{"id":3499,"date":"2024-11-10T15:58:43","date_gmt":"2024-11-10T07:58:43","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3499\/"},"modified":"2024-11-10T15:58:43","modified_gmt":"2024-11-10T07:58:43","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8js%e5%88%a4%e6%96%ad%e6%b5%8f%e8%a7%88%e5%99%a8%e6%98%af%e5%90%a6%e5%a4%84%e4%ba%8e%e6%b4%bb%e5%8a%a8%e7%aa%97%e5%8f%a3%e7%8a%b6%e6%80%81%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3499\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528JS\u5224\u65ad\u6d4f\u89c8\u5668\u662f\u5426\u5904\u4e8e\u6d3b\u52a8\u7a97\u53e3\u72b6\u6001\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/173104565131897.jpg\" class=\"aligncenter\" title=\"\u5982\u4f55\u4f7f\u7528JS\u5224\u65ad\u6d4f\u89c8\u5668\u662f\u5426\u5904\u4e8e\u6d3b\u52a8\u7a97\u53e3\u72b6\u6001\uff1f\u63d2\u56fe\" alt=\"\u5982\u4f55\u4f7f\u7528JS\u5224\u65ad\u6d4f\u89c8\u5668\u662f\u5426\u5904\u4e8e\u6d3b\u52a8\u7a97\u53e3\u72b6\u6001\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>js \u5224\u65ad\u6d4f\u89c8\u5668\u6d3b\u52a8\u7a97\u53e3\u72b6\u6001<\/strong><\/p>\n<p>\u60f3\u8981\u5224\u65ad\u6d4f\u89c8\u5668\u662f\u5426\u5904\u4e8e\u7cfb\u7edf\u5f53\u524d\u6d3b\u52a8\u7a97\u53e3\u72b6\u6001\uff0c\u76ee\u524d\u8fd8\u6ca1\u6709\u76f4\u63a5\u7684 js \u524d\u7aef\u4ee3\u7801\u65b9\u6cd5\u3002\u4e0d\u8fc7\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u95f4\u63a5\u5224\u65ad\uff1a<\/p>\n<ul>\n<li> <strong>visibilitychange \u4e8b\u4ef6\uff1a<\/strong> \u53ef\u5224\u65ad\u6807\u7b7e\u662f\u5426\u5904\u4e8e\u6fc0\u6d3b\u72b6\u6001\u3002\u5f53\u6807\u7b7e\u5207\u6362\u5230\u53e6\u4e00\u4e2a\u6807\u7b7e\u65f6\uff0c\u4f1a\u89e6\u53d1\u8be5\u4e8b\u4ef6\u3002<\/li>\n<li> <strong>focus \u4e8b\u4ef6\uff1a<\/strong> \u53ef\u5224\u65ad\u9875\u9762\u4e2d\u67d0\u4e2a\u7279\u5b9a\u7684\u5143\u7d20\u662f\u5426\u5177\u6709\u7126\u70b9\u3002\u5f53\u9875\u9762\u4e2d\u7684\u5143\u7d20\u83b7\u53d6\u7126\u70b9\u65f6\uff0c\u4f1a\u89e6\u53d1\u8be5\u4e8b\u4ef6\u3002<\/li>\n<\/ul>\n<p>\u7ed3\u5408\u4f7f\u7528\u8fd9\u4e24\u79cd\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5927\u81f4\u5224\u65ad\u9875\u9762\u662f\u5426\u5904\u4e8e\u6d3b\u52a8\u72b6\u6001\uff1a<\/p>\n<pre>\/\/ \u8bbe\u7f6e focus \u72b6\u6001\u6807\u5fd7\nlet hasFocus = true;\n\n\/\/ \u76d1\u542c visibilitychange \u4e8b\u4ef6\ndocument.addEventListener(\"visibilitychange\", () =&gt; {\n  if (document.visibilityState === \"hidden\") {\n    \/\/ \u6807\u7b7e\u4e0d\u5904\u4e8e\u6d3b\u52a8\u72b6\u6001\n    console.log(\"\u6807\u7b7e\u4e0d\u5904\u4e8e\u6d3b\u52a8\u72b6\u6001\");\n  } else if (document.hasFocus()) {\n    \/\/ \u6807\u7b7e\u5904\u4e8e\u6d3b\u52a8\u72b6\u6001\u4e14\u5143\u7d20\u5177\u6709\u7126\u70b9\n    console.log(\"\u6807\u7b7e\u5904\u4e8e\u6d3b\u52a8\u72b6\u6001\u4e14\u5143\u7d20\u5177\u6709\u7126\u70b9\");\n  }\n});\n\n\/\/ \u76d1\u542c focus\/blur \u4e8b\u4ef6\nelement.addEventListener(\"focus\", () =&gt; {\n  