ef\u4ee5\u63d0\u4f9b\u6709\u7528\u7684\u53cd\u9988\u548c\u6307\u5bfc\u3002\u901a\u8fc7\u7cbe\u5fc3\u8bbe\u8ba1\u7684\u60ac\u505c\u6548\u679c\uff0c\u6211\u4eec\u80fd\u591f\u63d0\u4f9b\u66f4\u76f4\u89c2\u3001\u66f4\u5f15\u4eba\u5165\u80dc\u7684\u7528\u6237\u4f53\u9a8c\u3002\u5728\u5b9e\u73b0\u60ac\u505c\u6548\u679c\u65f6\uff0c\u5e94\u8be5\u7efc\u5408\u8003\u8651\u4f7f\u7528\u7b80\u5355\u7684CSS\u65b9\u6cd5\u8fd8\u662fJavaScript\uff0c\u4ee5\u53ca\u5982\u4f55\u5e73\u8861\u89c6\u89c9\u5438\u5f15\u529b\u548c\u6027\u80fd\u9700\u6c42\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>\u5982\u4f55\u5728JavaScript\u4e2d\u5b9e\u73b0\u56fe\u50cf\u7684\u60ac\u505c\u6548\u679c\uff1f<\/strong><\/p>\n<p>\u60ac\u505c\u6548\u679c\u5728\u7f51\u9875\u8bbe\u8ba1\u4e2d\u5341\u5206\u5e38\u89c1\uff0c\u5b83\u4e3a\u56fe\u7247\u6216\u5176\u4ed6\u5143\u7d20\u6dfb\u52a0\u4e86\u4e00\u79cd\u4ea4\u4e92\u6027\u7684\u6548\u679c\u3002\u8981\u5728JavaScript\u4e2d\u5b9e\u73b0\u8fd9\u79cd\u60ac\u505c\u6548\u679c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n<ol>\n<li>\n<p>\u9009\u62e9\u8981\u6dfb\u52a0\u60ac\u505c\u6548\u679c\u7684\u5143\u7d20\u3002\u6bd4\u5982\uff0c\u53ef\u4ee5\u9009\u62e9\u56fe\u50cf\u7684CSS\u9009\u62e9\u5668\u6216dom\u5143\u7d20\u7684id\u6216\u7c7b\u540d\u3002<\/p>\n<\/li>\n<li>\n<p>\u4f7f\u7528JavaScript\u7684\u4e8b\u4ef6\u76d1\u542c\u5668\uff0c\u4f8b\u5982<code>addEventListener()<\/code>\u51fd\u6570\uff0c\u6765\u76d1\u542c\u9f20\u6807\u60ac\u505c\u4e8b\u4ef6\u3002\u53ef\u4ee5\u76d1\u542c<code>mouseover<\/code>\u6216<code>mouseenter<\/code>\u4e8b\u4ef6\u6765\u68c0\u6d4b\u9f20\u6807\u662f\u5426\u8fdb\u5165\u4e86\u5143\u7d20\u7684\u8303\u56f4\u3002<\/p>\n<\/li>\n<li>\n<p>\u5728\u4e8b\u4ef6\u76d1\u542c\u5668\u7684\u56de\u8c03\u51fd\u6570\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528<code>classList<\/code>\u5bf9\u8c61\u7684<code>add()<\/code>\u65b9\u6cd5\u6765\u6dfb\u52a0\u4e00\u4e2aCSS\u7c7b\uff0c\u6216\u8005\u4f7f\u7528<code>style<\/code>\u5c5e\u6027\u6765\u76f4\u63a5\u4fee\u6539\u5143\u7d20\u7684\u6837\u5f0f\u3002\u8fd9\u6837\u5c31\u53ef\u4ee5\u5c06\u60ac\u505c\u6548\u679c\u5e94\u7528\u5230\u5143\u7d20\u4e0a\u3002<\/p>\n<\/li>\n<li>\n<p>\u5982\u679c\u9700\u8981\u5728\u9f20\u6807\u79bb\u5f00\u5143\u7d20\u65f6\u53d6\u6d88\u60ac\u505c\u6548\u679c\uff0c\u53ef\u4ee5\u76d1\u542c<code>mouseout<\/code>\u6216<code>mouseleave<\/code>\u4e8b\u4