\u4eca\u5929\u6211\u4eec\u6765\u804a\u804a JavaScript \u4e2d\u90a3\u4e2a\u65e2\u719f\u6089\u53c8\u795e\u79d8\u7684\u00a0new\u00a0\u64cd\u4f5c\u7b26\u3002\u76f8\u4fe1\u5f88\u591a\u5c0f\u4f19\u4f34\u5728\u9762\u8bd5\u65f6\u90fd\u7ecf\u5386\u8fc7\u8fd9\u6837\u7684\u201c\u540d\u573a\u9762\u201d：\u9762\u8bd5\u5b98\u5fae\u5fae\u4e00\u7b11，\u63a8\u8fc7\u6765\u90a3\u4e2a\u719f\u6089\u7684\u952e\u76d8：\u201c\u6765，\u80fd\u4e0d\u80fd\u624b\u5199\u4e00\u4e2a\u00a0new\u00a0\u7684\u5b9e\u73b0？\u201d<\/p>\n
\u8fd9\u65f6\u5019，\u5982\u679c\u4f60\u53ea\u662f\u80cc\u8bf5\u4e86\u4ee3\u7801，\u7a0d\u5fae\u95ee\u6df1\u4e00\u70b9\u53ef\u80fd\u5c31\u9732\u602f\u4e86\u3002\u4eca\u5929，\u6211\u4eec\u5c31\u628a\u8fd9\u4e2a\u201c\u9ed1\u76d2\u201d\u62c6\u5f00，\u4ece\u5e95\u5c42\u539f\u7406\u5230\u5b8c\u7f8e\u5b9e\u73b0，\u5f7b\u5e95\u641e\u61c2\u5b83！<\/p>\n
\u6211\u4eec\u5728\u65e5\u5e38\u5f00\u53d1\u4e2d，const person = new Person('Fog', 18)\u00a0\u5199\u5f97\u98de\u8d77\u3002\u4f46\u00a0new\u00a0\u80cc\u540e\u5230\u5e95\u53d1\u751f\u4e86\u4ec0\u4e48？<\/p>\n
\u7b80\u5355\u6765\u8bf4，new\u00a0\u5c31\u662f\u4e00\u4e2a**\u201c\u751f\u4ea7\u8f66\u95f4\u201d**\u3002\u5b83\u62ff\u7740\u4f60\u7684\u56fe\u7eb8（\u6784\u9020\u51fd\u6570），\u7ed9\u4f60\u9020\u51fa\u4e00\u4e2a\u5b9e\u5b9e\u5728\u5728\u7684\u4ea7\u54c1（\u5b9e\u4f8b\u5bf9\u8c61）\u3002<\/p>\n
\u8fd9\u4e2a\u8fc7\u7a0b，\u6807\u51c6\u6d41\u7a0b\u53ea\u6709\u56db\u6b65（\u6838\u5fc3\u56db\u6b65\u6cd5）：<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260203100445-6981c83dddf8a.png\")
<\/p>\n
\u9762\u8bd5\u5b98\u8ba9\u4f60\u624b\u5199\u00a0new，\u7edd\u5bf9\u4e0d\u662f\u4e3a\u4e86\u770b\u4f60\u9ed8\u5199\u4ee3\u7801\u3002\u901a\u8fc7\u8fd9\u5be5\u5be5\u51e0\u884c\u4ee3\u7801，\u4ed6\u5728\u8003\u5bdf\u4f60\u4ee5\u4e0b\u56db\u5927\u5185\u529f：<\/p>\n
\u63a5\u4e0b\u6765，\u6211\u4eec\u7531\u6d45\u5165\u6df1，\u6f14\u793a\u4e09\u4e2a\u7248\u672c\u7684\u5b9e\u73b0\u3002<\/p>\n
\u8fd9\u662f\u6700\u57fa\u7840\u7684\u5199\u6cd5，\u4e5f\u662f\u5f88\u591a\u8001\u6559\u6750\u91cc\u7684\u6807\u51c6\u7b54\u6848\u3002\u6211\u4eec\u9700\u8981\u5904\u7406\u00a0arguments\u00a0\u8fd9\u4e2a\u201c\u4f2a\u6570\u7ec4\u201d\u3002<\/p>\n
JavaScript<\/p>\n
function Person(name, age) {
\n this.name = name;
\n this.age = age;
\n}
\nPerson.prototype.sayName = function () {
\n console.log(this.name);
\n}<\/p>\n
\/\/ \u6838\u5fc3\u5b9e\u73b0
\nfunction objectFactory() {
\n \/\/ 1. \u521b\u5efa\u4e00\u4e2a\u7a7a\u5bf9\u8c61
\n var obj = new Object();<\/p>\n
\/\/ 2. \u83b7\u53d6\u6784\u9020\u51fd\u6570
\n \/\/ arguments \u662f\u7c7b\u6570\u7ec4，\u6ca1\u6709 shift \u65b9\u6cd5，\u6211\u4eec\u501f\u7528\u6570\u7ec4\u539f\u578b\u7684 shift
\n \/\/ \u8fd9\u884c\u4ee3\u7801\u6709\u4e24\u4e2a\u4f5c\u7528：\u53d6\u51fa\u7b2c\u4e00\u4e2a\u53c2\u6570(Constructor)，\u540c\u65f6 arguments \u91cc\u5269\u4e0b\u7684\u5c31\u662f\u53c2\u6570\u4e86
