{"id":32561,"date":"2024-11-25T16:26:53","date_gmt":"2024-11-25T08:26:53","guid":{"rendered":"https:\/\/fwq.ai\/blog\/32561\/"},"modified":"2024-11-25T16:26:53","modified_gmt":"2024-11-25T08:26:53","slug":"%e8%a7%a3%e8%af%bbjavascript%e4%b8%ad%e7%9a%84%e4%ba%8b%e4%bb%b6%e5%be%aa%e7%8e%af","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/32561\/","title":{"rendered":"\u89e3\u8bfbJavaScript\u4e2d\u7684\u4e8b\u4ef6\u5faa\u73af"},"content":{"rendered":"

\"\u89e3\u8bfbJavaScript\u4e2d\u7684\u4e8b\u4ef6\u5faa\u73af\u63d2\u56fe\"<\/p>\n

\u60a8\u53ef\u80fd\u5df2\u7ecf\u77e5\u9053 JavaScript \u662f\u4e00\u79cd\u5355\u7ebf\u7a0b\u7f16\u7a0b\u8bed\u8a00\u3002\u8fd9\u610f\u5473\u7740 JavaScript \u5728 Web \u6d4f\u89c8\u5668\u6216 Node.js \u4e2d\u7684\u5355\u4e2a\u4e3b\u7ebf\u7a0b\u4e0a\u8fd0\u884c\u3002\u5728\u5355\u4e2a\u4e3b\u7ebf\u7a0b\u4e0a\u8fd0\u884c\u610f\u5473\u7740\u4e00\u6b21\u4ec5\u8fd0\u884c\u4e00\u6bb5 JavaScript \u4ee3\u7801\u3002<\/p>\n

JavaScript \u4e2d\u7684\u4e8b\u4ef6\u5faa\u73af\u5728\u786e\u5b9a\u4ee3\u7801\u5982\u4f55\u5728\u4e3b\u7ebf\u7a0b\u4e0a\u6267\u884c\u65b9\u9762\u53d1\u6325\u7740\u91cd\u8981\u4f5c\u7528\u3002\u4e8b\u4ef6\u5faa\u73af\u8d1f\u8d23\u4e00\u4e9b\u4e8b\u60c5\uff0c\u4f8b\u5982\u4ee3\u7801\u7684\u6267\u884c\u4ee5\u53ca\u4e8b\u4ef6\u7684\u6536\u96c6\u548c\u5904\u7406\u3002\u5b83\u8fd8\u5904\u7406\u4efb\u4f55\u6392\u961f\u5b50\u4efb\u52a1\u7684\u6267\u884c\u3002<\/p>\n

\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u60a8\u5c06\u5b66\u4e60 JavaScript \u4e2d\u4e8b\u4ef6\u5faa\u73af\u7684\u57fa\u7840\u77e5\u8bc6\u3002<\/p>\n

\u4e8b\u4ef6\u5faa\u73af\u5982\u4f55\u5de5\u4f5c<\/h2>\n

\u4e3a\u4e86\u7406\u89e3\u4e8b\u4ef6\u5faa\u73af\u7684\u5de5\u4f5c\u539f\u7406\uff0c\u60a8\u9700\u8981\u4e86\u89e3\u4e09\u4e2a\u91cd\u8981\u672f\u8bed\u3002<\/p>\n

\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n

\u5806\u6808<\/h4>\n

\u8c03\u7528\u5806\u6808\u53ea\u662f\u8ddf\u8e2a\u51fd\u6570\u6267\u884c\u4e0a\u4e0b\u6587\u7684\u51fd\u6570\u8c03\u7528\u5806\u6808\u3002\u8be5\u5806\u6808\u9075\u5faa\u540e\u8fdb\u5148\u51fa (LIFO) \u539f\u5219\uff0c\u8fd9\u610f\u5473\u7740\u6700\u8fd1\u8c03\u7528\u7684\u51fd\u6570\u5c06\u662f\u7b2c\u4e00\u4e2a\u6267\u884c\u7684\u51fd\u6570\u3002<\/p>\n

