{"id":432,"date":"2023-03-21T19:52:11","date_gmt":"2023-03-21T11:52:11","guid":{"rendered":"http:\/\/yusemo.com\/?p=432"},"modified":"2023-06-12T17:51:06","modified_gmt":"2023-06-12T09:51:06","slug":"js%e9%81%8d%e5%8e%86%e5%af%b9%e8%b1%a1%e7%9a%84%e4%b8%83%e7%a7%8d%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/yusemo.com\/?p=432","title":{"rendered":"JS\u904d\u5386\u5bf9\u8c61\u7684\u4e03\u79cd\u65b9\u6cd5"},"content":{"rendered":"<h3>for&#8230;in<\/h3>\n<p><span style=\"color:#c7254e;background-color:#f9f2f4;\">for&#8230;in<\/span> \u53ef\u4ee5\u904d\u5386\u5bf9\u8c61\u7684\u6240\u6709\u53ef\u679a\u4e3e\u5c5e\u6027\uff0c\u5305\u62ec\u5bf9\u8c61\u672c\u8eab\u7684\u548c\u5bf9\u8c61\u7ee7\u627f\u6765\u7684\u5c5e\u6027<\/p>\n<h3>Object.keys()<\/h3>\n<p><span style=\"color:#c7254e;background-color:#f9f2f4;\">Object.keys()<\/span>\u65b9\u6cd5\u53ef\u4ee5\u904d\u5386\u5230\u6240\u6709\u5bf9\u8c61\u672c\u8eab\u7684\u53ef\u679a\u4e3e\u5c5e\u6027\uff0c\u4f46\u662f\u5176\u8fd4\u56de\u503c\u4e3a\u6570\u7ec4<\/p>\n<h3>Object.values()<\/h3>\n<p><span style=\"color:#c7254e;background-color:#f9f2f4;\">Object.values()<\/span>\u4e0e<span style=\"color:#c7254e;background-color:#f9f2f4;\">Object.keys()<\/span>\u904d\u5386\u5bf9\u8c61\u7684\u7279\u6027\u662f\u76f8\u540c\u7684\uff0c\u4f46\u662f\u5176\u8fd4\u56de\u7684\u7ed3\u6784\u662f\u4ee5\u904d\u5386\u7684\u5c5e\u6027\u503c\u6784\u6210\u7684\u6570\u7ec4<\/p>\n<h3>Object.entries()<\/h3>\n<p><span style=\"color:#c7254e;background-color:#f9f2f4;\">Object.entries()<\/span>\u7684\u8fd4\u56de\u503c\u4e3a<span style=\"color:#c7254e;background-color:#f9f2f4;\">Object.values()<\/span>\u4e0e<span style=\"color:#c7254e;background-color:#f9f2f4;\">Object.keys()<\/span>\u7684\u7ed3\u5408\uff0c\u4e5f\u5c31\u662f\u8bf4\u5b83\u4f1a\u8fd4\u56de\u4e00\u4e2a\u5d4c\u5957\u6570\u7ec4\uff0c\u6570\u7ec4\u5185\u5305\u62ec\u4e86\u5c5e\u6027\u540d\u4e0e\u5c5e\u6027\u503c<\/p>\n<h3>Object.getOwnPropertyNames()<\/h3>\n<p>\u5176\u8fd4\u56de\u7ed3\u679c\u4e0e<span style=\"color:#c7254e;background-color:#f9f2f4;\">Object.keys()<\/span>\u5bf9\u5e94\uff0c\u4f46\u662f\u4ed6\u5f97\u7279\u6027\u4e0e\u5176\u76f8\u53cd\uff0c\u4f1a\u8fd4\u56de\u5bf9\u8c61\u5f97\u6240\u6709\u5c5e\u6027\uff0c\u5305\u62ec\u4e86\u4e0d\u53ef\u679a\u4e3e\u5c5e\u6027<\/p>\n<h3>Object.getOwnPropertySymbols()<\/h3>\n<p><span style=\"color:#c7254e;background-color:#f9f2f4;\">Object.getOwnPropertySymbols()<\/span>\u4f1a\u8fd4\u56de\u5bf9\u8c61\u5185\u7684\u6240\u6709Symbol\u5c5e\u6027\uff0c\u8fd4\u56de\u5f62\u5f0f\u4f9d\u65e7\u662f\u6570\u7ec4\uff0c\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u5728\u5bf9\u8c61\u521d\u59cb\u5316\u7684\u65f6\u5019\uff0c\u5185\u90e8\u662f\u4e0d\u4f1a\u5305\u542b\u4efb\u4f55Symbol\u5c5e\u6027<\/p>\n<h3>Reflect.ownKeys()<\/h3>\n<p><span style=\"color:#c7254e;background-color:#f9f2f4;\">Reflect.ownKeys()<\/span>\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u5927\u6742\u70e9\u6570\u7ec4\uff0c\u5373\u5305\u542b\u4e86\u5bf9\u8c61\u7684\u6240\u6709\u5c5e\u6027\uff0c\u65e0\u8bba\u662f\u5426\u53ef\u679a\u4e3e\u8fd8\u662f\u5c5e\u6027\u662fsymbol\uff0c\u8fd8\u662f\u7ee7\u627f\uff0c\u5c06\u6240\u6709\u7684\u5c5e\u6027\u8fd4\u56de<\/p>\n<h3>\u6839\u636e\u904d\u5386\u76ee\u6807\u533a\u5206<\/h3>\n<div class=\"table-box\">\n<table>\n<thead>\n<tr>\n<th>\u904d\u5386\u76ee\u6807<\/th>\n<th>\u65b9\u6cd5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u904d\u5386\u5bf9\u8c61\u672c\u8eab\u7684<strong>\u53ef\u679a\u4e3e<\/strong>\u5c5e\u6027\u4e0d\u5305\u542b<strong>\u7ee7\u627f<\/strong>\u6765\u7684\u5c5e\u6027\uff08\u4e0d\u5305\u62ec<span style=\"color:#c7254e;\">Symbol()<\/span>\uff09<\/td>\n<td>\n<span style=\"color:#c7254e;\">Object.keys()<\/span><br \/>\n<span style=\"color:#c7254e;\">Object.values()<\/span><br \/>\n<span