{"id":166138,"date":"2024-05-08T15:30:27","date_gmt":"2024-05-08T07:30:27","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/166138.html"},"modified":"2024-05-08T15:30:34","modified_gmt":"2024-05-08T07:30:34","slug":"javascript%e4%b8%ad%ef%bc%8ca1","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/166138.html","title":{"rendered":"JavaScript\u4e2d\uff0c{a:1"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/26233301\/0e235370-968e-49d6-b41f-1a312267dd19.webp\" alt=\"JavaScript\u4e2d\uff0c{a:1\" \/><\/p>\n<p><p>\u5bf9\u4e0d\u8d77\uff0c\u4f46\u57fa\u4e8e\u60a8\u7ed9\u51fa\u7684\u4fe1\u606f\uff0c\u6211\u65e0\u6cd5\u4e3a\u60a8\u63d0\u4f9b\u4e00\u4e2a\u5b8c\u6574\u7684\u535a\u5ba2\u6587\u7ae0\u3002\u5982\u679c\u60a8\u80fd\u63d0\u4f9b\u66f4\u591a\u7684\u7ec6\u8282\u6216\u4e00\u4e2a\u5b8c\u6574\u7684\u95ee\u9898\uff0c\u6211\u4f1a\u5f88\u4e50\u610f\u5e2e\u52a9\u60a8\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>1. \u5982\u4f55\u5728JavaScript\u4e2d\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u952e\u503c\u5bf9\u7684\u5bf9\u8c61\uff1f<\/strong><br \/>\n\u5728JavaScript\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u82b1\u62ec\u53f7 {} \u6765\u521b\u5efa\u4e00\u4e2a\u5bf9\u8c61\u3002\u5bf9\u8c61\u4e2d\u7684\u952e\u503c\u5bf9\u7528\u5192\u53f7 : \u5206\u9694\uff0c\u952e\u548c\u503c\u4e4b\u95f4\u7528\u9017\u53f7 , \u5206\u9694\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u5f0f\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u952e\u503c\u5bf9\u7684\u5bf9\u8c61\uff1a<\/p>\n<pre><code class=\"language-javascript\">var obj = {a: 1};\n<\/code><\/pre>\n<p>\u8fd9\u6837\u5c31\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3a obj \u7684\u5bf9\u8c61\uff0c\u5176\u4e2d\u5305\u542b\u4e00\u4e2a\u952e\u503c\u5bf9\uff0c\u952e\u4e3a &quot;a&quot;\uff0c\u503c\u4e3a 1\u3002<\/p>\n<p><strong>2. \u5982\u4f55\u4fee\u6539JavaScript\u4e2d\u5bf9\u8c61\u7684\u5c5e\u6027\u503c\uff1f<\/strong><br \/>\n\u8981\u4fee\u6539JavaScript\u5bf9\u8c61\u4e2d\u7684\u5c5e\u6027\u503c\uff0c\u53ef\u4ee5\u901a\u8fc7\u5bf9\u8c61\u540d\u548c\u5c5e\u6027\u540d\u7684\u65b9\u5f0f\u6765\u5f15\u7528\u5bf9\u8c61\u7684\u5c5e\u6027\uff0c\u7136\u540e\u5bf9\u5c5e\u6027\u8fdb\u884c\u8d4b\u503c\u3002\u4f8b\u5982\uff0c\u5982\u679c\u8981\u4fee\u6539\u4e0a\u9762\u4f8b\u5b50\u4e2d\u5bf9\u8c61 obj \u7684\u5c5e\u6027 a \u7684\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u5f0f\uff1a<\/p>\n<pre><code class=\"language-javascript\">obj.a = 2;\n<\/code><\/pre>\n<p>\u8fd9\u6837\u5c31\u5c06 obj \u7684\u5c5e\u6027 a \u7684\u503c\u4fee\u6539\u4e3a 2\u3002<\/p>\n<p><strong>3. JavaScript\u5bf9\u8c61\u7684\u952e\u53ef\u4ee5\u662f\u4ec0\u4e48\u7c7b\u578b\uff1f<\/strong><br \/>\nJavaScript\u5bf9\u8c61\u7684\u952e\u53ef\u4ee5\u662f\u4efb\u4f55\u7c7b\u578b\uff0c\u5305\u62ec\u5b57\u7b26\u4e32\u3001\u6570\u503c\u3001\u5e03\u5c14\u503c\u3001\u51fd\u6570\u3001\u6570\u7ec4\u7b49\u3002\u5728\u521b\u5efa\u5bf9\u8c61\u65f6\uff0c\u53ef\u4ee5\u7528\u5f15\u53f7\u5c06\u952e\u5305\u88f9\u8d77\u6765\uff0c\u6bd4\u5982 &quot;name&quot;\uff0c\u4e5f\u53ef\u4ee5\u4e0d\u7528\u5f15\u53f7\uff0c\u6bd4\u5982 name\u3002\u5f53\u952e\u662f\u5b57\u7b26\u4e32\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u70b9\u8fd0\u7b97\u7b26\u6216\u65b9\u62ec\u53f7\u8fd0\u7b97\u7b26\u6765\u5f15\u7528\u5bf9\u8c61\u7684\u5c5e\u6027\u503c\uff0c\u4f8b\u5982 obj.name \u6216 obj[&quot;name&quot;]\u3002\u5f53\u952e\u662f\u6570\u503c\u3001\u5e03\u5c14\u503c\u7b49\u5176\u4ed6\u7c7b\u578b\u65f6\uff0c\u53ea\u80fd\u4f7f\u7528\u65b9\u62ec\u53f7\u8fd0\u7b97\u7b26\u6765\u5f15\u7528\u5bf9\u8c61\u7684\u5c5e\u6027\u503c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5bf9\u4e0d\u8d77\uff0c\u4f46\u57fa\u4e8e\u60a8\u7ed9\u51fa\u7684\u4fe1\u606f\uff0c\u6211\u65e0\u6cd5\u4e3a\u60a8\u63d0\u4f9b\u4e00\u4e2a\u5b8c\u6574\u7684\u535a\u5ba2\u6587\u7ae0\u3002\u5982\u679c\u60a8\u80fd\u63d0\u4f9b\u66f4\u591a\u7684\u7ec6\u8282\u6216\u4e00\u4e2a\u5b8c\u6574\u7684\u95ee\u9898\uff0c\u6211\u4f1a\u5f88\u4e50 [&hellip;]","protected":false},"author":3,"featured_media":166148,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/166138"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=166138"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/166138\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/166148"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=166138"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=166138"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=166138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}