{"id":43800,"date":"2023-12-11T15:00:55","date_gmt":"2023-12-11T07:00:55","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=43800"},"modified":"2023-12-11T15:00:55","modified_gmt":"2023-12-11T07:00:55","slug":"%e8%af%b4%e4%b8%80%e4%b8%8b%e7%b1%bb%e7%9a%84%e5%88%9b%e5%bb%ba%e5%92%8c%e7%bb%a7%e6%89%bf-2","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/11\/%e8%af%b4%e4%b8%80%e4%b8%8b%e7%b1%bb%e7%9a%84%e5%88%9b%e5%bb%ba%e5%92%8c%e7%bb%a7%e6%89%bf-2\/","title":{"rendered":"\u8bf4\u4e00\u4e0b\u7c7b\u7684\u521b\u5efa\u548c\u7ee7\u627f?"},"content":{"rendered":"

“`” \u53c2\u8003\u56de\u7b54\uff1a<\/p>\n

\uff081\uff09\u7c7b\u7684\u521b\u5efa\uff08es5\uff09\uff1anew\u4e00\u4e2afunction\uff0c\u5728\u8fd9\u4e2afunction\u7684prototype\u91cc\u9762\u589e\u52a0\u5c5e\u6027\u548c\u65b9\u6cd5\u3002<\/p>\n

\u4e0b\u9762\u6765\u521b\u5efa\u4e00\u4e2aAnimal\u7c7b\uff1a<\/p>\n

<pre><code>\/\/ \u5b9a\u4e49\u4e00\u4e2a\u52a8\u7269\u7c7b
\nfunction Animal (name) {
\n\/\/ \u5c5e\u6027
\nthis.name = name || 'Animal';
\n\/\/ \u5b9e\u4f8b\u65b9\u6cd5
\nthis.sleep = function(){
\nconsole.log(this.name + '\u6b63\u5728\u7761\u89c9\uff01');
\n}
\n}<\/p>\n

\/\/ \u539f\u578b\u65b9\u6cd5
\nAnimal.prototype.eat = function(food) {
\nconsole.log(this.name + '\u6b63\u5728\u5403\uff1a' + food);
\n};
\n<\/code><\/pre><\/p>\n

\u8fd9\u6837\u5c31\u751f\u6210\u4e86\u4e00\u4e2aAnimal\u7c7b\uff0c\u5b9e\u529b\u5316\u751f\u6210\u5bf9\u8c61\u540e\uff0c\u6709\u65b9\u6cd5\u548c\u5c5e\u6027\u3002<\/p>\n

\uff082\uff09\u7c7b\u7684\u7ee7\u627f\u2014\u2014\u539f\u578b\u94fe\u7ee7\u627f<\/p>\n

–\u539f\u578b\u94fe\u7ee7\u627f<\/p>\n

<pre><code class=""language-javascript"" lang=""javascript"">function Cat(){ }
\nCat.prototype = new Animal();
\nCat.prototype.name = 'cat';
\n\/\/\u3000Test Code
\nvar cat = new Cat();
\nconsole.log(cat.name);
\nconsole.log(cat.eat('fish'));
\nconsole.log(cat.sleep());
\nconsole.log(cat instanceof Animal); \/\/true
\nconsole.log(cat instanceof Cat); \/\/true
\n<\/code><\/pre><\/p>\n

\u4ecb\u7ecd\uff1a\u5728\u8fd9\u91cc\u6211\u4eec\u53ef\u4ee5\u770b\u5230new\u4e86\u4e00\u4e2a\u7a7a\u5bf9\u8c61,\u8fd9\u4e2a\u7a7a\u5bf9\u8c61\u6307\u5411Animal\u5e76\u4e14Cat.prototype\u6307\u5411\u4e86\u8fd9\u4e2a\u7a7a\u5bf9\u8c61\uff0c\u8fd9\u79cd\u5c31\u662f\u57fa\u4e8e\u539f\u578b\u94fe\u7684\u7ee7\u627f\u3002<\/p>\n

\u7279\u70b9\uff1a\u57fa\u4e8e\u539f\u578b\u94fe\uff0c\u65e2\u662f\u7236\u7c7b\u7684\u5b9e\u4f8b\uff0c\u4e5f\u662f\u5b50\u7c7b\u7684\u5b9e\u4f8b<\/p>\n

\u7f3a\u70b9\uff1a\u65e0\u6cd5\u5b9e\u73b0\u591a\u7ee7\u627f<\/p>\n

\uff083\uff09\u6784\u9020\u7ee7\u627f\uff1a\u4f7f\u7528\u7236\u7c7b\u7684\u6784\u9020\u51fd\u6570\u6765\u589e\u5f3a\u5b50\u7c7b\u5b9e\u4f8b\uff0c\u7b49\u4e8e\u662f\u590d\u5236\u7236\u7c7b\u7684\u5b9e\u4f8b\u5c5e\u6027\u7ed9\u5b50\u7c7b\uff08\u6ca1\u7528\u5230\u539f\u578b\uff09<\/p>\n

<pre><code class=""language-javascript"" lang=""javascript"">function Cat(name){
\nAnimal.call(this);
\nthis.name = name || 'Tom';
\n}
\n\/\/ Test Code
\nvar cat = new Cat();
\nconsole.log(cat.name);
\nconsole.log(cat.sleep());
\nconsole.log(cat instanceof Animal); \/\/ false
\nconsole.log(cat instanceof Cat); \/\/ true
\n<\/code><\/pre><\/p>\n