\n var Constructor = [].shift.call(arguments);<\/p>\n
\/\/ 3. \u94fe\u63a5\u539f\u578b：\u8ba9 obj \u80fd\u8bbf\u95ee Person.prototype \u4e0a\u7684\u5c5e\u6027
\n obj.__proto__ = Constructor.prototype;<\/p>\n
\/\/ 4. \u7ed1\u5b9a this \u5e76\u6267\u884c
\n \/\/ \u4f7f\u7528 apply \u5c06 remaining arguments \u4f20\u8fdb\u53bb
\n var result = Constructor.apply(obj, arguments);<\/p>\n
\/\/ 5. \u8fd4\u56de\u503c\u5904\u7406
\n \/\/ \u8fd9\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u7b80\u6613\u5224\u65ad，\u4f46\u5176\u5b9e\u6709\u6f0f\u6d1e（\u7a0d\u540e\u5728\u738b\u8005\u7248\u63ed\u6653）
\n return typeof result === 'object' && result !== null ? result : obj;
\n}<\/p>\n
\/\/ \u6d4b\u8bd5
\nvar awei = objectFactory(Person, '\u963f\u4f1f', 20);
\nconsole.log(awei.name); \/\/ \u963f\u4f1f
\nawei.sayName(); \/\/ \u963f\u4f1f<\/p>\n
\u91cd\u70b9\u89e3\u6790：<\/p>\n
\u65f6\u4ee3\u53d8\u4e86，\u6211\u4eec\u6709\u4e86\u66f4\u4f18\u96c5\u7684\u8bed\u6cd5\u7cd6\u3002proto\u00a0\u867d\u7136\u597d\u7528，\u4f46\u5728\u751f\u4ea7\u73af\u5883\u4e2d\u88ab\u89c6\u4e3a\u975e\u6807\u51c6（\u5c3d\u7ba1\u6d4f\u89c8\u5668\u652f\u6301），\u6027\u80fd\u4e5f\u4e0d\u5982\u00a0Object.create\u3002<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260203100446-6981c83e4e3fb.png\")
<\/p>\n
JavaScript<\/p>\n
\/\/ \u4f7f\u7528 …args \u5269\u4f59\u53c2\u6570，\u544a\u522b arguments
\nfunction objectFactory(Constructor, …args) {
\n \/\/ 1. & 2. \u521b\u5efa\u5bf9\u8c61\u5e76\u76f4\u63a5\u94fe\u63a5\u539f\u578b
\n \/\/ Object.create(proto) \u521b\u5efa\u4e00\u4e2a\u65b0\u5bf9\u8c61，\u5e26\u7740\u6307\u5b9a\u7684\u539f\u578b，\u6027\u80fd\u66f4\u597d，\u66f4\u7b26\u5408\u89c4\u8303
\n const obj = Object.create(Constructor.prototype);<\/p>\n
\/\/ 3. \u6267\u884c\u6784\u9020\u51fd\u6570
\n const result = Constructor.apply(obj, args);<\/p>\n
\/\/ 4. \u8fd4\u56de\u503c\u5904\u7406 (\u4f9d\u7136\u6cbf\u7528\u65e7\u903b\u8f91)
\n return typeof result === 'object' && result !== null ? result : obj;
\n}<\/p>\n
\u91cd\u70b9\u89e3\u6790：<\/p>\n
\u6ce8\u610f\u4e86！\u5982\u679c\u4f60\u80fd\u5199\u51fa\u8fd9\u4e2a\u7248\u672c，\u9762\u8bd5\u5b98\u7edd\u5bf9\u4f1a\u5bf9\u4f60\u522e\u76ee\u76f8\u770b\u3002<\/p>\n
\u5728 V1 \u548c V2 \u4e2d，\u6211\u4eec\u5bf9\u8fd4\u56de\u503c\u7684\u5224\u65ad\u662f\u00a0typeof result === 'object'\u3002\u8fd9\u6709\u4e00\u4e2a\u5de8\u5927\u7684\u9690\u5f62\u6f0f\u6d1e： \u5982\u679c\u6784\u9020\u51fd\u6570\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u00a0function\u00a0\u5462？<\/p>\n
\u5728 JS \u539f\u751f\u00a0new\u00a0\u4e2d，\u5982\u679c\u6784\u9020\u51fd\u6570\u8fd4\u56de\u51fd\u6570，new\u00a0\u8868\u8fbe\u5f0f\u7684\u7ed3\u679c\u5c31\u662f\u90a3\u4e2a\u51fd\u6570\u3002\u4f46\u00a0typeof function\u00a0\u662f\u00a0'function'\u00a0\u800c\u4e0d\u662f\u00a0'object'，\u4e4b\u524d\u7684\u4ee3\u7801\u4f1a\u9519\u8bef\u5730\u8fd4\u56de\u00a0obj\u00a0\u5b9e\u4f8b\u3002<\/p>\n
