{"id":3289,"date":"2024-11-10T12:02:24","date_gmt":"2024-11-10T04:02:24","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3289\/"},"modified":"2024-11-10T12:02:24","modified_gmt":"2024-11-10T04:02:24","slug":"js%e5%a6%82%e4%bd%95%e7%bb%88%e6%ad%a2%e5%bc%82%e6%ad%a5","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3289\/","title":{"rendered":"js\u5982\u4f55\u7ec8\u6b62\u5f02\u6b65"},"content":{"rendered":"<blockquote><p>\n  \u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u7ec8\u6b62\u5f02\u6b65\u64cd\u4f5c\uff1a\u7ec8\u6b62 fetch \u8bf7\u6c42\uff1aabortcontroller.abort() \u65b9\u6cd5\u7ec8\u6b62 websocket\uff1aws.close() \u65b9\u6cd5\u7ec8\u6b62 settimeout\uff1acleartimeout() \u51fd\u6570\u7ec8\u6b62 setinterval\uff1aclearinterval() \u51fd\u6570\u7ec8\u6b62 promise\uff1apromise.reject() \u65b9\u6cd5\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/08\/2024110809064022223.jpg\" class=\"aligncenter\" title=\"js\u5982\u4f55\u7ec8\u6b62\u5f02\u6b65\u63d2\u56fe\" alt=\"js\u5982\u4f55\u7ec8\u6b62\u5f02\u6b65\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528 JavaScript \u7ec8\u6b62\u5f02\u6b65<\/strong><\/p>\n<p>\u5728 JavaScript \u4e2d\uff0c\u5f02\u6b65\u64cd\u4f5c\u5141\u8bb8\u4ee3\u7801\u5728\u4e0d\u963b\u585e\u4e3b\u7ebf\u7a0b\u7684\u60c5\u51b5\u4e0b\u6267\u884c\u3002\u7136\u800c\uff0c\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u7ec8\u6b62\u6b63\u5728\u8fdb\u884c\u7684\u5f02\u6b65\u64cd\u4f5c\u3002<\/p>\n<p><strong>\u7ec8\u6b62 Fetch \u8bf7\u6c42<\/strong><\/p>\n<p>Fetch API \u7528\u4e8e\u53d1\u51fa HTTP \u8bf7\u6c42\u3002\u8981\u7ec8\u6b62\u6b63\u5728\u8fdb\u884c\u7684 fetch \u8bf7\u6c42\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n<pre>\/\/ abortController.abort() \u65b9\u6cd5\u4f1a\u629b\u51fa\u4e00\u4e2a DOMException\uff0c\u7c7b\u578b\u4e3a AbortError\nconst abortController = new AbortController();\nconst fetchPromise = fetch(url, { signal: abortController.signal });\n\n\/\/ \u7ec8\u6b62\u8bf7\u6c42\nabortController.abort();<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u7ec8\u6b62 WebSocket<\/strong><\/p>\n<p>WebSocket \u5bf9\u8c61\u63d0\u4f9b\u4e86\u53cc\u5411\u901a\u4fe1\u901a\u9053\u3002\u8981\u7ec8\u6b62 WebSocket \u8fde\u63a5\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n<pre>const ws = new WebSocket('ws:\/\/localhost:8080');\n\n\/\/ \u5173\u95ed\u8fde\u63a5\nws.close();<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u7ec8\u6b62 setTimeout<\/strong><\/p>\n<p>setTimeout() \u51fd\u6570\u7528\u4e8e\u5728\u6307\u5b9a\u7684\u5ef6\u8fdf\u540e\u6267\u884c\u4e00\u4e2a\u56de\u8c03\u51fd\u6570\u3002\u8981\u7ec8\u6b62\u5df2\u8bbe\u7f6e\u7684 setTimeout\uff0c\u53ef\u4ee5\u4f7f\u7528 clearTimeout() \u51fd\u6570\uff1a<\/p>\n<pre>const timeoutId = setTimeout(() =&gt; {\n  console.log('\u5ef6\u8fdf\u6267\u884c');\n}, 1000);\n\n\/\/ \u6e05\u9664\u8d85\u65f6\nclearTimeout(timeoutId);<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u7ec8\u6b62 