ef6\uff0c\u5e76\u5728\u4e8b\u4ef6\u56de\u8c03\u51fd\u6570\u4e2d\u79fb\u9664\u6dfb\u52a0\u7684CSS\u7c7b\u6216\u8fd8\u539f\u6837\u5f0f\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u901a\u8fc7\u4ee5\u4e0a\u6b65\u9aa4\uff0c\u5c31\u53ef\u4ee5\u5b9e\u73b0\u5728JavaScript\u4e2d\u7ed9\u56fe\u7247\u6216\u5176\u4ed6\u5143\u7d20\u6dfb\u52a0\u60ac\u505c\u6548\u679c\u4e86\u3002<\/p>\n<p><strong>\u600e\u6837\u4f7f\u7528JavaScript\u521b\u5efa\u4e00\u4e2a\u9f20\u6807\u60ac\u505c\u7684\u6309\u94ae\uff1f<\/strong><\/p>\n<p>\u8981\u5728JavaScript\u4e2d\u521b\u5efa\u4e00\u4e2a\u9f20\u6807\u60ac\u505c\u7684\u6309\u94ae\uff0c\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u8fdb\u884c\uff1a<\/p>\n<ol>\n<li>\n<p>\u5728HTML\u4e2d\u521b\u5efa\u4e00\u4e2a\u6309\u94ae\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528<code>&lt;button&gt;<\/code>\u6807\u7b7e\u6216\u8005<code>&lt;input type=&quot;button&quot;&gt;<\/code>\u6807\u7b7e\u3002<\/p>\n<\/li>\n<li>\n<p>\u5728JavaScript\u4e2d\u9009\u62e9\u8981\u5e94\u7528\u60ac\u505c\u6548\u679c\u7684\u6309\u94ae\u5143\u7d20\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7CSS\u9009\u62e9\u5668\u3001dom\u5143\u7d20\u7684id\u6216\u7c7b\u540d\u6765\u9009\u62e9\u3002<\/p>\n<\/li>\n<li>\n<p>\u76d1\u542c\u6309\u94ae\u5143\u7d20\u7684\u9f20\u6807\u60ac\u505c\u4e8b\u4ef6\uff0c\u4f8b\u5982<code>mouseover<\/code>\u6216<code>mouseenter<\/code>\u4e8b\u4ef6\u3002<\/p>\n<\/li>\n<li>\n<p>\u5728\u9f20\u6807\u60ac\u505c\u4e8b\u4ef6\u7684\u56de\u8c03\u51fd\u6570\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4fee\u6539\u6309\u94ae\u7684\u6837\u5f0f\uff0c\u4ee5\u6539\u53d8\u5176\u5916\u89c2\u3002\u53ef\u4ee5\u4f7f\u7528<code>style<\/code>\u5c5e\u6027\u4fee\u6539\u6309\u94ae\u7684\u80cc\u666f\u989c\u8272\u3001\u5b57\u4f53\u989c\u8272\u7b49\u3002<\/p>\n<\/li>\n<li>\n<p>\u5982\u679c\u9700\u8981\u5728\u9f20\u6807\u79bb\u5f00\u6309\u94ae\u65f6\u6062\u590d\u6309\u94ae\u7684\u9ed8\u8ba4\u6837\u5f0f\uff0c\u53ef\u4ee5\u76d1\u542c<code>mouseout<\/code>\u6216<code>mouseleave<\/code>\u4e8b\u4ef6\uff0c\u5e76\u5728\u4e8b\u4ef6\u56de\u8c03\u51fd\u6570\u4e2d\u8fd8\u539f\u6309\u94ae\u7684\u6837\u5f0f\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u901a\u8fc7\u4ee5\u4e0a\u6b65\u9aa4\uff0c\u60a8\u5c31\u53ef\u4ee5\u4f7f\u7528JavaScript\u521b\u5efa\u4e00\u4e2a\u5177\u6709\u9f20\u6807\u60ac\u505c\u6548\u679c\u7684\u6309\u94ae\u4