JavaScript<\/p>\n
function objectFactory(Constructor, …args) {
\n \/\/ 0. \u53c2\u6570\u6821\u9a8c (\u4e25\u8c28\u6027\u52a0\u5206\u9879)
\n if (typeof Constructor !== 'function') {
\n throw new TypeError('Constructor must be a function');
\n }<\/p>\n
\/\/ 1. \u521b\u5efa\u5bf9\u8c61，\u94fe\u63a5\u539f\u578b
\n const obj = Object.create(Constructor.prototype);<\/p>\n
\/\/ 2. \u7ed1\u5b9a this \u6267\u884c
\n const result = Constructor.apply(obj, args);<\/p>\n
\/\/ 3. \u5b8c\u7f8e\u7684\u8fd4\u56de\u503c\u5904\u7406（\u5173\u952e\u4fee\u6b63！）
\n \/\/ \u5982\u679c result \u662f\u5bf9\u8c61(\u975enull) \u6216\u8005 \u662f\u51fd\u6570，\u5219\u8fd4\u56de result
\n \/\/ \u5426\u5219\u8fd4\u56de\u65b0\u521b\u5efa\u7684 obj
\n const isObject = typeof result === 'object' && result !== null;
\n const isFunction = typeof result === 'function';<\/p>\n
return (isObject || isFunction) ? result : obj;
\n}<\/p>\n
\/\/ \u9a8c\u8bc1\u7279\u6b8a\u60c5\u51b5
\nfunction Factory() {
\n return function() { console.log('I am a function'); };
\n}
\nconst test = objectFactory(Factory);
\nconsole.log(typeof test); \/\/ "function" \u2014\u2014 \u903b\u8f91\u6b63\u786e！<\/p>\n
\u4f60\u770b，\u6240\u8c13\u7684\u201c\u624b\u5199\u6e90\u7801\u201d，\u5176\u5b9e\u5c31\u662f\u5bf9\u57fa\u7840\u77e5\u8bc6\u7684\u6392\u5217\u7ec4\u5408\u3002<\/p>\n
\u638c\u63e1\u4e86\u8fd9\u4e09\u70b9，new\u00a0\u64cd\u4f5c\u7b26\u5bf9\u4f60\u6765\u8bf4\u5c31\u4e0d\u518d\u662f\u9ed1\u76d2\u3002\u4e0b\u6b21\u9762\u8bd5\u9047\u5230，\u76f4\u63a5\u5c55\u793a\u201c\u738b\u8005\u7248\u201d，\u544a\u8bc9\u9762\u8bd5\u5b98：\u6211\u4e0d\u6b62\u4f1a\u5199，\u6211\u8fd8\u77e5\u9053\u4e3a\u4ec0\u4e48\u8981\u8fd9\u4e48\u5199\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4eca\u5929\u6211\u4eec\u6765\u804a\u804a JavaScript \u4e2d\u90a3\u4e2a\u65e2\u719f\u6089\u53c8\u795e\u79d8\u7684\u00a0new\u00a0\u64cd\u4f5c\u7b26\u3002\u76f8\u4fe1\u5f88\u591a\u5c0f\u4f19\u4f34\u5728\u9762\u8bd5\u65f6\u90fd\u7ecf\u5386\u8fc7\u8fd9\u6837\u7684\u201c\u540d\u573a\u9762\u201d：\u9762\u8bd5\u5b98\u5fae\u5fae\u4e00\u7b11，\u63a8\u8fc7\u6765\u90a3\u4e2a\u719f\u6089\u7684\u952e\u76d8：\u201c\u6765，\u80fd\u4e0d\u80fd\u624b\u5199\u4e00\u4e2a\u00a0new\u00a0\u7684\u5b9e\u73b0？\u201d
\n\u8fd9\u65f6\u5019，\u5982\u679c\u4f60\u53ea\u662f\u80cc\u8bf5\u4e86\u4ee3\u7801，\u7a0d\u5fae\u95ee\u6df1\u4e00\u70b9\u53ef\u80fd\u5c31\u9732\u602f\u4e86\u3002\u4eca\u5929，\u6211\u4eec\u5c31\u628a\u8fd9\u4e2a\u201c\u9ed1\u76d2\u201d\u62c6\u5f00，\u4ece\u5e95\u5c42\u539f\u7406\u5230\u5b8c\u7f8e\u5b9e\u73b0，\u5f7b\u5e95\u641e\u61c2\u5b83！<\/p>\n","protected":false},"author":2,"featured_media":71393,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[187,594,87,371,176],"topic":[],"class_list":["post-71395","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-javascript","tag-web","tag-87","tag-371","tag-176"],"yoast_head":"\n