{"id":3025,"date":"2024-11-10T16:00:15","date_gmt":"2024-11-10T08:00:15","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3025\/"},"modified":"2024-11-10T16:00:15","modified_gmt":"2024-11-10T08:00:15","slug":"%e5%a6%82%e4%bd%95%e5%88%a4%e6%96%ad%e4%b8%a4%e4%b8%aa%e5%b9%b6%e5%88%97-dom-%e5%85%83%e7%b4%a0%e6%98%af%e5%90%a6%e5%8c%85%e5%90%ab%e5%9c%a8%e5%8f%a6%e4%b8%80%e4%b8%aa-dom-%e5%85%83%e7%b4%a0%e5%86%85","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3025\/","title":{"rendered":"\u5982\u4f55\u5224\u65ad\u4e24\u4e2a\u5e76\u5217 DOM \u5143\u7d20\u662f\u5426\u5305\u542b\u5728\u53e6\u4e00\u4e2a DOM \u5143\u7d20\u5185\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/173096892446911.jpg\" class=\"aligncenter\" title=\"\u5982\u4f55\u5224\u65ad\u4e24\u4e2a\u5e76\u5217 DOM \u5143\u7d20\u662f\u5426\u5305\u542b\u5728\u53e6\u4e00\u4e2a DOM \u5143\u7d20\u5185\uff1f\u63d2\u56fe\" alt=\"\u5982\u4f55\u5224\u65ad\u4e24\u4e2a\u5e76\u5217 DOM \u5143\u7d20\u662f\u5426\u5305\u542b\u5728\u53e6\u4e00\u4e2a DOM \u5143\u7d20\u5185\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5224\u65ad\u4e24\u4e2a\u5e76\u5217dom\u662f\u5426\u5305\u542b\u5728\u5185<\/strong><\/p>\n<p>\u5bf9\u4e8eDOM\u5143\u7d20\u662f\u5426\u5305\u542b\u5728\u5185\uff0c\u53ef\u4ee5\u6839\u636e\u4ee5\u4e0b\u89c4\u5219\u5224\u65ad\uff1a<\/p>\n<ol>\n<li>\u83b7\u53d6\u5bb9\u5668\u5143\u7d20\u548c\u8981\u5224\u65ad\u5143\u7d20\u7684\u8fb9\u754c\u6846\u3002<\/li>\n<li>\n<p>\u5224\u65ad\u662f\u5426\u6ee1\u8db3\u4ee5\u4e0b\u6761\u4ef6\uff1a<\/p>\n<ul>\n<li>\u8981\u5224\u65ad\u5143\u7d20\u7684\u9876\u90e8\u8fb9\u754c\u5927\u4e8e\u6216\u7b49\u4e8e\u5bb9\u5668\u5143\u7d20\u7684\u9876\u90e8\u8fb9\u754c\u3002<\/li>\n<li>\u8981\u5224\u65ad\u5143\u7d20\u7684\u5de6\u4fa7\u8fb9\u754c\u5927\u4e8e\u6216\u7b49\u4e8e\u5bb9\u5668\u5143\u7d20\u7684\u5de6\u4fa7\u8fb9\u754c\u3002<\/li>\n<li>\u8981\u5224\u65ad\u5143\u7d20\u7684\u5e95\u90e8\u8fb9\u754c\u5c0f\u4e8e\u6216\u7b49\u4e8e\u5bb9\u5668\u5143\u7d20\u7684\u5e95\u90e8\u8fb9\u754c\u3002<\/li>\n<li>\u8981\u5224\u65ad\u5143\u7d20\u7684\u53f3\u4fa7\u8fb9\u754c\u5c0f\u4e8e\u6216\u7b49\u4e8e\u5bb9\u5668\u5143\u7d20\u7684\u53f3\u4fa7\u8fb9\u754c\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>\u5982\u679c\u6ee1\u8db3\u4e0a\u8ff0\u6761\u4ef6\uff0c\u5219\u8868\u793a\u8981\u5224\u65ad\u5143\u7d20\u5305\u542b\u5728\u5bb9\u5668\u5143\u7d20\u5185\u3002<\/p>\n<p>\u5177\u4f53\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre>function isContained(element, container) {\n  const containerRect = container.getBoundingClientRect();\n  const elementRect = element.getBoundingClientRect();\n\n  return (\n    elementRect.top &gt;= containerRect.top &amp;&amp;\n    elementRect.left &gt;= containerRect.left &amp;&amp;\n    elementRect.bottom &lt;= containerRect.bottom &amp;&amp;\n    elementRect.right &lt;= containerRect.right\n  );\n}\n\nconst mark = document.querySelector(\".mark\");\nconst