hasFocus = true;\n});\n\nelement.addEventListener(\"blur\", () =&gt; {\n  hasFocus = false;\n});<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4ee5\u4e0a\u65b9\u6cd5\u53ea\u80fd\u5927\u81f4\u5224\u65ad\u9875\u9762\u7684\u6d3b\u52a8\u72b6\u6001\uff0c\u56e0\u4e3a\u9875\u9762\u53ef\u80fd\u5904\u4e8e\u5176\u4ed6\u6807\u7b7e\u7684\u5b50\u9875\u9762\u4e2d\uff0c\u4ece\u800c\u5bfc\u81f4\u5224\u65ad\u4e0d\u51c6\u786e\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u4f7f\u7528JS\u5224\u65ad\u6d4f\u89c8\u5668\u662f\u5426\u5904\u4e8e\u6d3b\u52a8\u7a97\u53e3\u72b6\u6001\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>js \u5224\u65ad\u6d4f\u89c8\u5668\u6d3b\u52a8\u7a97\u53e3\u72b6\u6001 \u60f3\u8981\u5224\u65ad\u6d4f\u89c8\u5668\u662f\u5426\u5904\u4e8e\u7cfb\u7edf\u5f53\u524d\u6d3b\u52a8\u7a97\u53e3\u72b6\u6001\uff0c\u76ee\u524d\u8fd8\u6ca1\u6709\u76f4\u63a5\u7684 js \u524d\u7aef\u4ee3\u7801\u65b9\u6cd5\u3002\u4e0d\u8fc7\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u95f4\u63a5\u5224\u65ad\uff1a visibilitychange \u4e8b\u4ef6\uff1a \u53ef\u5224\u65ad\u6807\u7b7e\u662f\u5426\u5904\u4e8e\u6fc0\u6d3b\u72b6\u6001\u3002\u5f53\u6807\u7b7e\u5207\u6362\u5230\u53e6\u4e00\u4e2a\u6807\u7b7e\u65f6\uff0c\u4f1a\u89e6\u53d1\u8be5\u4e8b\u4ef6\u3002 focus \u4e8b\u4ef6\uff1a \u53ef\u5224\u65ad\u9875\u9762\u4e2d\u67d0\u4e2a\u7279\u5b9a\u7684\u5143\u7d20\u662f\u5426\u5177\u6709\u7126\u70b9\u3002\u5f53\u9875\u9762\u4e2d\u7684\u5143\u7d20\u83b7\u53d6\u7126\u70b9\u65f6\uff0c\u4f1a\u89e6\u53d1\u8be5\u4e8b\u4ef6\u3002 \u7ed3\u5408\u4f7f\u7528\u8fd9\u4e24\u79cd\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5927\u81f4\u5224\u65ad\u9875\u9762\u662f\u5426\u5904\u4e8e\u6d3b\u52a8\u72b6\u6001\uff1a \/\/ \u8bbe\u7f6e focus \u72b6\u6001\u6807\u5fd7 let hasFocus = true; \/\/ \u76d1\u542c visibilitychange \u4e8b\u4ef6 document.addEventListener(&#8220;visibilitychange&#8221;, () =&gt; { if (document.visibilityState === &#8220;hidden&#8221;) { \/\/ \u6807\u7b7e\u4e0d\u5904\u4e8e\u6d3b\u52a8\u72b6\u6001 console.log(&#8220;\u6807\u7b7e\u4e0d\u5904\u4e8e\u6d3b\u52a8\u72b6\u6001&#8221;); } else if (document.hasFocus()) { \/\/ \u6807\u7b7e\u5904\u4e8e\u6d3b\u52a8\u72b6\u6001\u4e14\u5143\u7d20\u5177\u6709\u7126\u70b9 console.log(&#8220;\u6807\u7b7e\u5904\u4e8e\u6d3b\u52a8\u72b6\u6001\u4e14\u5143\u7d20\u5177\u6709\u7126\u70b9&#8221;); } }); \/\/ \u76d1\u542c focus\/blur \u4e8b\u4ef6 element.addEventListener(&#8220;focus&#8221;, () =&gt; { hasFocus [&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-3499","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3499","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=3499"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3499\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=3499"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=3499"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=3499"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}