{"id":4910,"date":"2024-12-30T23:19:57","date_gmt":"2024-12-30T15:19:57","guid":{"rendered":"https:\/\/qaqaq.top\/?p=4910"},"modified":"2024-12-30T23:28:52","modified_gmt":"2024-12-30T15:28:52","slug":"javascript-%e8%ae%be%e7%bd%ae%e7%9d%a1%e7%9c%a0%e7%9a%84%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=4910","title":{"rendered":"JavaScript \u8bbe\u7f6e\u7761\u7720\u7684\u95ee\u9898"},"content":{"rendered":"\n

\u5b9a\u65f6\u6bcf\u591a\u5c11\u79d2\u53d1\u9001\u4e00\u4e2a\u8bf7\u6c42 \u7684\u4e24\u79cd\u5199\u6cd5<\/h2>\n\n\n\n

\u5199\u6cd5\u4e00\uff0cfor\u5faa\u73af<\/h4>\n\n\n\n
for (let i = 0; i < 10; i++) {\n    setTimeout(() => {\n        console.log(i);\n    }, 2000 * i);\n}\n\nonClick();<\/code><\/pre>\n\n\n\n
\u5199\u6cd5\u4e8c\uff0c\u9012\u5f52\u51fd\u6570<\/h4>\n\n\n\n
function demo(index) {\n    console.log(index)\n    if (index == 10) {\n        return\n    }\n    setTimeout(() => {\n        demo(index + 1);\n    }, 2000);\n}\ndemo(0);\n\nonClick();<\/code><\/pre>\n\n\n\n
\u5199\u6cd5\u4e00\u7684\u9519\u8bef\u793a\u4f8b<\/h2>\n\n\n\n
\u5199\u6cd5\u4e00\u7684\u9519\u8bef\u793a\u4f8b\uff0c\u95ee\u9898\u5728\u4e8e setTimeout \u7684\u56de\u8c03\u51fd\u6570\u90fd\u88ab\u5b89\u6392\u5728\u4e24\u79d2\u540e\u6267\u884c<\/h4>\n\n\n\n
for (let i = 0; i < 10; i++) {\n    setTimeout(() => {\n        console.log(i);\n    }, 2000);\n}\n\nonClick();<\/code><\/pre>\n\n\n\n
\u5728\u539f\u59cb\u7684 for \u5faa\u73af\u4e2d\u8bbe\u7f6e\u5b9a\u65f6\u5668\u4f1a\u5bfc\u81f4\u6240\u6709\u8bf7\u6c42\u51e0\u4e4e\u540c\u65f6\u542f\u52a8\uff0c\u56e0\u4e3a setTimeout \u51fd\u6570\u4e0d\u4f1a\u963b\u585e\u4ee3\u7801\u7684\u6267\u884c\uff0c\u800c\u662f\u5c06\u51fd\u6570\u7684\u6267\u884c\u63a8\u8fdf\u5230\u6307\u5b9a\u7684\u65f6\u95f4\u540e\u3002\u5982\u679c\u4f60\u5728 for \u5faa\u73af\u4e2d\u4e3a\u6bcf\u4e2a\u8bf7\u6c42\u8bbe\u7f6e\u4e00\u4e2a\u5b9a\u65f6\u5668\uff0c\u6240\u6709\u7684\u8bf7\u6c42\u90fd\u5c06\u5728\u5927\u7ea6\u540c\u4e00\u65f6\u95f4\u5f00\u59cb\uff0c\u800c\u4e0d\u662f\u4f9d\u6b21\u7b49\u5f85\u524d\u4e00\u4e2a\u8bf7\u6c42\u5b8c\u6210\u540e\u518d\u5f00\u59cb\u3002<\/p>\n\n\n\n
\u5199\u6cd5\u4e00\u7684\u9519\u8bef\u793a\u4f8b\uff0c\u6253\u5370\u7684\u503c\u4f1a\u5168\u4e3a 10\uff0c\u5e76\u4e14\u6240\u6709\u6570\u636e\u90fd\u5728\u4e24\u79d2\u540e\u540c\u65f6\u6267\u884c<\/h4>\n\n\n\n
for (var i = 0; i < 10; i++) {\n    setTimeout(() => {\n        console.log(i);\n    }, 2000);\n}\n\nonClick();<\/code><\/pre>\n\n\n\n
\u7531\u4e8e setTimeout<\/code> \u7684\u56de\u8c03\u51fd\u6570\u662f\u5728\u5168\u5c40\u4f5c\u7528\u57df\u4e2d\u6267\u884c\u7684\uff0c\u5b83\u4eec\u90fd\u4f1a\u8bbf\u95ee\u5230 for<\/code> \u5faa\u73af\u7ed3\u675f\u540e i<\/code> \u7684\u6700\u7ec8\u503c\uff0c\u8fd9\u901a\u5e38\u662f 10\uff08\u9664\u975e\u5faa\u73af\u56e0\u4e3a\u67d0\u4e9b\u539f\u56e0\u63d0\u524d\u7ec8\u6b62\uff09\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u4f60\u4f1a\u770b\u5230\u6240\u6709\u7684\u56de\u8c03\u51e0\u4e4e\u540c\u65f6\u6253\u5370\u51fa 10<\/code> \u7684\u539f\u56e0\u3002<\/p>\n\n\n\n
\u5982\u679c\u60f3\u8981\u6bcf\u4e2a\u56de\u8c03\u6253\u5370\u51fa\u5b83\u5bf9\u5e94\u7684\u8fed\u4ee3\u503c\uff0c\u5e94\u8be5\u4f7f\u7528 let<\/code> \u800c\u4e0d\u662f var<\/code> \u6765\u58f0\u660e\u5faa\u73af\u53d8\u91cf i<\/code>\uff0c\u56e0\u4e3a let<\/code> \u6709\u5757\u7ea7\u4f5c\u7528\u57df\uff0c\u6bcf\u4e2a\u56de\u8c03\u90fd\u4f1a\u6355\u83b7\u6bcf\u6b21\u8fed\u4ee3\u65f6 i<\/code> \u7684\u503c<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b9a\u65f6\u6bcf\u591a\u5c11\u79d2\u53d1\u9001\u4e00\u4e2a\u8bf7\u6c42 \u7684\u4e24\u79cd\u5199\u6cd5 \u5199\u6cd5\u4e00\uff0cfor\u5faa\u73af \u5199\u6cd5\u4e8c\uff0c\u9012\u5f52\u51fd\u6570 \u5199\u6cd5\u4e00\u7684\u9519\u8bef\u793a\u4f8b \u5199\u6cd5\u4e00\u7684\u9519\u8bef\u793a\u4f8b […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[187],"tags":[189],"class_list":["post-4910","post","type-post","status-publish","format-standard","hentry","category-react-","tag-react"],"_links":{"self":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/4910"}],"collection":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4910"}],"version-history":[{"count":9,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/4910\/revisions"}],"predecessor-version":[{"id":4921,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/4910\/revisions\/4921"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4910"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4910"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4910"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}