{"id":12766,"date":"2023-11-28T23:05:43","date_gmt":"2023-11-28T15:05:43","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=12766"},"modified":"2023-11-29T21:49:26","modified_gmt":"2023-11-29T13:49:26","slug":"javascript-zhong-shen-me-shi-yuan-xing-yuan-xing-l","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/javascript-zhong-shen-me-shi-yuan-xing-yuan-xing-l\/","title":{"rendered":"JavaScript \u4e2d\u4ec0\u4e48\u662f\u539f\u578b\u3001\u539f\u578b\u94fe\uff1f"},"content":{"rendered":"<p>\u5728 JavaScript \u4e2d\uff0c\u6bcf\u4e2a\u5bf9\u8c61\u90fd\u6709\u4e00\u4e2a\u539f\u578b\uff08prototype\uff09\uff0c\u5b83\u662f\u5bf9\u8c61\u7684\u4e00\u4e2a\u5c5e\u6027\uff0c\u53ef\u4ee5\u662f\u53e6\u4e00\u4e2a\u5bf9\u8c61\u6216\u8005 null\u3002\u539f\u578b\u53ef\u4ee5\u88ab\u89c6\u4e3a\u4e00\u4e2a\u6a21\u677f\u6216\u8005\u57fa\u7840\uff0c\u7528\u4e8e\u5bf9\u8c61\u5c5e\u6027\u548c\u65b9\u6cd5\u7684\u7ee7\u627f\u3002<\/p>\n<p><strong>\u539f\u578b\uff08Prototype\uff09\uff1a<\/strong><\/p>\n<ul>\n<li>\u6bcf\u4e2a JavaScript \u5bf9\u8c61\uff08\u9664\u4e86\u4e00\u4e9b\u57fa\u7840\u5bf9\u8c61\uff0c\u6bd4\u5982 Object.prototype\uff09\u90fd\u6709\u4e00\u4e2a\u539f\u578b\u5bf9\u8c61\u3002\u5bf9\u8c61\u7684\u539f\u578b\u53ef\u4ee5\u901a\u8fc7 <code>__proto__<\/code> \u5c5e\u6027\u6765\u8bbf\u95ee\u3002<\/li>\n<li>\u5f53\u8bd5\u56fe\u8bbf\u95ee\u4e00\u4e2a\u5bf9\u8c61\u7684\u5c5e\u6027\u6216\u65b9\u6cd5\u65f6\uff0c\u5982\u679c\u8be5\u5bf9\u8c61\u81ea\u8eab\u6ca1\u6709\u8fd9\u4e2a\u5c5e\u6027\u6216\u65b9\u6cd5\uff0cJavaScript \u5f15\u64ce\u4f1a\u6cbf\u7740\u539f\u578b\u94fe\u53bb\u67e5\u627e\uff0c\u76f4\u5230\u627e\u5230\u5bf9\u5e94\u7684\u5c5e\u6027\u6216\u65b9\u6cd5\u6216\u8005\u5230\u8fbe\u539f\u578b\u94fe\u7684\u672b\u7aef\uff08Object.prototype\uff09\u3002<\/li>\n<\/ul>\n<p><strong>\u539f\u578b\u94fe\uff08Prototype Chain\uff09\uff1a<\/strong><\/p>\n<ul>\n<li>\u539f\u578b\u94fe\u662f\u7531\u6bcf\u4e2a\u5bf9\u8c61\u7684\u539f\u578b\u6307\u5411\u5b83\u7684\u539f\u578b\uff0c\u4f9d\u6b64\u7c7b\u63a8\uff0c\u5f62\u6210\u7684\u94fe\u5f0f\u7ed3\u6784\u3002<\/li>\n<li>\u5f53\u4e00\u4e2a\u5bf9\u8c61\u9700\u8981\u8bbf\u95ee\u5c5e\u6027\u6216\u65b9\u6cd5\u65f6\uff0cJavaScript \u5f15\u64ce\u4f1a\u5148\u5728\u5bf9\u8c61\u672c\u8eab\u67e5\u627e\uff0c\u5982\u679c\u627e\u4e0d\u5230\u5c31\u4f1a\u6cbf\u7740\u539f\u578b\u94fe\u5411\u4e0a\u67e5\u627e\uff0c\u76f4\u5230\u627e\u5230\u5339\u914d\u7684\u5c5e\u6027\u6216\u65b9\u6cd5\u6216\u8005\u5230\u8fbe\u539f\u578b\u94fe\u7684\u672b\u7aef\u3002<\/li>\n<\/ul>\n<p>JavaScript \u4e2d\u7684\u539f\u578b\u548c\u539f\u578b\u94fe\u662f\u5b9e\u73b0\u7ee7\u627f\u548c\u5bf9\u8c61\u5c5e\u6027\u5171\u4eab\u7684\u57fa\u7840\u673a\u5236\u3002\u901a\u8fc7\u539f\u578b\u94fe\uff0c\u5bf9\u8c61\u53ef\u4ee5\u4ece\u5176\u539f\u578b\u5bf9\u8c61\u4e2d\u7ee7\u627f\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u5e76\u4e14\u539f\u578b\u94fe\u7684\u5b58\u5728\u4f7f\u5f97\u5bf9\u8c61\u4e4b\u95f4\u53ef\u4ee5\u5f62\u6210\u4e00\u79cd\u94fe\u5f0f\u5173\u7cfb\uff0c\u65b9\u4fbf\u5c5e\u6027\u548c\u65b9\u6cd5\u7684\u67e5\u627e\u548c\u7ee7\u627f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 JavaScript \u4e2d\uff0c\u6bcf\u4e2a\u5bf9\u8c61\u90fd\u6709\u4e00\u4e2a\u539f\u578b\uff08prototype\uff09\uff0c\u5b83\u662f\u5bf9\u8c61\u7684\u4e00\u4e2a\u5c5e\u6027\uff0c\u53ef\u4ee5\u662f\u53e6\u4e00\u4e2a\u5bf9\u8c61 [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[115],"tags":[],"class_list":["post-12766","post","type-post","status-publish","format-standard","hentry","category-javascript"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12766","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\/11"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=12766"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12766\/revisions"}],"predecessor-version":[{"id":13521,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12766\/revisions\/13521"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=12766"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=12766"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=12766"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}