\u7279\u70b9\uff1a\u53ef\u4ee5\u5b9e\u73b0\u591a\u7ee7\u627f<\/p>\n

\u7f3a\u70b9\uff1a\u53ea\u80fd\u7ee7\u627f\u7236\u7c7b\u5b9e\u4f8b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u4e0d\u80fd\u7ee7\u627f\u539f\u578b\u4e0a\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002<\/p>\n

\uff084\uff09\u5b9e\u4f8b\u7ee7\u627f\u548c\u62f7\u8d1d\u7ee7\u627f<\/p>\n

\u5b9e\u4f8b\u7ee7\u627f\uff1a\u4e3a\u7236\u7c7b\u5b9e\u4f8b\u6dfb\u52a0\u65b0\u7279\u6027\uff0c\u4f5c\u4e3a\u5b50\u7c7b\u5b9e\u4f8b\u8fd4\u56de<\/p>\n

\u62f7\u8d1d\u7ee7\u627f\uff1a\u62f7\u8d1d\u7236\u7c7b\u5143\u7d20\u4e0a\u7684\u5c5e\u6027\u548c\u65b9\u6cd5<\/p>\n

\u4e0a\u8ff0\u4e24\u4e2a\u5b9e\u7528\u6027\u4e0d\u5f3a\uff0c\u4e0d\u4e00\u4e00\u4e3e\u4f8b\u3002<\/p>\n

\uff085\uff09\u7ec4\u5408\u7ee7\u627f\uff1a\u76f8\u5f53\u4e8e\u6784\u9020\u7ee7\u627f\u548c\u539f\u578b\u94fe\u7ee7\u627f\u7684\u7ec4\u5408\u4f53\u3002\u901a\u8fc7\u8c03\u7528\u7236\u7c7b\u6784\u9020\uff0c\u7ee7\u627f\u7236\u7c7b\u7684\u5c5e\u6027\u5e76\u4fdd\u7559\u4f20\u53c2\u7684\u4f18\u70b9\uff0c\u7136\u540e\u901a\u8fc7\u5c06\u7236\u7c7b\u5b9e\u4f8b\u4f5c\u4e3a\u5b50\u7c7b\u539f\u578b\uff0c\u5b9e\u73b0\u51fd\u6570\u590d\u7528<\/p>\n

<pre><code class=""language-javascript"" lang=""javascript"">function Cat(name){
\nAnimal.call(this);
\nthis.name = name || 'Tom';
\n}
\nCat.prototype = new Animal();
\nCat.prototype.constructor = Cat;
\n\/\/ Test Code
\nvar cat = new Cat();
\nconsole.log(cat.name);
\nconsole.log(cat.sleep());
\nconsole.log(cat instanceof Animal); \/\/ true
\nconsole.log(cat instanceof Cat); \/\/ true
\n<\/code><\/pre><\/p>\n

\u7279\u70b9\uff1a\u53ef\u4ee5\u7ee7\u627f\u5b9e\u4f8b\u5c5e\u6027\/\u65b9\u6cd5\uff0c\u4e5f\u53ef\u4ee5\u7ee7\u627f\u539f\u578b\u5c5e\u6027\/\u65b9\u6cd5<\/p>\n

\u7f3a\u70b9\uff1a\u8c03\u7528\u4e86\u4e24\u6b21\u7236\u7c7b\u6784\u9020\u51fd\u6570\uff0c\u751f\u6210\u4e86\u4e24\u4efd\u5b9e\u4f8b<\/p>\n

\uff086\uff09\u5bc4\u751f\u7ec4\u5408\u7ee7\u627f\uff1a\u901a\u8fc7\u5bc4\u751f\u65b9\u5f0f\uff0c\u780d\u6389\u7236\u7c7b\u7684\u5b9e\u4f8b\u5c5e\u6027\uff0c\u8fd9\u6837\uff0c\u5728\u8c03\u7528\u4e24\u6b21\u7236\u7c7b\u7684\u6784\u9020\u7684\u65f6\u5019\uff0c\u5c31\u4e0d\u4f1a\u521d\u59cb\u5316\u4e24\u6b21\u5b9e\u4f8b\u65b9\u6cd5\/\u5c5e\u6027<\/p>\n

<pre><code class=""language-javascript"" lang=""javascript"">function Cat(name){
\nAnimal.call(this);
\nthis.name = name || 'Tom';
\n}
\n(function(){
\n \/\/ \u521b\u5efa\u4e00\u4e2a\u6ca1\u6709\u5b9e\u4f8b\u65b9\u6cd5\u7684\u7c7b
\n var Super = function(){};
\n Super.prototype = Animal.prototype;
\n \/\/\u5c06\u5b9e\u4f8b\u4f5c\u4e3a\u5b50\u7c7b\u7684\u539f\u578b<\/p>\n

Cat.prototype = new Super();
\n})();
\n \/\/ Test Code
\n var cat = new Cat();
\n console.log(cat.name);
\n console.log(cat.sleep());
\n console.log(cat instanceof Animal); \/\/ true
\n console.log(cat instanceof Cat); \/\/true<\/p>\n

<\/code><\/pre><\/p>\n

\u8f83\u4e3a\u63a8\u8350<\/p>\n

<pre><code> "“`
\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"

“`” \u53c2\u8003\u56de\u7b54\uff1a \uff081\uff09\u7c7b\u7684\u521b\u5efa\uff08es5\uff09\uff1anew\u4e00\u4e2afunction\uff0c\u5728\u8fd9\u4e2afun […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-43800","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/43800","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=43800"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/43800\/revisions"}],"predecessor-version":[{"id":43801,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/43800\/revisions\/43801"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=43800"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=43800"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=43800"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}