{"id":3000,"date":"2020-07-31T13:42:58","date_gmt":"2020-07-31T05:42:58","guid":{"rendered":"http:\/\/www.yuguoxy.com\/geekhome\/?p=3000"},"modified":"2020-07-31T13:42:58","modified_gmt":"2020-07-31T05:42:58","slug":"%e5%9b%9e%e7%ad%94%e4%b8%80%e4%b8%8b%e8%bf%99-10-%e4%b8%aa%e6%9c%80%e5%b8%b8%e8%a7%81%e7%9a%84-javascript-%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=3000","title":{"rendered":"\u56de\u7b54\u4e00\u4e0b\u8fd9 10 \u4e2a\u6700\u5e38\u89c1\u7684 Javascript \u95ee\u9898"},"content":{"rendered":"<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u6536\u96c6\u4e86\u5173\u4e8eJavascript \u6700\u5e38\u88ab\u95ee\u5230\u7684 10 \u4e2a\u95ee\u9898\u53ca\u5176\u7b54\u6848\u3002<\/p>\n<p>\u8fd910 \u4e2a\u95ee\u9898\u5927\u591a\u6d89\u53ca Javascript \u7684\u57fa\u7840\u77e5\u8bc6\uff0c\u6240\u4ee5\u5982\u679c\u4f60\u521a\u521a\u5f00\u59cb\u5b66\u4e60 JS\uff0c\u6700\u597d\u7406\u89e3\u5e76\u638c\u63e1\u5b83\u4eec\u5e76\u3002<\/p>\n<p>\u8fd9\u4e2a 10 \u95ee\u9898\u6d89\u53ca JS \u4e2d<strong>\u95ed\u5305<\/strong>\u3001<strong>promise<\/strong>\uff0c<strong>\u53d8\u91cf\u63d0\u5347<\/strong>\u3001<strong>\u7c7b<\/strong>\u7b49\u7b49\u3002\u5c3d\u7ba1\u8fd9\u4e9b\u77e5\u8bc6\u4e0d\u662f\u5f88\u96be\uff0c\u4f46\u662f\u77e5\u9053\u7b54\u6848\u662f\u4e00\u4ef6\u597d\u4e8b\uff0c\u56e0\u4e3a\u5176\u4e2d\u4e00\u4e9b\u7ecf\u5e38\u5728\u9762\u8bd5\u4e2d\u4f1a\u88ab\u95ee\u5230\u3002<\/p>\n<h2>Javascript \u4e2d\u7684\u95ed\u5305\u662f\u4ec0\u4e48\uff1f<\/h2>\n<p>\u95ed\u5305\u662f\u5c01\u95ed\u5728\u4e00\u8d77\u7684\u51fd\u6570\u7684\u7ec4\u5408\uff0c\u5176\u4e2d\u5185\u90e8\u51fd\u6570\u53ef\u4ee5\u8bbf\u95ee\u5176\u53d8\u91cf\u548c\u5916\u90e8\u51fd\u6570\u7684\u53d8\u91cf\u3002<\/p>\n<p>\u6700\u7b80\u5355\u7684\u89e3\u91ca\u65b9\u6cd5\u5c31\u662f\u4e0a\u4f8b\u5b50\uff1a<\/p>\n<pre><code class=\"language-javascript\" lang=\"javascript\">function outer() {\r\n  var name = 'Maria';\r\n  function inner() {\r\n    console.log(name);\r\n  }\r\n  inner();\r\n}\r\nouter();\r\n\/\/ 'Maria'\r\n<\/code><\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u4f60\u53ef\u4ee5\u770b\u5230<code>inner()<\/code>\u51fd\u6570\u53ef\u4ee5\u8bbf\u95ee\u5176\u7236\u51fd\u6570\u53d8\u91cf<code>name<\/code>\u3002\u56e0\u6b64\uff0c\u5982\u679c\u8c03\u7528<code>outer()<\/code>\u51fd\u6570\uff0c\u90a3\u4e48<code>inner()<\/code>\u51fd\u6570\u7684<code>console.log()<\/code>\u5c06\u8fd4\u56de<code>name<\/code>\u7684\u503c<code>Maria<\/code>\u3002<\/p>\n<p>\u5185\u90e8\u51fd\u6570\u53ef\u4ee5\u8bbf\u95ee\u5916\u90e8\u51fd\u6570\u53c2\u6570\u5bf9\u8c61\uff0c\u4f46\u662f\u5185\u90e8\u51fd\u6570\u53c2\u6570\u4e0e\u5916\u90e8\u4e00\u6837\uff0c\u5219\u5185\u90e8\u7684\u53c2\u6570\u5bf9\u8c61\u4f1a\u8986\u76d6\u5916\u90e8\u7684\u53c2\u6570\u5bf9\u8c61\u3002\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre><code