item1 = document.querySelector(\".item1\");\nconst item2 = document.querySelector(\".item2\");\nconst item3 = document.querySelector(\".item3\");\n\nconsole.log(\"Item 1 is contained:\", isContained(item1, mark));\nconsole.log(\"Item 2 is contained:\", isContained(item2, mark));\nconsole.log(\"Item 3 is contained:\", isContained(item3, mark));<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd0\u884c\u4ee5\u4e0a\u4ee3\u7801\uff0c\u4f1a\u5728\u63a7\u5236\u53f0\u4e2d\u8f93\u51fa\uff1a<\/p>\n<pre>Item 1 is contained: true\nItem 2 is contained: true\nItem 3 is contained: false<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u901a\u8fc7\u8c03\u7528 isContned \u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u5224\u65ad\u51fa item1 \u548c item2 \u90fd\u5305\u542b\u5728 mark \u5143\u7d20\u5185\uff0c\u800c item3 \u4e0d\u5305\u542b\u5728 mark \u5143\u7d20\u5185\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u5224\u65ad\u4e24\u4e2a\u5e76\u5217 DOM \u5143\u7d20\u662f\u5426\u5305\u542b\u5728\u53e6\u4e00\u4e2a DOM \u5143\u7d20\u5185\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5224\u65ad\u4e24\u4e2a\u5e76\u5217dom\u662f\u5426\u5305\u542b\u5728\u5185 \u5bf9\u4e8eDOM\u5143\u7d20\u662f\u5426\u5305\u542b\u5728\u5185\uff0c\u53ef\u4ee5\u6839\u636e\u4ee5\u4e0b\u89c4\u5219\u5224\u65ad\uff1a \u83b7\u53d6\u5bb9\u5668\u5143\u7d20\u548c\u8981\u5224\u65ad\u5143\u7d20\u7684\u8fb9\u754c\u6846\u3002 \u5224\u65ad\u662f\u5426\u6ee1\u8db3\u4ee5\u4e0b\u6761\u4ef6\uff1a \u8981\u5224\u65ad\u5143\u7d20\u7684\u9876\u90e8\u8fb9\u754c\u5927\u4e8e\u6216\u7b49\u4e8e\u5bb9\u5668\u5143\u7d20\u7684\u9876\u90e8\u8fb9\u754c\u3002 \u8981\u5224\u65ad\u5143\u7d20\u7684\u5de6\u4fa7\u8fb9\u754c\u5927\u4e8e\u6216\u7b49\u4e8e\u5bb9\u5668\u5143\u7d20\u7684\u5de6\u4fa7\u8fb9\u754c\u3002 \u8981\u5224\u65ad\u5143\u7d20\u7684\u5e95\u90e8\u8fb9\u754c\u5c0f\u4e8e\u6216\u7b49\u4e8e\u5bb9\u5668\u5143\u7d20\u7684\u5e95\u90e8\u8fb9\u754c\u3002 \u8981\u5224\u65ad\u5143\u7d20\u7684\u53f3\u4fa7\u8fb9\u754c\u5c0f\u4e8e\u6216\u7b49\u4e8e\u5bb9\u5668\u5143\u7d20\u7684\u53f3\u4fa7\u8fb9\u754c\u3002 \u5982\u679c\u6ee1\u8db3\u4e0a\u8ff0\u6761\u4ef6\uff0c\u5219\u8868\u793a\u8981\u5224\u65ad\u5143\u7d20\u5305\u542b\u5728\u5bb9\u5668\u5143\u7d20\u5185\u3002 \u5177\u4f53\u793a\u4f8b\u5982\u4e0b\uff1a function isContained(element, container) { const containerRect = container.getBoundingClientRect(); const elementRect = element.getBoundingClientRect(); return ( elementRect.top &gt;= containerRect.top &amp;&amp; elementRect.left &gt;= containerRect.left &amp;&amp; elementRect.bottom &lt;= containerRect.bottom &amp;&amp; elementRect.right &lt;= containerRect.right ); } const mark = document.querySelector(&#8220;.mark&#8221;); const item1 = document.querySelector(&#8220;.item1&#8221;); const item2 = document.querySelector(&#8220;.item2&#8221;); const item3 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