{"id":3321,"date":"2024-11-10T08:14:53","date_gmt":"2024-11-10T00:14:53","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3321\/"},"modified":"2024-11-10T08:14:53","modified_gmt":"2024-11-10T00:14:53","slug":"%e5%8e%9f%e7%94%9fjs%e5%a6%82%e4%bd%95%e5%88%b7%e6%96%b0%e6%95%b0%e6%8d%ae","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3321\/","title":{"rendered":"\u539f\u751fjs\u5982\u4f55\u5237\u65b0\u6570\u636e"},"content":{"rendered":"<blockquote><p>\n  \u539f\u751f javascript \u5237\u65b0\u6570\u636e\u7684\u51e0\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528 fetch api\uff1a\u8c03\u7528 fetch() \u65b9\u6cd5\u83b7\u53d6\u6570\u636e\uff0c\u5e76\u5728\u6570\u636e\u66f4\u6539\u65f6\u518d\u6b21\u8c03\u7528\u4ee5\u83b7\u53d6\u66f4\u65b0\u3002\u4f7f\u7528 websocket\uff1a\u5efa\u7acb websocket \u8fde\u63a5\uff0c\u4ee5\u4fbf\u670d\u52a1\u5668\u5728\u6570\u636e\u66f4\u65b0\u65f6\u63a8\u9001\u6570\u636e\u3002\u4f7f\u7528\u8f6e\u8be2\uff1a\u5b9a\u671f\u5411\u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42\uff0c\u5e76\u5728\u6570\u636e\u66f4\u65b0\u65f6\u83b7\u53d6\u5e76\u663e\u793a\u65b0\u6570\u636e\u3002\u4f7f\u7528\u7b2c\u4e09\u65b9\u5e93\uff1a\u5229\u7528\u7b2c\u4e09\u65b9\u5e93\u63d0\u4f9b\u7684\u5185\u7f6e\u673a\u5236\u7b80\u5316\u6570\u636e\u7684\u7ba1\u7406\u548c\u5237\u65b0\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/08\/2024110809423010110.jpg\" class=\"aligncenter\" title=\"\u539f\u751fjs\u5982\u4f55\u5237\u65b0\u6570\u636e\u63d2\u56fe\" alt=\"\u539f\u751fjs\u5982\u4f55\u5237\u65b0\u6570\u636e\u63d2\u56fe\" \/><\/p>\n<p><strong>\u539f\u751f JavaScript \u4e2d\u5237\u65b0\u6570\u636e\u7684\u51e0\u79cd\u65b9\u6cd5<\/strong><\/p>\n<p><strong>\u4f7f\u7528 fetch API<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528 fetch() \u65b9\u6cd5\u4ece\u670d\u52a1\u5668\u83b7\u53d6\u6570\u636e\u3002<\/li>\n<li>\u5f53\u6570\u636e\u6539\u53d8\u65f6\uff0c\u518d\u6b21\u8c03\u7528 fetch() \u65b9\u6cd5\u4ee5\u83b7\u53d6\u66f4\u65b0\u7684\u6570\u636e\u3002<\/li>\n<li>\u4f8b\u5982\uff1a<\/li>\n<\/ul>\n<pre>const fetchAndUpdateData = () =&gt; {\n  fetch('data.json')\n    .then(response =&gt; response.json())\n    .then(data =&gt; {\n      \/\/ \u66f4\u65b0\u6570\u636e\n    })\n    .catch(error =&gt; {\n      console.error(error);\n    });\n};<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u4f7f\u7528 WebSocket<\/strong><\/p>\n<ul>\n<li>\u5efa\u7acb\u4e00\u4e2a WebSocket \u8fde\u63a5\uff0c\u4ee5\u4fbf\u670d\u52a1\u5668\u53ef\u4ee5\u5728\u6570\u636e\u66f4\u65b0\u65f6\u63a8\u9001\u6570\u636e\u3002<\/li>\n<li>\u5728 onmessage \u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u4e2d\u5904\u7406\u66f4\u65b0\u7684\u6570\u636e\u3002<\/li>\n<li>\u4f8b\u5982\uff1a<\/li>\n<\/ul>\n<pre>const socket = new WebSocket('ws:\/\/localhost:8080');\n\nsocket.onopen = () =&gt; {\n  console.log('WebSocket connection established');\n};\n\nsocket.onmessage = (event) =&gt; {\n  \/\/ \u66f4\u65b0\u6570\u636e\n};\n\nsocket.onerror = (error) =&gt; {\n  console.error('WebSocket connection error:', error);\n};<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u4f7f\u7528\u8f6e\u8be2\uff08Polling\uff09<\/strong><\/p>\n<ul>\n<li>\u5b9a\u671f\u53d1\u9001\u8bf7\u6c42\u5230\u670d\u52a1\u5668\u4ee5\u68c0\u67e5\u6570\u636e\u662f\u5426\u5df2\u66f4\u65b0\u3002<\/li>\n<li>\u5982\u679c\u6570\u636e\u5df2\u66f4\u65b0\uff0c\u5219\u83b7\u53d6\u5e76\u663e\u793a\u65b0\u6570\u636e\u3002<\/li>\n<li>\u4f8b\u5982\uff1a<\/li>\n<\/ul>\n<pre>const