class=\"language-javascript\" lang=\"javascript\">function outer(a, b) {\r\n  const inner = (a, b) =&gt; console.log(a, b);\r\n  inner(1, 2);\r\n}\r\nouter('Alice', 'Mark');\r\n\/\/ returns 1, 2\r\n<\/code><\/pre>\n<p>\u6211\u4eec\u4f7f\u7528\u95ed\u5305\u7684\u4e3b\u8981\u539f\u56e0\u662f\u8fd4\u56de\u53ef\u4ee5\u8fd4\u56de\u5176\u4ed6\u51fd\u6570\u7684\u51fd\u6570\u3002<\/p>\n<h2>Javascript\u4e2d\u7684 DOM \u662f\u4ec0\u4e48<\/h2>\n<p>DOM \u662f\u6587\u6863\u5bf9\u8c61\u6a21\u578b\uff0c\u5b83\u662f\u7f51\u7ad9\u7684\u9762\u5411\u5bf9\u8c61\u7684\u8868\u793a\u5f62\uff0c\u53ef\u4ee5\u4f7f\u7528 Javascript \u8fdb\u884c\u4fee\u6539\u3002<\/p>\n<p>\u4f7f\u7528 JS \u53ef\u4ee5\u64cd\u7eb5 DOM \u5143\u7d20\uff0c\u4f8b\u5982\u989c\u8272\uff0c\u4f4d\u7f6e\uff0c\u5927\u5c0f\u3002\u4e3a\u4e86\u9009\u62e9\u9875\u9762\u7684\u7279\u5b9a\u5143\u7d20\uff0cJavascript \u63d0\u4f9b\u4e86\u4e00\u4e9b\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li><strong>getElementById()<\/strong> &#8211; \u901a\u8fc7<code>id<\/code>\u5c5e\u6027\u9009\u62e9\u4e00\u4e2a\u5143\u7d20<\/li>\n<li><strong>getElementsByName()<\/strong> &#8211; \u901a\u8fc7<code>name<\/code>\u5c5e\u6027\u9009\u62e9\u4e00\u4e2a\u5143\u7d20<\/li>\n<li><strong>getElementsByTagName()<\/strong> &#8211; \u9009\u62e9\u6240\u9009\u6807\u7b7e\u7684\u6240\u6709\u5143\u7d20\uff0c<\/li>\n<li><strong>getElementsbyClassName()<\/strong> &#8211; \u9009\u62e9\u7279\u5b9a\u7c7b\u540d\u7684\u6240\u6709\u5143\u7d20<\/li>\n<\/ul>\n<p>*\u3000<strong>querySelector()<\/strong>\u3000-\u3000\u901a\u8fc7CSS\u9009\u62e9\u5668\u9009\u62e9\u5143\u7d20\u3002<\/p>\n<p>Javascript\u3000\u8fd8\u63d0\u4f9b\u4e86\u5176\u4ed6\u64cd\u4f5c\u5143\u7d20\u7684\u65b9\u6cd5\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u83b7\u53d6\u5143\u7d20\uff0c\u6bd4\u5982<code>appendChild()<\/code>\u6216<code>innerHTML()<\/code>\u3002<\/p>\n<h2>Javascript \u7684 Promise \u662f\u4ec0\u4e48<\/h2>\n<p>Promise \u662f\u5f02\u6b65\u7f16\u7a0b\u7684\u4e00\u79cd\u89e3\u51b3\u65b9\u6848\uff0c\u53ef\u4ee5\u66ff\u4ee3\u4f20\u7edf\u7684\u89e3\u51b3\u65b9\u6848&#8211;\u56de\u8c03\u51fd\u6570\u548c\u4e8b\u4ef6\u3002ES6\u7edf\u4e00\u4e86\u7528\u6cd5\uff0c\u5e76\u539f\u751f\u63d0\u4f9b\u4e86<code>Promise<\/code>\u5bf9\u8c61\u3002\u4f5c\u4e3a\u5bf9\u8c61\uff0cPromise \u6709\u4e00\u4e0b\u4e24\u4e2a\u7279\u70b9\uff1a* \uff081\uff09\u5bf9\u8c61\u7684\u72b6\u6001\u4e0d\u53d7\u5916\u754c\u5f71\u54cd\u3002* \uff082\uff09\u4e00\u65e6\u72b6\u6001\u6539\u53d8\u4e86\u5c31\u4e0d\u4f1a\u5728\u53d8\uff0c\u4e5f\u5c31\u662f\u8bf4\u4efb\u4f55\u65f6\u5019<code>Promise<\/code> \u90fd\u53ea\u6709\u4e00\u79cd\u72b6\u6001\u3002<\/p>\n<p>Promise \u6709\u4e09\u79cd\u72b6\u6001\uff0c\u5206\u522b\u662f\uff1a<strong>Pending <\/strong>\uff08\u8fdb\u884c\u4e2d\uff09\uff0c ** Resolved <strong>(\u5df2\u5b8c\u6210)\uff0c<\/strong>Rejected ** (\u5df2\u5931\u8d25)\u3002Promise \u4ece <code>Pending<\/code> \u72b6\u6001\u5f00\u59cb\uff0c\u5982\u679c\u6210\u529f\u5c31\u8f6c\u5230\u6210\u529f\u6001\uff0c\u5e76\u6267\u884c<code>resolve<\/code>\u56de\u8c03\u51fd\u6570\uff1b\u5982\u679c\u5931\u8d25\u5c31\u8f6c\u5230\u5931\u8d25\u72b6\u6001\u5e76\u6267\u884c<code>reject<\/code>\u56de\u8c03\u51fd\u6570\u3002<\/p>\n<p>\u5982\u679c Promise \u88ab\u89e3\u6790(resolved)\uff0c\u6211\u4eec\u53ef\u4ee5\u8c03\u7528<code>then()<\/code>\u65b9\u6cd5\u5e76\u4f7f\u7528\u8fd4\u56de\u503c\u6267\u884c\u64cd\u4f5c\u3002\u5982\u679c\u88ab\u62d2\u7edd(rejected)\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<code>catch()<\/code>\u65b9\u6cd5\u6765\u5904\u7406\u9519\u8bef\u3002<\/p>\n<p>\u5904\u7406\u5f02\u6b65\u7f16\u7a0b\u7684\u5176\u4ed6\u65b9\u6cd5\u8fd8\u6709<code>async\/await<\/code>\u548c<code>callbacks<\/code>\u3002<\/p>\n<h2>Javascript \u4e2d\u7684\u539f\u578b\u662f\u4ec0\u4e48?<\/h2>\n<p>\u539f\u578b\u901a\u5e38\u6307\u7684\u662f<code>prototype<\/code>\u548c<code>__proto__<\/code>\u8fd9\u4e24\u4e2a\u539f\u578b\u5bf9\u8c61\uff0c\u5176\u4e2d\u524d\u8005\u53eb\u505a\u663e\u5f0f\u539f\u578b\u5bf9\u8c61,\u540e\u8005\u53eb\u505a\u9690\u5f0f\u539f\u578b\u5bf9\u8c61\u3002<\/p>\n<p>Javascript\u5bf9\u8c61\u4ece\u539f\u578b\u7ee7\u627f\u65b9\u6cd5\u548c\u5c5e\u6027\uff0c\u800c<code>Object.prototype<\/code>\u5728\u7ee7\u627f\u94fe\u7684\u9876\u90e8\u3002Javascript prototype\u5173\u952e\u5b57\u8fd8\u53ef\u4ee5\u7528\u4e8e\u5411\u6784\u9020\u51fd\u6570\u6dfb\u52a0\u65b0\u503c\u548c\u65b9\u6cd5\u3002<\/p>\n<p>\u6765\u770b\u770b\u4e8b\u4f8b\uff1a<\/p>\n<pre><code class=\"language-javascript\" lang=\"javascript\">function Animal(name, kind, age) {\r\n  this.name = name;\r\n  this.kind = kind;\r\n  this.age = age;\r\n}\r\n\r\nAnimal.prototype.ownerName('Mark');\r\n<\/code><\/pre>\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u901a\u8fc7\u4f7f\u7528\u539f\u578b\uff0c\u6211\u4eec\u80fd\u591f\u5c06<code>ownerName<\/code>\u5c5e\u6027\u6dfb\u52a0\u5230<code>Animal()<\/code>\u6784\u9020\u51fd\u6570\u4e2d\u3002<\/p>\n<h2>Javascript \u7684 \u53d8\u91cf\u63d0\u5347 \u662f\u4ec0\u4e48<\/h2>\n<p><strong>\u63d0\u5347<\/strong>\u662f\u4e00\u79cd\u673a\u5236\uff0c\u5b83\u5c06\u6240\u6709\u58f0\u660e\u7684\u53d8\u91cf\u548c\u51fd\u6570\u63d0\u5347\u5230\u5b83\u4eec\u5c40\u90e8\u4f5c\u7528\u57df\u7684\u9876\u90e8\uff0c\u5982\u679c\u53d8\u91cf\u548c\u51fd\u6570\u88ab\u653e\u7f6e\u5728\u5168\u5c40\u4f5c\u7528\u57df\uff0c\u5219\u4f1a\u88ab\u63d0\u5347\u5230\u5168\u5c40\u4f5c\u7528\u57df\u7684\u9876\u90e8\u3002<\/p>\n<p>Javascript\u4e2d\uff0c\u53ef\u4ee5\u5728\u53d8\u91cf\u88ab\u4f7f\u7528\u540e\u5728\u58f0\u660e\u5b83\u3002<\/p>\n<p><strong>\u63d0\u5347<\/strong>\u7528\u4e8e\u907f\u514d\u5728\u53d8\u91cf\u6216\u51fd\u6570\u6709\u5728\u6ca1\u6709\u5b9a\u4e49\u4e4b\u524d\u5c31\u6267\u884c\u5bfc\u81f4\u7684 <code>undefined<\/code> \u9519\u8bef\u3002<\/p>\n<pre><code class=\"language-javascript\" lang=\"javascript\">name = 'Ted';\r\nconsole.log(name);\r\nvar name;\r\n\/\/ 'Ted'\r\n\r\n\r\nvar name;\r\nname = 'Ted';\r\nconsole.log(name);\r\n\/\/ 'Ted';\r\n<\/code><\/pre>\n<p>\u4f7f\u7528 <code>var<\/code> \u58f0\u660e\u7684\u53d8\u91cf\uff0c\u5982\u679c\u6ca1\u6709\u8d4b\u503c\uff0c\u5219\u9ed8\u8ba4\u4f1a\u88ab\u521d\u59cb\u5316\u4e3a <code>undefined<\/code>, <code>let<\/code> \u548c <code>const<\/code>\u5219\u4e0d\u4f1a\u3002\u53e6\u5916\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5728\u58f0\u660e<code>const<\/code>\u65f6\uff0c\u5fc5\u987b\u540c\u65f6\u521d\u59cb\u5316\u5b83\uff0c\u56e0\u4e3a\u540e\u9762\u4e0d\u53ef\u5728\u66f4\u6539\u5b83\u3002<\/p>\n<h2>Javascript\u4e2d\u7684\u5bf9\u8c61\u662f\u4ec0\u4e48<\/h2>\n<p>\u5bf9\u8c61\u53ea\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u6570\u636e\u3002\u5bf9\u8c61\u62e5\u6709\u5c5e\u6027\u548c\u65b9\u6cd5\u3002JavaScript \u4e2d\u7684\u6240\u6709\u4e8b\u7269\u90fd\u662f\u5bf9\u8c61\uff0c\u5982:\u5b57\u7b26\u4e32\u3001\u6570\u503c\u3001\u6570\u7ec4\u3001\u51fd\u6570\u7b49\u3002<\/p>\n<p><strong>\u5bf9\u8c61\u7684\u5c5e\u6027<\/strong>\uff1a\u53cd\u6620\u8be5\u5bf9\u8c61\u67d0\u4e9b\u7279\u5b9a\u7684\u6027\u8d28\u7684\uff0c\u5982\uff1a\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u3001\u56fe\u50cf\u7684\u957f\u5bbd\u7b49\uff1b<\/p>\n<p><strong>\u5bf9\u8c61\u7684\u65b9\u6cd5<\/strong>\uff1a\u80fd\u591f\u5728\u5bf9\u8c61\u4e0a\u6267\u884c\u7684\u52a8\u4f5c\u3002\u4f8b\u5982\uff0c\u8868\u5355\u7684\u201c\u63d0\u4ea4\u201d(Submit)\uff0c\u65f6\u95f4\u7684\u201c\u83b7\u53d6\u201d(getYear)\u7b49\uff1b<\/p>\n<p>\u5c5e\u6027\u53ea\u662f\u7b80\u5355\u7684\u503c\uff0c\u800c\u65b9\u6cd5\u662f\u53ef\u4ee5\u5728\u5bf9\u8c61\u4e0a\u6267\u884c\u7684\u64cd\u4f5c\u3002<\/p>\n<pre><code