\u961f\u5217<\/h4>\n

\u961f\u5217\u5305\u542b\u4e00\u7cfb\u5217\u7531 JavaScript \u6267\u884c\u7684\u4efb\u52a1\u3002\u8be5\u961f\u5217\u4e2d\u7684\u4efb\u52a1\u53ef\u80fd\u4f1a\u5bfc\u81f4\u8c03\u7528\u51fd\u6570\uff0c\u7136\u540e\u5c06\u5176\u653e\u5165\u5806\u6808\u4e2d\u3002\u4ec5\u5f53\u5806\u6808\u4e3a\u7a7a\u65f6\u624d\u5f00\u59cb\u961f\u5217\u7684\u5904\u7406\u3002\u961f\u5217\u4e2d\u7684\u9879\u76ee\u9075\u5faa\u5148\u8fdb\u5148\u51fa (FIFO) \u539f\u5219\u3002\u8fd9\u610f\u5473\u7740\u6700\u65e7\u7684\u4efb\u52a1\u5c06\u9996\u5148\u5b8c\u6210\u3002<\/p>\n

\u5806<\/h4>\n

\u5806\u57fa\u672c\u4e0a\u662f\u5b58\u50a8\u548c\u5206\u914d\u5bf9\u8c61\u7684\u4e00\u5927\u5757\u5185\u5b58\u533a\u57df\u3002\u5b83\u7684\u4e3b\u8981\u76ee\u7684\u662f\u5b58\u50a8\u5806\u6808\u4e2d\u7684\u51fd\u6570\u53ef\u80fd\u4f7f\u7528\u7684\u6570\u636e\u3002<\/p>\n

\u57fa\u672c\u4e0a\uff0cJavaScript \u662f\u5355\u7ebf\u7a0b\u7684\uff0c\u4e00\u6b21\u6267\u884c\u4e00\u4e2a\u51fd\u6570\u3002\u8fd9\u4e2a\u5355\u4e00\u51fd\u6570\u88ab\u653e\u7f6e\u5728\u5806\u6808<\/strong>\u4e0a\u3002\u8be5\u51fd\u6570\u8fd8\u53ef\u4ee5\u5305\u542b\u5176\u4ed6\u5d4c\u5957\u51fd\u6570\uff0c\u8fd9\u4e9b\u51fd\u6570\u5c06\u653e\u7f6e\u5728\u5806\u6808\u4e2d\u7684\u4e0a\u65b9\u3002\u5806\u6808\u9075\u5faa LIFO \u539f\u5219\uff0c\u56e0\u6b64\u6700\u8fd1\u8c03\u7528\u7684\u5d4c\u5957\u51fd\u6570\u5c06\u9996\u5148\u6267\u884c\u3002<\/p>\n

API \u8bf7\u6c42\u6216\u8ba1\u65f6\u5668\u7b49\u5f02\u6b65\u4efb\u52a1\u5c06\u6dfb\u52a0\u5230\u961f\u5217<\/strong>\u4ee5\u4fbf\u7a0d\u540e\u6267\u884c\u3002 JavaScript \u5f15\u64ce\u5728\u7a7a\u95f2\u65f6\u5f00\u59cb\u6267\u884c\u961f\u5217\u4e2d\u7684\u4efb\u52a1\u3002<\/p>\n