setInterval<\/strong><\/p>\n<p>setInterval() \u51fd\u6570\u7528\u4e8e\u5728\u6307\u5b9a\u7684\u95f4\u9694\u5185\u91cd\u590d\u6267\u884c\u56de\u8c03\u51fd\u6570\u3002\u8981\u7ec8\u6b62\u5df2\u8bbe\u7f6e\u7684 setInterval\uff0c\u53ef\u4ee5\u4f7f\u7528 clearInterval() \u51fd\u6570\uff1a<\/p>\n<pre>const intervalId = setInterval(() =&gt; {\n  console.log('\u5b9a\u65f6\u6267\u884c');\n}, 500);\n\n\/\/ \u6e05\u9664\u5b9a\u65f6\u5668\nclearInterval(intervalId);<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u7ec8\u6b62 Promise<\/strong><\/p>\n<p>Promise \u5bf9\u8c61\u8868\u793a\u4e00\u4e2a\u5f02\u6b65\u64cd\u4f5c\u7684\u7ed3\u679c\u3002\u8981\u7ec8\u6b62\u4e00\u4e2a\u6b63\u5728\u8fdb\u884c\u7684 Promise\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n<pre>\/\/ \u521b\u5efa\u4e00\u4e2a\u53ef\u88ab\u62d2\u7edd\u7684 Promise\nconst promise = new Promise((resolve, reject) =&gt; {\n  \/\/ ...\n});\n\n\/\/ \u62d2\u7edd Promise\npromise.reject(new Error('\u64cd\u4f5c\u88ab\u7ec8\u6b62'));<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjs\u5982\u4f55\u7ec8\u6b62\u5f02\u6b65\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>\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u7ec8\u6b62\u5f02\u6b65\u64cd\u4f5c\uff1a\u7ec8\u6b62 fetch \u8bf7\u6c42\uff1aabortcontroller.abort() \u65b9\u6cd5\u7ec8\u6b62 websocket\uff1aws.close() \u65b9\u6cd5\u7ec8\u6b62 settimeout\uff1acleartimeout() \u51fd\u6570\u7ec8\u6b62 setinterval\uff1aclearinterval() \u51fd\u6570\u7ec8\u6b62 promise\uff1apromise.reject() \u65b9\u6cd5 \u5982\u4f55\u4f7f\u7528 JavaScript \u7ec8\u6b62\u5f02\u6b65 \u5728 JavaScript \u4e2d\uff0c\u5f02\u6b65\u64cd\u4f5c\u5141\u8bb8\u4ee3\u7801\u5728\u4e0d\u963b\u585e\u4e3b\u7ebf\u7a0b\u7684\u60c5\u51b5\u4e0b\u6267\u884c\u3002\u7136\u800c\uff0c\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u7ec8\u6b62\u6b63\u5728\u8fdb\u884c\u7684\u5f02\u6b65\u64cd\u4f5c\u3002 \u7ec8\u6b62 Fetch \u8bf7\u6c42 Fetch API \u7528\u4e8e\u53d1\u51fa HTTP \u8bf7\u6c42\u3002\u8981\u7ec8\u6b62\u6b63\u5728\u8fdb\u884c\u7684 fetch \u8bf7\u6c42\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a \/\/ abortController.abort() \u65b9\u6cd5\u4f1a\u629b\u51fa\u4e00\u4e2a DOMException\uff0c\u7c7b\u578b\u4e3a AbortError const abortController = new AbortController(); const fetchPromise = fetch(url, { signal: abortController.signal }); \/\/ \u7ec8\u6b62\u8bf7\u6c42 abortController.abort(); \u767b\u5f55\u540e\u590d\u5236 \u7ec8\u6b62 WebSocket WebSocket \u5bf9\u8c61\u63d0\u4f9b\u4e86\u53cc\u5411\u901a\u4fe1\u901a\u9053\u3002\u8981\u7ec8\u6b62 WebSocket [&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-3289","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3289","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=3289"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3289\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=3289"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=3289"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=3289"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}