class=\"language-javascript\" lang=\"javascript\">var student = {\r\n  firstName: 'Alice',\r\n  lastName: 'Jones',\r\n  age: 21,\r\n  sayHi: () =&gt; {\r\n    return 'Hi, I am ' + this.firstName;\r\n  }\r\n}\r\n<\/code><\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u4f60\u53ef\u4ee5\u770b\u5230<code>Student<\/code>\u5bf9\u8c61\uff0c\u5176\u4e2d\u5305\u542b\u4e09\u4e2a\u5c5e\u6027\u548c\u4e00\u4e2a\u65b9\u6cd5\u3002<\/p>\n<h2>Javascript \u4e2d\u7684\u51fd\u6570\u662f\u4ec0\u4e48<\/h2>\n<p>\u5728javascript\u4e2d\u51fd\u6570\u662f\u4e00\u6bb5\u53ef\u4ee5\u88ab\u6267\u884c\u6216\u8c03\u7528\u4efb\u610f\u6b21\u6570\u7684JavasScript\u4ee3\u7801,\u5728\u6570\u636e\u7c7b\u578b\u4e2d\u5c5e\u4e8e<code>\"function\"<\/code>\u3002\u51fd\u6570\u4e5f\u62e5\u6709\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u56e0\u6b64\u51fd\u6570\u4e5f\u662f\u5bf9\u8c61\u3002<\/p>\n<p>\u5728Javascript\u4e2d\u51fd\u6570\u5b9a\u4e49\u51fd\u6570\u58f0\u660e\u6216\u51fd\u6570\u8868\u8fbe\u5f0f\u7531\u5173\u952e\u5b57<code>function<\/code>\u5f00\u59cb\u3002\u5728\u5b9a\u4e49\u51fd\u6570\u65f6\uff0c\u53ef\u4ee5\u5728\u51fd\u6570\u540d\u540e\u9762\u7684\u62ec\u53f7\u4e2d\u6dfb\u52a0\u4e00\u4e9b\u53c2\u6570\u3002\u5f53\u6211\u4eec\u8c03\u7528\u51fd\u6570\u65f6\uff0c\u62ec\u53f7\u4e2d\u4f20\u9012\u7684\u503c\u79f0\u4e3a\u53c2\u6570\u3002<\/p>\n<pre><code class=\"language-javascript\" lang=\"javascript\">function calculate(x, y) {\r\n  return x * y;\r\n}\r\n\r\ncalculate(2, 5);\r\n<\/code><\/pre>\n<h2>Javascript\u4e2d\u7684\u7eaf\u51fd\u6570\u662f\u4ec0\u4e48<\/h2>\n<p>\u5982\u679c\u51fd\u6570\u7684\u8c03\u7528\u53c2\u6570\u76f8\u540c\uff0c\u5219\u6c38\u8fdc\u8fd4\u56de\u76f8\u540c\u7684\u7ed3\u679c\u3002\u5b83\u4e0d\u4f9d\u8d56\u4e8e\u7a0b\u5e8f\u6267\u884c\u671f\u95f4\u51fd\u6570\u5916\u90e8\u4efb\u4f55\u72b6\u6001\u6216\u6570\u636e\u7684\u53d8\u5316\uff0c\u5fc5\u987b\u53ea\u4f9d\u8d56\u4e8e\u5176\u8f93\u5165\u53c2\u6570\u3002<\/p>\n<p>\u987e\u540d\u601d\u4e49\uff0c\u7eaf\u51fd\u6570\u8ddf\u6211\u4eec\u521d\u4e2d\u6570\u5b66\u7684\u57fa\u672c\u51fd\u6570\u4e00\u6837\uff0c\u9075\u5faa\u4e00\u5b9a\u7684\u6620\u5c04\u5173\u7cfb\uff0c\u8f93\u5165\u51b3\u5b9a\u8f93\u51fa\uff0c\u4e00\u4e2a\u8f93\u5165\u53ea\u80fd\u5bf9\u5e94\u4e00\u4e2a\u8f93\u51fa\u3002\u4e0d\u540c\u7684\u8f93\u5165\u53ef\u4ee5\u6709\u76f8\u540c\u7684\u8f93\u51fa\uff0c\u4f46\u662f\u76f8\u540c\u7684\u8f93\u5165\u4e0d\u80fd\u6709\u4e0d\u540c\u7684\u8f93\u51fa<\/p>\n<p>\u4e00\u4e2a\u51fd\u6570\uff0c\u5982\u679c\u7b26\u5408\u4ee5\u4e0b\u4e24\u4e2a\u7279\u70b9\uff0c\u90a3\u4e48\u5b83\u5c31\u53ef\u4ee5\u79f0\u4e4b\u4e3a \u7eaf\u51fd\u6570\uff1a<\/p>\n<ul>\n<li>\u5bf9\u4e8e\u76f8\u540c\u7684\u8f93\u5165\uff0c\u6c38\u8fdc\u5f97\u5230\u76f8\u540c\u7684\u8f93\u51fa<\/li>\n<li>\u6ca1\u6709\u4efb\u4f55\u53ef\u89c2\u5bdf\u5230\u7684\u526f\u4f5c\u7528<\/li>\n<\/ul>\n<h2>Javascript\u4e2d\u7684\u6784\u9020\u51fd\u6570\u662f\u4ec0\u4e48<\/h2>\n<p>\u6784\u9020\u51fd\u6570\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u65b9\u6cd5\uff0c\u7528\u4e8e\u521d\u59cb\u5316\u548c\u521b\u5efa Javascript <strong>\u7c7b<\/strong>\u4e2d\u7684\u5bf9\u8c61\u3002<\/p>\n<p>JavaScript \u4e2d\u7684\u6784\u9020\u51fd\u6570\u548c\u5176\u5b83\u8bed\u8a00\u4e2d\u7684\u6784\u9020\u51fd\u6570\u662f\u4e0d\u540c\u7684\u3002\u901a\u8fc7 <code>new<\/code> \u5173\u952e\u5b57\u65b9\u5f0f\u8c03\u7528\u7684\u51fd\u6570\u90fd\u88ab\u8ba4\u4e3a\u662f\u6784\u9020\u51fd\u6570\u3002<\/p>\n<p>\u5728\u6784\u9020\u51fd\u6570\u5185\u90e8\uff0c<code>this<\/code> \u6307\u5411\u65b0\u521b\u5efa\u7684\u5bf9\u8c61 Object\u3002\u8fd9\u4e2a\u65b0\u521b\u5efa\u7684\u5bf9\u8c61\u7684 <code>prototype<\/code> \u88ab\u6307\u5411\u5230\u6784\u9020\u51fd\u6570\u7684 <code>prototype<\/code>\u3002<\/p>\n<p>\u5982\u679c\u88ab\u8c03\u7528\u7684\u51fd\u6570\u6ca1\u6709\u663e\u5f0f\u7684 <code>return<\/code> \u8868\u8fbe\u5f0f\uff0c\u5219\u9690\u5f0f\u7684\u4f1a\u8fd4\u56de <code>this<\/code> \u5bf9\u8c61\uff0c\u4e5f\u5c31\u662f\u65b0\u521b\u5efa\u7684\u5bf9\u8c61\u3002<\/p>\n<pre><code class=\"language-javascript\" lang=\"javascript\">const Person = (name, age) =&gt; {\r\n  this.name = name;\r\n  this.age = age;\r\n}\r\n\r\nvar man = new Person('Mark', 23);\r\nconsole.log(man);\r\n\/\/ { name: 'Mark', age: 23 }\r\n<\/code><\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u521b\u5efa\u4e86\u4e00\u4e2a<code>Person<\/code>\u6784\u9020\u51fd\u6570\uff0c\u5728\u4e0b\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3a<code>man<\/code>\u7684\u65b0\u53d8\u91cf\uff0c\u5e76\u57fa\u4e8e<code>Person<\/code>\u6784\u9020\u51fd\u6570\u521b\u5efa\u4e86\u4e00\u4e2a\u65b0\u5bf9\u8c61\u3002<\/p>\n<h2>Javascript\u7c7b\u662f\u4ec0\u4e48\uff1f<\/h2>\n<p>\u81ea\u4ece ES6 \u5f15\u5165\u4ee5\u6765\uff0c\u6211\u4eec\u53ef\u4ee5\u5728Javascript\u4e2d\u4f7f\u7528\u7c7b\u3002\u7c7b\u662f\u4e00\u79cd\u51fd\u6570\uff0c\u6211\u4eec\u4f7f\u7528\u5173\u952e\u5b57<code>class<\/code>\u4ee3\u66ff<code>function<\/code>\u5173\u952e\u5b57\u6765\u521d\u59cb\u5316\u5b83\u3002<\/p>\n<p>\u9664\u6b64\u4e4b\u5916\uff0c\u6211\u4eec\u8fd8\u5fc5\u987b\u5728\u7c7b\u5185\u90e8\u6dfb\u52a0<code>constructor()<\/code>\u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\u5728\u6bcf\u6b21\u521d\u59cb\u5316\u7c7b\u65f6\u90fd\u4f1a\u8c03\u7528\u3002<\/p>\n<p>\u5728<code>constructor()<\/code>\u65b9\u6cd5\u5185\u90e8\uff0c\u6211\u4eec\u6dfb\u52a0\u4e86\u7c7b\u7684\u5c5e\u6027\u3002\u8981\u57fa\u4e8e\u73b0\u6709\u7684\u7c7b\u521b\u5efa\u53e6\u4e00\u4e2a\u7c7b\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<code>extends<\/code>\u5173\u952e\u5b57\u3002<\/p>\n<p>\u5728JavaScript\u4e2d\u4f7f\u7528\u7c7b\u7684\u4e00\u4e2a\u5f88\u597d\u7684\u4f8b\u5b50\u662f React \u6846\u67b6\uff0c\u5b83\u662f\u7c7b\u7684\u7ec4\u4ef6\u3002<\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u6536\u96c6\u4e86\u5f00\u53d1\u8005\u7ecf\u5e38\u95ee\u7684 10 \u4e2aJavascript\u95ee\u9898\uff0c\u5e76\u7ed9\u51fa\u7b54\u6848\uff0c\u7b54\u6848\u4e0d\u662f\u552f\u4e00\uff0c\u8fd9\u91cc\u53ea\u662f\u81ea\u5df1\u7684\u4e00\u4e9b\u89c1\u89e3\uff0c\u5e0c\u671b\u672c\u6587\u80fd\u7ed9\u521d\u59cb\u5316\u8005\u5e26\u6765\u4e00\u4e9b\u5e2e\u52a9\u3002<\/p>\n<p>\u4eba\u624d\u4eec\u7684 <strong>\u3010\u4e09\u8fde\u3011<\/strong> \u5c31\u662f\u5c0f\u667a\u4e0d\u65ad\u5206\u4eab\u7684\u6700\u5927\u52a8\u529b\uff0c\u5982\u679c\u672c\u7bc7\u535a\u5ba2\u6709\u4efb\u4f55\u9519\u8bef\u548c\u5efa\u8bae\uff0c\u6b22\u8fce\u4eba\u624d\u4eec\u7559\u8a00\uff0c\u6700\u540e\uff0c\u8c22\u8c22\u5927\u5bb6\u7684\u89c2\u770b\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u539f\u6587\uff1a<a class=\"url\" href=\"https:\/\/dev.to\/duomly\/10-most-common-javascript-questions-answered-1083\" target=\"_blank\">https:\/\/dev.to\/duomly\/10-most-common-javascript-questions-answered-1083<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u6536\u96c6\u4e86\u5173\u4e8eJavascript \u6700\u5e38\u88ab\u95ee\u5230\u7684 10 \u4e2a\u95ee\u9898\u53ca\u5176\u7b54\u6848\u3002 \u8fd910 \u4e2a\u95ee\u9898\u5927\u591a\u6d89\u53ca Ja [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[109,105],"tags":[150],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/3000"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3000"}],"version-history":[{"count":1,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/3000\/revisions"}],"predecessor-version":[{"id":3001,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/3000\/revisions\/3001"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3000"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3000"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3000"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}