\u8003\u8651\u4ee5\u4e0b\u793a\u4f8b\uff1a<\/p>\n

function helloWorld() {\n    console.log(\"Hello, World!\");\n}\n\nfunction helloPerson(name) {\n    console.log(`Hello, ${name}!`);\n}\n\nfunction helloTeam() {\n    console.log(\"Hello, Team!\");\n    helloPerson(\"Monty\");\n}\n\nfunction byeWorld() {\n    console.log(\"Bye, World!\");\n}\n\nhelloWorld();\nhelloTeam();\nbyeWorld();\n\n\/* Outputs:\n\nHello, World!\nHello, Team!\nHello, Monty!\nBye, World!\n\n*\/\n<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8ba9\u6211\u4eec\u770b\u770b\u5982\u679c\u8fd0\u884c\u4e0a\u9762\u7684\u4ee3\u7801\uff0c\u5806\u6808\u548c\u961f\u5217\u4f1a\u662f\u4ec0\u4e48\u6837\u5b50\u3002<\/p>\n
\u8c03\u7528 helloWorld() \u51fd\u6570\u5e76\u5c06\u5176\u653e\u5165\u5806\u6808\u4e2d\u3002\u5b83\u8bb0\u5f55 Hello, World!<\/strong> \u5b8c\u6210\u5176\u6267\u884c\uff0c\u56e0\u6b64\u5b83\u88ab\u4ece\u5806\u6808\u4e2d\u53d6\u51fa\u3002\u63a5\u4e0b\u6765\u8c03\u7528 helloTeam() \u51fd\u6570\u5e76\u5c06\u5176\u653e\u5165\u5806\u6808\u4e2d\u3002\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u8bb0\u5f55 Hello, Team!<\/strong> \u5e76\u8c03\u7528 helloPerson()\u3002 helloTeam() \u7684\u6267\u884c\u8fd8\u6ca1\u6709\u5b8c\u6210\uff0c\u6240\u4ee5\u5b83\u505c\u7559\u5728\u5806\u6808\u4e0a\uff0c\u800c helloPerson() \u5219\u653e\u5728\u5b83\u4e0a\u9762\u3002<\/p>\n
\u540e\u8fdb\u5148\u51fa\u539f\u5219\u89c4\u5b9a helloPerson() \u73b0\u5728\u6267\u884c\u3002\u8fd9\u4f1a\u5c06 Hello, Monty!<\/strong> \u8bb0\u5f55\u5230\u63a7\u5236\u53f0\uff0c\u4ece\u800c\u5b8c\u6210\u5176\u6267\u884c\uff0c\u5e76\u4e14 helloPerson() \u5c06\u4ece\u5806\u6808\u4e2d\u53d6\u51fa\u3002\u4e4b\u540e helloTeam() \u51fd\u6570\u5c31\u4f1a\u51fa\u6808\uff0c\u6211\u4eec\u6700\u7ec8\u5230\u8fbe byeWorld()\u3002\u5b83\u4f1a\u8bb0\u5f55\u518d\u89c1\uff0c\u4e16\u754c\uff01<\/strong>\uff0c\u7136\u540e\u4ece\u5806\u6808\u4e2d\u6d88\u5931\u3002<\/p>\n
\u961f\u5217\u4e00\u76f4\u662f\u7a7a\u7684\u3002<\/p>\n
\u73b0\u5728\uff0c\u8003\u8651\u4e0a\u8ff0\u4ee3\u7801\u7684\u7ec6\u5fae\u53d8\u5316\uff1a<\/p>\n
function helloWorld() {\n    console.log(\"Hello, World!\");\n}\n\nfunction helloPerson(name) {\n    console.log(`Hello, ${name}!`);\n}\n\nfunction helloTeam() {\n    console.log(\"Hello, Team!\");\n    setTimeout(() =&gt; {\n        helloPerson(\"Monty\");\n    }, 0);\n}\n\nfunction byeWorld() {\n    console.log(\"Bye, World!\");\n}\n\nhelloWorld();\nhelloTeam();\nbyeWorld();\n\n\/* Outputs:\n\nHello, World!\nHello, Team!\nBye, World!\nHello, Monty!\n\n*\/\n<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6211\u4eec\u5728\u8fd9\u91cc\u6240\u505a\u7684\u552f\u4e00\u66f4\u6539\u662f\u4f7f\u7528 setTimeout()\u3002\u4f46\u662f\uff0c\u8d85\u65f6\u5df2\u8bbe\u7f6e\u4e3a\u96f6\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u671f\u671b Hello, Monty!<\/strong> \u5728 Bye, World!<\/strong> \u4e4b\u524d\u8f93\u51fa\u3002\u5982\u679c\u60a8\u4e86\u89e3\u4e8b\u4ef6\u5faa\u73af\u7684\u5de5\u4f5c\u539f\u7406\uff0c\u60a8\u5c31\u4f1a\u660e\u767d\u4e3a\u4ec0\u4e48\u4e0d\u4f1a\u53d1\u751f\u8fd9\u79cd\u60c5\u51b5\u3002 <\/p>\n
