{"id":12141,"date":"2023-11-28T22:44:46","date_gmt":"2023-11-28T14:44:46","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=12141"},"modified":"2023-11-29T23:31:35","modified_gmt":"2023-11-29T15:31:35","slug":"javascript-zhong-ru-he-chuang-jian-yi-ge-mei-youpr","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/javascript-zhong-ru-he-chuang-jian-yi-ge-mei-youpr\/","title":{"rendered":"JavaScript \u4e2d\u5982\u4f55\u521b\u5efa\u4e00\u4e2a\u6ca1\u6709 prototype (\u539f\u578b)\u7684\u5bf9\u8c61\uff1f"},"content":{"rendered":"<p>\u5728 JavaScript \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7 <code>Object.create(null)<\/code> \u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u6ca1\u6709\u539f\u578b\u7684\u5bf9\u8c61\u3002\u8fd9\u6837\u521b\u5efa\u7684\u5bf9\u8c61\u4e0d\u4f1a\u7ee7\u627f\u4efb\u4f55\u5c5e\u6027\u6216\u65b9\u6cd5\uff0c\u4e5f\u6ca1\u6709\u539f\u578b\u94fe\u3002\u8fd9\u79cd\u65b9\u5f0f\u521b\u5efa\u7684\u5bf9\u8c61\u901a\u5e38\u88ab\u79f0\u4e3a\u201c\u7eaf\u51c0\u7684\u201d\u5bf9\u8c61\u3002<\/p>\n<pre><code class=\"language-javascript\">const obj = Object.create(null);\n\nconsole.log(obj.toString); \/\/ undefined\uff0c\u56e0\u4e3a\u6ca1\u6709\u7ee7\u627f toString \u65b9\u6cd5\nconsole.log(Object.getPrototypeOf(obj)); \/\/ null\uff0c\u56e0\u4e3a\u6ca1\u6709\u539f\u578b\n<\/code><\/pre>\n<p>\u4f7f\u7528 <code>Object.create(null)<\/code> \u521b\u5efa\u7684\u5bf9\u8c61\u4e0d\u4f1a\u7ee7\u627f\u4efb\u4f55\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u56e0\u6b64\u5b83\u66f4\u9002\u5408\u7528\u4f5c\u7b80\u5355\u7684\u6570\u636e\u5b58\u50a8\u6216\u7eaf\u7cb9\u7684\u952e\u503c\u5bf9\u5b58\u50a8\uff0c\u800c\u4e0d\u662f\u4f5c\u4e3a\u4e00\u4e2a\u666e\u901a\u7684 JavaScript \u5bf9\u8c61\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 JavaScript \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7 Object.create(null) \u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u6ca1\u6709\u539f\u578b\u7684\u5bf9\u8c61\u3002\u8fd9 [&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-12141","post","type-post","status-publish","format-standard","hentry","category-javascript"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12141","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=12141"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12141\/revisions"}],"predecessor-version":[{"id":13598,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12141\/revisions\/13598"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=12141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=12141"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=12141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}