{"id":53115,"date":"2024-12-03T13:56:24","date_gmt":"2024-12-03T05:56:24","guid":{"rendered":"https:\/\/fwq.ai\/blog\/53115\/"},"modified":"2024-12-03T13:56:24","modified_gmt":"2024-12-03T05:56:24","slug":"react%e8%87%aa%e5%8a%a8%e4%bc%b8%e7%bc%a9%e6%96%87%e6%9c%ac%e7%bb%84%e4%bb%b6%e5%8a%a8%e7%94%bb%e9%97%aa%e7%83%81%ef%bc%9a%e5%a6%82%e4%bd%95%e9%81%bf%e5%85%8d%e6%b8%b2%e6%9f%93%e9%97%aa%e7%83%81","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/53115\/","title":{"rendered":"React\u81ea\u52a8\u4f38\u7f29\u6587\u672c\u7ec4\u4ef6\u52a8\u753b\u95ea\u70c1\uff1a\u5982\u4f55\u907f\u514d\u6e32\u67d3\u95ea\u70c1\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>React\u81ea\u52a8\u4f38\u7f29\u6587\u672c\u7ec4\u4ef6\u52a8\u753b\u95ea\u70c1\uff1a\u5982\u4f55\u907f\u514d\u6e32\u67d3\u95ea\u70c1\uff1f<\/h1>\n<p><span style=\"font-size: 15px\">\u5b66\u4e60\u77e5\u8bc6\u8981\u5584\u4e8e\u601d\u8003\uff0c\u601d\u8003\uff0c\u518d\u601d\u8003\uff01\u4eca\u5929\u7c73\u4e91\u5c0f\u7f16\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aReact\u81ea\u52a8\u4f38\u7f29\u6587\u672c\u7ec4\u4ef6\u52a8\u753b\u95ea\u70c1\uff1a\u5982\u4f55\u907f\u514d\u6e32\u67d3\u95ea\u70c1\uff1f\u300b<\/span>\uff0c\u4ee5\u4e0b\u5185\u5bb9\u4e3b\u8981\u5305\u542b<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u6216\u51c6\u5907\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\uff0c\u5c31\u90fd\u4e0d\u8981\u9519\u8fc7\u672c\u6587\u5566~\u8ba9\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff0c\u80fd\u5e2e\u52a9\u5230\u4f60\u5c31\u66f4\u597d\u4e86\uff01<\/span><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241126\/17326296356745d4833a404.jpg\" class=\"aligncenter\" title=\"React\u81ea\u52a8\u4f38\u7f29\u6587\u672c\u7ec4\u4ef6\u52a8\u753b\u95ea\u70c1\uff1a\u5982\u4f55\u907f\u514d\u6e32\u67d3\u95ea\u70c1\uff1f\u63d2\u56fe\" alt=\"React\u81ea\u52a8\u4f38\u7f29\u6587\u672c\u7ec4\u4ef6\u52a8\u753b\u95ea\u70c1\uff1a\u5982\u4f55\u907f\u514d\u6e32\u67d3\u95ea\u70c1\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>react \u4e2d\u81ea\u52a8\u4f38\u7f29\u6587\u672c\u7ec4\u4ef6\u7684\u52a8\u753b\u95ea\u70c1\u95ee\u9898<\/strong><\/p>\n<p>\u5728 react \u4e2d\u521b\u5efa\u4e86\u4e00\u4e2a\u81ea\u52a8\u6839\u636e\u6587\u672c\u957f\u5ea6\u7f29\u653e\u7684\u7ec4\u4ef6\uff0c\u4f46\u662f\u5728\u6587\u672c\u53d8\u5316\u65f6\uff0c\u7ec4\u4ef6\u5728\u7f29\u653e\u52a8\u753b\u4e2d\u4f1a\u4ea7\u751f\u95ea\u70c1\u95ee\u9898\u3002\u5982\u4f55\u89e3\u51b3\u8fd9\u79cd\u60c5\u51b5\uff1f<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848<\/strong><\/p>\n<p>\u901a\u8fc7\u4f7f\u7528 uselayouteffect \u4ee3\u66ff useeffect \u53ef\u4ee5\u51cf\u5c11\u52a8\u753b\u95ea\u70c1\u3002uselayouteffect \u4f1a\u5728\u7ec4\u4ef6\u6e32\u67d3\u524d\u8ba1\u7b97\uff0c\u800c useeffect \u5219\u662f\u5728\u6e32\u67d3\u540e\u8ba1\u7b97\u3002<\/p>\n<p>\u5c06 useeffect \u4fee\u6539\u4e3a\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre>useLayoutEffect(() =&gt; {\n  const node = nodeRef.current;\n  if (!node) return;\n\n  \/\/ \u6bcf\u6b21text\u53d8\u5316\u65f6\uff0c\u6839\u636e\u6587\u672c\u957f\u5ea6\u8bbe\u5b9ascale \u8303\u56f4\n  const availableWidth = parentNodeOffsetWidth.current - 32;\n  const actualWidth = node.offsetWidth;\n  const actualScale = availableWidth \/ actualWidth;\n  if (scale !