\u5f53helloTeam()\u5165\u6808\u65f6\uff0c\u9047\u5230setTimeout()\u65b9\u6cd5\u3002\u4f46\u662f\uff0csetTimeout() \u4e2d\u5bf9 helloPerson() \u7684\u8c03\u7528\u4f1a\u88ab\u653e\u5165\u961f\u5217\u4e2d\uff0c\u4e00\u65e6\u6ca1\u6709\u540c\u6b65\u4efb\u52a1\u9700\u8981\u6267\u884c\uff0c\u5c31\u4f1a\u88ab\u6267\u884c\u3002<\/p>\n
\u4e00\u65e6\u5bf9 byeWorld() \u7684\u8c03\u7528\u5b8c\u6210\uff0c\u4e8b\u4ef6\u5faa\u73af\u5c06\u68c0\u67e5\u961f\u5217\u4e2d\u662f\u5426\u6709\u4efb\u4f55\u6302\u8d77\u7684\u4efb\u52a1\uff0c\u5e76\u627e\u5230\u5bf9 helloPerson() \u7684\u8c03\u7528\u3002\u6b64\u65f6\uff0c\u5b83\u6267\u884c\u8be5\u51fd\u6570\u5e76\u5c06 Hello, Monty!<\/strong> \u8bb0\u5f55\u5230\u63a7\u5236\u53f0\u3002<\/p>\n
\u8fd9\u8868\u660e\u60a8\u63d0\u4f9b\u7ed9 setTimeout() \u7684\u8d85\u65f6\u6301\u7eed\u65f6\u95f4\u5e76\u4e0d\u662f\u56de\u8c03\u6267\u884c\u7684\u4fdd\u8bc1\u65f6\u95f4\u3002\u8fd9\u662f\u6267\u884c\u56de\u8c03\u7684\u6700\u77ed\u65f6\u95f4\u3002<\/p>\n
\u4fdd\u6301\u6211\u4eec\u7684\u7f51\u9875\u54cd\u5e94<\/h2>\n
JavaScript \u7684\u4e00\u4e2a\u6709\u8da3\u7684\u7279\u6027\u662f\u5b83\u4f1a\u8fd0\u884c\u4e00\u4e2a\u51fd\u6570\u76f4\u5230\u5b8c\u6210\u3002\u8fd9\u610f\u5473\u7740\u53ea\u8981\u51fd\u6570\u5728\u5806\u6808\u4e0a\uff0c\u4e8b\u4ef6\u5faa\u73af\u5c31\u65e0\u6cd5\u5904\u7406\u961f\u5217\u4e2d\u7684\u4efb\u4f55\u5176\u4ed6\u4efb\u52a1\u6216\u6267\u884c\u5176\u4ed6\u51fd\u6570\u3002<\/p>\n
\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7f51\u9875\u201c\u6302\u8d77\u201d\uff0c\u56e0\u4e3a\u5b83\u65e0\u6cd5\u6267\u884c\u5176\u4ed6\u64cd\u4f5c\uff0c\u4f8b\u5982\u5904\u7406\u7528\u6237\u8f93\u5165\u6216\u8fdb\u884c\u4e0e DOM \u76f8\u5173\u7684\u66f4\u6539\u3002\u8003\u8651\u4ee5\u4e0b\u793a\u4f8b\uff0c\u6211\u4eec\u5728\u5176\u4e2d\u67e5\u627e\u7ed9\u5b9a\u8303\u56f4\u5185\u7684\u7d20\u6570\u6570\u91cf\uff1a<\/p>\n
function isPrime(num) {\n  if (num \n<p>\u5728\u6211\u4eec\u7684 listPrimesInRange() \u51fd\u6570\u4e2d\uff0c\u6211\u4eec\u8fed\u4ee3\u4ece start \u5230 end \u7684\u6570\u5b57\u3002\u5bf9\u4e8e\u6bcf\u4e2a\u6570\u5b57\uff0c\u6211\u4eec\u8c03\u7528 isPrime() \u51fd\u6570\u6765\u67e5\u770b\u5b83\u662f\u5426\u662f\u7d20\u6570\u3002 isPrime() \u51fd\u6570\u672c\u8eab\u6709\u4e00\u4e2a for \u5faa\u73af\uff0c\u8be5\u5faa\u73af\u4ece 2 \u5230 