style=\"color:#c7254e;\">Object.entries()<\/span>\n<\/td>\n<\/tr>\n<tr>\n<td>\u904d\u5386\u5bf9\u8c61\u672c\u8eab\u7684<strong>\u53ef\u679a\u4e3e<\/strong>\u5c5e\u6027\u5305\u62ec<strong>\u7ee7\u627f<\/strong>\u6765\u7684\u5c5e\u6027\uff08\u4e0d\u5305\u62ec<span style=\"color:#c7254e;\">Symbol()<\/span>\uff09<\/td>\n<td><span style=\"color:#c7254e;\">for&#8230;in<\/span><\/td>\n<\/tr>\n<tr>\n<td>\u904d\u5386\u5bf9\u8c61\u672c\u8eab\u7684\u6240\u6709\u5c5e\u6027\uff08\u4e0d\u5305\u62ec<span style=\"color:#c7254e;\">Symbol()<\/span>\uff09<\/td>\n<td><span style=\"color:#c7254e;\">Object.getOwnPropertyNames()<\/span><\/td>\n<\/tr>\n<tr>\n<td>\u904d\u5386\u5bf9\u8c61\u7684<span style=\"color:#c7254e;\">Symbol()<\/span>\u5c5e\u6027<\/td>\n<td><span style=\"color:#c7254e;\">Object.getOwnPropertySymbols()<\/span><\/td>\n<\/tr>\n<tr>\n<td>\u904d\u5386\u5bf9\u8c61\u7684\u6240\u6709\u5c5e\u6027<\/td>\n<td><span style=\"color:#c7254e;\">Reflect.ownKeys()<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>\u6839\u636e\u8fd4\u56de\u503c\u533a\u5206<\/h3>\n<div class=\"table-box\">\n<table>\n<thead>\n<tr>\n<th style=\"min-width:150px;\">\u8fd4\u56de\u503c<\/th>\n<th>\u65b9\u6cd5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u8fd4\u56de\u6570\u7ec4<\/td>\n<td>\n<span style=\"color:#c7254e;\"> Object.keys()<\/span><br \/>\n<span style=\"color:#c7254e;\">Object.values()<\/span><br \/>\n<span style=\"color:#c7254e;\">Object.entries()<\/span><br \/>\n<span style=\"color:#c7254e;\">Object.getOwnPropertyNames()<\/span><br \/><span style=\"color:#c7254e;\">Object.getOwnPropertySymbols()<\/span><br \/>\n<span style=\"color:#c7254e;\">Reflect.ownKeys()<\/span><\/td>\n<\/tr>\n<tr>\n<td>\u4e0d\u8fd4\u56de\u503c<\/td>\n<td><span style=\"color:#c7254e;\">for&#8230;in<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>\u6839\u636e\u904d\u5386\u503c\u533a\u5206<\/h3>\n<div class=\"table-box\">\n<table>\n<thead>\n<tr>\n<th style=\"min-width:150px;\">\u904d\u5386\u503c<\/th>\n<th>\u65b9\u6cd5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u904d\u5386\u5c5e\u6027<\/td>\n<td><span style=\"color:#c7254e;\">Reflect.ownKeys()<\/span><br \/>\n<span style=\"color:#c7254e;\">Object.getOwnPropertyNames()<\/span><br \/>\n<span style=\"color:#c7254e;\">Object.keys()<\/span><\/td>\n<\/tr>\n<tr>\n<td>\u904d\u5386\u5c5e\u6027\u503c<\/td>\n<td><span style=\"color:#c7254e;\">Object.getOwnPropertySymbols()<\/span><br \/>\n<span style=\"color:#c7254e;\">Object.values()<\/span><\/td>\n<\/tr>\n<tr>\n<td>\u904d\u5386\u5168\u90e8<\/td>\n<td><span style=\"color:#c7254e;\">for&#8230;in<\/span><br \/>\n<span style=\"color:#c7254e;\">Object.entries()<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>for&#8230;in for&#8230;in \u53ef\u4ee5\u904d\u5386\u5bf9\u8c61\u7684\u6240\u6709\u53ef\u679a\u4e3e\u5c5e\u6027\uff0c\u5305\u62ec\u5bf9\u8c61\u672c\u8eab\u7684\u548c\u5bf9\u8c61\u7ee7\u627f\u6765\u7684 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[41,39],"tags":[],"_links":{"self":[{"href":"https:\/\/yusemo.com\/index.php?rest_route=\/wp\/v2\/posts\/432"}],"collection":[{"href":"https:\/\/yusemo.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yusemo.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yusemo.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yusemo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=432"}],"version-history":[{"count":20,"href":"https:\/\/yusemo.com\/index.php?rest_route=\/wp\/v2\/posts\/432\/revisions"}],"predecessor-version":[{"id":485,"href":"https:\/\/yusemo.com\/index.php?rest_route=\/wp\/v2\/posts\/432\/revisions\/485"}],"wp:attachment":[{"href":"https:\/\/yusemo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yusemo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yusemo.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}