== actualScale) {\n    if (actualScale &lt; 1) {\n      setScale(actualScale);\n    } else if (scale &lt; 1) {\n      setScale(1);\n    }\n  }\n}, [text]);<\/pre>\n<p>\u8fd9\u6837\uff0c\u6587\u672c\u53d8\u5316\u5bfc\u81f4\u7684\u7f29\u653e\u8ba1\u7b97\u5c06\u5728\u6e32\u67d3\u524d\u5b8c\u6210\uff0c\u51cf\u5c11\u4e86\u52a8\u753b\u95ea\u70c1\u7684\u95ee\u9898\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\u7c73\u4e91\uff01\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\u3002<\/p>\n<dl>\n<dt><\/dt>\n<dd>\n   \u89e3\u51b3\u7535\u8111\u5361\u987f\u7684\u65b9\u6cd5\uff0c\u8ba9\u4f60\u7684\u7535\u8111\u8fd0\u884c\u66f4\u987a\u7545\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>React\u81ea\u52a8\u4f38\u7f29\u6587\u672c\u7ec4\u4ef6\u52a8\u753b\u95ea\u70c1\uff1a\u5982\u4f55\u907f\u514d\u6e32\u67d3\u95ea\u70c1\uff1f \u5b66\u4e60\u77e5\u8bc6\u8981\u5584\u4e8e\u601d\u8003\uff0c\u601d\u8003\uff0c\u518d\u601d\u8003\uff01\u4eca\u5929\u7c73\u4e91\u5c0f\u7f16\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765\u300aReact\u81ea\u52a8\u4f38\u7f29\u6587\u672c\u7ec4\u4ef6\u52a8\u753b\u95ea\u70c1\uff1a\u5982\u4f55\u907f\u514d\u6e32\u67d3\u95ea\u70c1\uff1f\u300b\uff0c\u4ee5\u4e0b\u5185\u5bb9\u4e3b\u8981\u5305\u542b\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u6216\u51c6\u5907\u5b66\u4e60\u6587\u7ae0\uff0c\u5c31\u90fd\u4e0d\u8981\u9519\u8fc7\u672c\u6587\u5566~\u8ba9\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff0c\u80fd\u5e2e\u52a9\u5230\u4f60\u5c31\u66f4\u597d\u4e86\uff01 react \u4e2d\u81ea\u52a8\u4f38\u7f29\u6587\u672c\u7ec4\u4ef6\u7684\u52a8\u753b\u95ea\u70c1\u95ee\u9898 \u5728 react \u4e2d\u521b\u5efa\u4e86\u4e00\u4e2a\u81ea\u52a8\u6839\u636e\u6587\u672c\u957f\u5ea6\u7f29\u653e\u7684\u7ec4\u4ef6\uff0c\u4f46\u662f\u5728\u6587\u672c\u53d8\u5316\u65f6\uff0c\u7ec4\u4ef6\u5728\u7f29\u653e\u52a8\u753b\u4e2d\u4f1a\u4ea7\u751f\u95ea\u70c1\u95ee\u9898\u3002\u5982\u4f55\u89e3\u51b3\u8fd9\u79cd\u60c5\u51b5\uff1f \u89e3\u51b3\u65b9\u6848 \u901a\u8fc7\u4f7f\u7528 uselayouteffect \u4ee3\u66ff useeffect \u53ef\u4ee5\u51cf\u5c11\u52a8\u753b\u95ea\u70c1\u3002uselayouteffect \u4f1a\u5728\u7ec4\u4ef6\u6e32\u67d3\u524d\u8ba1\u7b97\uff0c\u800c useeffect \u5219\u662f\u5728\u6e32\u67d3\u540e\u8ba1\u7b97\u3002 \u5c06 useeffect \u4fee\u6539\u4e3a\u4ee5\u4e0b\u4ee3\u7801\uff1a useLayoutEffect(() =&gt; { const node = nodeRef.current; if (!node) return; \/\/ \u6bcf\u6b21text\u53d8\u5316\u65f6\uff0c\u6839\u636e\u6587\u672c\u957f\u5ea6\u8bbe\u5b9ascale \u8303\u56f4 const availableWidth = parentNodeOffsetWidth.current &#8211; 32; const actualWidth = node.offsetWidth; const actualScale = availableWidth \/ actualWidth; if (scale !== actualScale) { if (actualScale [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-53115","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/53115","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=53115"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/53115\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=53115"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=53115"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=53115"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}