Math.sqrt(num) \u6765\u786e\u5b9a\u6570\u5b57\u662f\u5426\u4e3a\u7d20\u6570\u3002<\/p>\n<p>\u67e5\u627e\u7ed9\u5b9a\u8303\u56f4\u5185\u7684\u6240\u6709\u7d20\u6570\u53ef\u80fd\u9700\u8981\u4e00\u6bb5\u65f6\u95f4\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u60a8\u4f7f\u7528\u7684\u503c\u3002\u5f53\u6d4f\u89c8\u5668\u8fdb\u884c\u6b64\u8ba1\u7b97\u65f6\uff0c\u5b83\u65e0\u6cd5\u6267\u884c\u4efb\u4f55\u5176\u4ed6\u64cd\u4f5c\u3002\u8fd9\u662f\u56e0\u4e3a listPrimesInRange() \u51fd\u6570\u5c06\u4fdd\u7559\u5728\u5806\u6808\u4e2d\uff0c\u6d4f\u89c8\u5668\u5c06\u65e0\u6cd5\u6267\u884c\u961f\u5217\u4e2d\u7684\u4efb\u4f55\u5176\u4ed6\u4efb\u52a1\u3002<\/p>\n<p>\u73b0\u5728\uff0c\u770b\u4e00\u4e0b\u4ee5\u4e0b\u51fd\u6570\uff1a<\/p>\n<pre class=\"brush:javascript;toolbal:false;\">function listPrimesInRangeResponsively(start) {\n  let next = start + 100,000;\n\n  if (next &gt; end) {\n    next = end;\n  }\n\n  for (let num = start; num  {\n          listPrimesInRangeResponsively(next + 1);\n        });\n      }\n    }\n\n    if (num == end) {\n      percentage = ((num - begin) * 100) \/ (end - begin);\n      percentage = Math.floor(percentage);\n\n      progress.innerText = `Progress ${percentage}%`;\n\n      heading.innerText = `${primeNumbers.length - 1} Primes Found!`;\n\n      console.log(primeNumbers);\n\n      return primeNumbers;\n    }\n  }\n}\n<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u4e00\u6b21\uff0c\u6211\u4eec\u7684\u51fd\u6570\u4ec5\u5728\u6279\u91cf\u5904\u7406\u8303\u56f4\u65f6\u5c1d\u8bd5\u67e5\u627e\u7d20\u6570\u3002\u5b83\u901a\u8fc7\u904d\u5386\u6240\u6709\u6570\u5b57\u4f46\u4e00\u6b21\u4ec5\u5904\u7406\u5176\u4e2d\u7684 100,000 \u4e2a\u6765\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002\u4e4b\u540e\uff0c\u5b83\u4f7f\u7528 setTimeout() \u89e6\u53d1\u5bf9\u540c\u4e00\u51fd\u6570\u7684\u4e0b\u4e00\u6b21\u8c03\u7528\u3002<\/p>\n
<\/span> \u5f53 setTimeout() \u88ab\u8c03\u7528\u800c\u6ca1\u6709\u6307\u5b9a\u5ef6\u8fdf\u65f6\uff0c\u5b83\u4f1a\u7acb\u5373\u5c06\u56de\u8c03\u51fd\u6570\u6dfb\u52a0\u5230\u4e8b\u4ef6\u961f\u5217\u4e2d\u3002 <\/p>\n
\u4e0b\u4e00\u4e2a\u8c03\u7528\u5c06\u88ab\u653e\u5165\u961f\u5217\u4e2d\uff0c\u6682\u65f6\u6e05\u7a7a\u5806\u6808\u4ee5\u5904\u7406\u4efb\u4f55\u5176\u4ed6\u4efb\u52a1\u3002\u4e4b\u540e\uff0cJavaScript \u5f15\u64ce\u5f00\u59cb\u5728\u4e0b\u4e00\u6279 100,000 \u4e2a\u6570\u5b57\u4e2d\u67e5\u627e\u7d20\u6570\u3002<\/p>\n
\u5c1d\u8bd5\u5355\u51fb\u6b64\u9875\u9762\u4e0a\u7684\u8ba1\u7b97\uff08\u5361\u4f4f\uff09<\/strong>\u6309\u94ae\uff0c\u60a8\u53ef\u80fd\u4f1a\u6536\u5230\u4e00\u6761\u6d88\u606f\uff0c\u6307\u51fa\u8be5\u7f51\u9875\u6b63\u5728\u51cf\u6162\u60a8\u7684\u6d4f\u89c8\u5668\u901f\u5ea6\uff0c\u5e76\u5efa\u8bae\u60a8\u505c\u6b62\u8be5\u811a\u672c\u3002 p> <\/p>\n<\/p>\n
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