e86\u3002<\/p>\n<p><strong>\u5982\u4f55\u901a\u8fc7JavaScript\u5b9e\u73b0\u6587\u5b57\u7684\u60ac\u505c\u6548\u679c\uff1f<\/strong><\/p>\n<p>\u5982\u679c\u60a8\u5e0c\u671b\u901a\u8fc7JavaScript\u5b9e\u73b0\u6587\u5b57\u7684\u60ac\u505c\u6548\u679c\uff0c\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u8fdb\u884c\uff1a<\/p>\n<ol>\n<li>\n<p>\u5728HTML\u4e2d\u521b\u5efa\u5305\u542b\u6587\u5b57\u7684\u5143\u7d20\uff0c\u4f8b\u5982<code>&lt;p&gt;<\/code>\u6807\u7b7e\u6216<code>&lt;span&gt;<\/code>\u6807\u7b7e\u3002<\/p>\n<\/li>\n<li>\n<p>\u4f7f\u7528JavaScript\u9009\u62e9\u8981\u5e94\u7528\u60ac\u505c\u6548\u679c\u7684\u6587\u5b57\u5143\u7d20\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7CSS\u9009\u62e9\u5668\u3001dom\u5143\u7d20\u7684id\u6216\u7c7b\u540d\u6765\u9009\u62e9\u3002<\/p>\n<\/li>\n<li>\n<p>\u76d1\u542c\u6587\u5b57\u5143\u7d20\u7684\u9f20\u6807\u60ac\u505c\u4e8b\u4ef6\uff0c\u4f8b\u5982<code>mouseover<\/code>\u6216<code>mouseenter<\/code>\u4e8b\u4ef6\u3002<\/p>\n<\/li>\n<li>\n<p>\u5728\u9f20\u6807\u60ac\u505c\u4e8b\u4ef6\u7684\u56de\u8c03\u51fd\u6570\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528<code>classList<\/code>\u5bf9\u8c61\u7684<code>add()<\/code>\u65b9\u6cd5\u6765\u6dfb\u52a0\u4e00\u4e2aCSS\u7c7b\uff0c\u6216\u8005\u4f7f\u7528<code>style<\/code>\u5c5e\u6027\u6765\u76f4\u63a5\u4fee\u6539\u6587\u5b57\u7684\u6837\u5f0f\u3002\u53ef\u4ee5\u6539\u53d8\u6587\u5b57\u7684\u989c\u8272\u3001\u80cc\u666f\u8272\u3001\u5b57\u4f53\u5927\u5c0f\u7b49\u3002<\/p>\n<\/li>\n<li>\n<p>\u5982\u679c\u9700\u8981\u5728\u9f20\u6807\u79bb\u5f00\u6587\u5b57\u65f6\u53d6\u6d88\u60ac\u505c\u6548\u679c\uff0c\u53ef\u4ee5\u76d1\u542c<code>mouseout<\/code>\u6216<code>mouseleave<\/code>\u4e8b\u4ef6\uff0c\u5e76\u5728\u4e8b\u4ef6\u56de\u8c03\u51fd\u6570\u4e2d\u79fb\u9664\u6dfb\u52a0\u7684CSS\u7c7b\u6216\u8fd8\u539f\u6837\u5f0f\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u901a\u8fc7\u4ee5\u4e0a\u6b65\u9aa4\uff0c\u60a8\u5c31\u53ef\u4ee5\u5728JavaScript\u4e2d\u5b9e\u73b0\u6587\u5b57\u7684\u60ac\u505c\u6548\u679c\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728JavaScript\u4e2d\u5b9e\u73b0\u60ac\u505c\uff08hover\uff09\u6548\u679c\uff0c\u53ef\u4ee5\u901a\u8fc7\u7ed1\u5b9a\u9f20\u6807\u4e8b\u4ef6\u3001\u4f7f\u7528CSS\u4f2a\u7c7b\u6216\u8005\u7ed3\u5408\u4e24\u8005\u8fdb\u884cDOM 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