pollAndUpdateData = () =&gt; {\n  setTimeout(() =&gt; {\n    \/\/ \u53d1\u9001\u8bf7\u6c42\u5230\u670d\u52a1\u5668\n    \/\/ \u66f4\u65b0\u6570\u636e\n    pollAndUpdateData();\n  }, 1000); \/\/ \u6bcf\u79d2\u8f6e\u8be2\u4e00\u6b21\n};<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u4f7f\u7528\u7b2c\u4e09\u65b9\u5e93<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528\u7b2c\u4e09\u65b9\u5e93\uff08\u4f8b\u5982\uff1ajQuery\u3001Axios \u6216 Vue.js\uff09\u53ef\u4ee5\u7b80\u5316\u6570\u636e\u7684\u7ba1\u7406\u548c\u5237\u65b0\u3002<\/li>\n<li>\u8fd9\u4e9b\u5e93\u901a\u5e38\u63d0\u4f9b\u5185\u7f6e\u673a\u5236\u6765\u5904\u7406\u6570\u636e\u5237\u65b0\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u539f\u751fjs\u5982\u4f55\u5237\u65b0\u6570\u636e\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>\u539f\u751f javascript \u5237\u65b0\u6570\u636e\u7684\u51e0\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528 fetch api\uff1a\u8c03\u7528 fetch() \u65b9\u6cd5\u83b7\u53d6\u6570\u636e\uff0c\u5e76\u5728\u6570\u636e\u66f4\u6539\u65f6\u518d\u6b21\u8c03\u7528\u4ee5\u83b7\u53d6\u66f4\u65b0\u3002\u4f7f\u7528 websocket\uff1a\u5efa\u7acb websocket \u8fde\u63a5\uff0c\u4ee5\u4fbf\u670d\u52a1\u5668\u5728\u6570\u636e\u66f4\u65b0\u65f6\u63a8\u9001\u6570\u636e\u3002\u4f7f\u7528\u8f6e\u8be2\uff1a\u5b9a\u671f\u5411\u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42\uff0c\u5e76\u5728\u6570\u636e\u66f4\u65b0\u65f6\u83b7\u53d6\u5e76\u663e\u793a\u65b0\u6570\u636e\u3002\u4f7f\u7528\u7b2c\u4e09\u65b9\u5e93\uff1a\u5229\u7528\u7b2c\u4e09\u65b9\u5e93\u63d0\u4f9b\u7684\u5185\u7f6e\u673a\u5236\u7b80\u5316\u6570\u636e\u7684\u7ba1\u7406\u548c\u5237\u65b0\u3002 \u539f\u751f JavaScript \u4e2d\u5237\u65b0\u6570\u636e\u7684\u51e0\u79cd\u65b9\u6cd5 \u4f7f\u7528 fetch API \u4f7f\u7528 fetch() \u65b9\u6cd5\u4ece\u670d\u52a1\u5668\u83b7\u53d6\u6570\u636e\u3002 \u5f53\u6570\u636e\u6539\u53d8\u65f6\uff0c\u518d\u6b21\u8c03\u7528 fetch() \u65b9\u6cd5\u4ee5\u83b7\u53d6\u66f4\u65b0\u7684\u6570\u636e\u3002 \u4f8b\u5982\uff1a const fetchAndUpdateData = () =&gt; { fetch(&#8216;data.json&#8217;) .then(response =&gt; response.json()) .then(data =&gt; { \/\/ \u66f4\u65b0\u6570\u636e }) .catch(error =&gt; { console.error(error); }); }; \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528 WebSocket \u5efa\u7acb\u4e00\u4e2a WebSocket \u8fde\u63a5\uff0c\u4ee5\u4fbf\u670d\u52a1\u5668\u53ef\u4ee5\u5728\u6570\u636e\u66f4\u65b0\u65f6\u63a8\u9001\u6570\u636e\u3002 \u5728 onmessage \u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u4e2d\u5904\u7406\u66f4\u65b0\u7684\u6570\u636e\u3002 \u4f8b\u5982\uff1a [&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-3321","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3321","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=3321"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3321\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=3321"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=3321"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=3321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}