{"id":13474,"date":"2023-11-29T11:13:04","date_gmt":"2023-11-29T03:13:04","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=13474"},"modified":"2024-10-29T16:27:01","modified_gmt":"2024-10-29T08:27:01","slug":"qian-duan-mian-shi-tiin-yun-suan-fu-heobject-hasow","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/29\/qian-duan-mian-shi-tiin-yun-suan-fu-heobject-hasow\/","title":{"rendered":"\u524d\u7aef\u9762\u8bd5\u9898\uff1ain\u8fd0\u7b97\u7b26\u548cObject. hasOwnProperty\u65b9\u6cd5\u6709\u4ec0\u4e48\u533a\u522b\uff1f"},"content":{"rendered":"<h3>hasOwnPropert \u65b9\u6cd5<\/h3>\n<p><code>hasOwnPropert()<\/code>\u65b9\u6cd5\u8fd4\u56de\u503c\u662f\u4e00\u4e2a\u5e03\u5c14\u503c\uff0c\u6307\u793a\u5bf9\u8c61\u81ea\u8eab\u5c5e\u6027\u4e2d\u662f\u5426\u5177\u6709\u6307\u5b9a\u7684\u5c5e\u6027\uff0c\u56e0\u6b64<br \/>\n\u8fd9\u4e2a\u65b9\u6cd5\u4f1a\u5ffd\u7565\u6389\u90a3\u4e9b\u4ece\u539f\u578b\u94fe\u4e0a\u7ee7\u627f\u5230\u7684\u5c5e\u6027\u3002<br \/>\n\u770b\u4e0b\u9762\u7684\u4f8b\u5b50\uff1a<\/p>\n<pre><code class=\"language-js line-numbers\">Object. prototype. phone= '15345025546'\uff1b \n    let obj = {\n        name\uff1a 'kyle',\n        age:'28'\n    }\nconsole. log(obj. hasOwnProperty('phone')) \/\/ false\nconsole.log(obj. hasOwnProperty('name ')) \/\/ true\n<\/code><\/pre>\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u5982\u679c\u5728\u51fd\u6570\u539f\u578b\u4e0a\u5b9a\u4e49\u4e00\u4e2a\u53d8\u91cfphone, hasOwnProperty\u65b9\u6cd5\u4f1a\u76f4\u63a5\u5ffd\u7565\u6389\u3002<\/p>\n<h3>in\u8fd0\u7b97\u7b26<\/h3>\n<p>\u5982\u679c\u6307\u5b9a\u7684\u5c5e\u6027\u5728\u6307\u5b9a\u7684\u5bf9\u8c61\u6216\u5176\u539f\u578b\u94fe\u4e2d\uff0c\u5219in\u8fd0\u7b97\u7b26\u8fd4\u56detrue\u3002<br \/>\n\u8fd8\u662f\u7528\u4e0a\u9762\u7684\u4f8b\u5b50\u6765\u6f14\u793a\uff1a<\/p>\n<pre><code class=\"language-js line-numbers\">console. log('phone' in obj) \/\/ true\n<\/code><\/pre>\n<p>\u53ef\u4ee5\u770b\u5230in\u8fd0\u7b97\u7b26\u4f1a\u68c0\u67e5\u5b83\u6216\u8005\u5176\u539f\u578b\u94fe\u662f\u5426\u5305\u542b\u5177\u6709\u6307\u5b9a\u540d\u79f0\u7684\u5c5e\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>hasOwnPropert \u65b9\u6cd5 hasOwnPropert()\u65b9\u6cd5\u8fd4\u56de\u503c\u662f\u4e00\u4e2a\u5e03\u5c14\u503c\uff0c\u6307\u793a\u5bf9\u8c61\u81ea\u8eab\u5c5e\u6027\u4e2d\u662f\u5426 [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[103],"tags":[127],"class_list":["post-13474","post","type-post","status-publish","format-standard","hentry","category-qianduan","tag-127"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/13474","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\/8"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=13474"}],"version-history":[{"count":4,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/13474\/revisions"}],"predecessor-version":[{"id":48610,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/13474\/revisions\/48610"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=13474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=13474"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=13474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}