{"id":12563,"date":"2023-11-28T22:58:07","date_gmt":"2023-11-28T14:58:07","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=12563"},"modified":"2023-11-29T22:25:01","modified_gmt":"2023-11-29T14:25:01","slug":"javascript-zhong-object-seal-he-object-freeze-fang","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/javascript-zhong-object-seal-he-object-freeze-fang\/","title":{"rendered":"JavaScript \u4e2d Object.seal \u548c Object.freeze \u65b9\u6cd5\u4e4b\u95f4\u6709\u4ec0\u4e48\u533a\u522b\uff1f"},"content":{"rendered":"<p>\u5f53\u8c08\u8bba JavaScript \u4e2d\u7684 <code>Object.seal<\/code> \u548c <code>Object.freeze<\/code> \u65b9\u6cd5\u65f6\uff0c\u6211\u4f1a\u5f3a\u8c03\u5b83\u4eec\u4e4b\u95f4\u7684\u533a\u522b\uff1a<\/p>\n<ol>\n<li>\n<p><strong>Object.seal<\/strong>\uff1a<\/p>\n<ul>\n<li><code>Object.seal<\/code> \u65b9\u6cd5\u7528\u4e8e\u5c01\u95ed\u5bf9\u8c61\uff0c\u4f7f\u5f97\u5bf9\u8c61\u4e0d\u53ef\u6269\u5c55\uff08\u5373\u65e0\u6cd5\u6dfb\u52a0\u65b0\u5c5e\u6027\uff09\uff0c\u5e76\u4e14\u5c06\u6240\u6709\u5df2\u6709\u5c5e\u6027\u8bbe\u7f6e\u4e3a\u4e0d\u53ef\u914d\u7f6e\u3002\u4f46\u5df2\u6709\u5c5e\u6027\u7684\u503c\u4ecd\u7136\u53ef\u4ee5\u4fee\u6539\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-javascript\">const sealedObj = {\n  prop1: 1,\n  prop2: 'value'\n};\n\nObject.seal(sealedObj);\n\nsealedObj.prop3 = true; \/\/ \u65e0\u6cd5\u6dfb\u52a0\u65b0\u5c5e\u6027\nsealedObj.prop1 = 2; \/\/ \u5df2\u6709\u5c5e\u6027\u503c\u53ef\u4ee5\u4fee\u6539\ndelete sealedObj.prop2; \/\/ \u5df2\u6709\u5c5e\u6027\u4e0d\u53ef\u5220\u9664\n<\/code><\/pre>\n<\/li>\n<li>\n<p><strong>Object.freeze<\/strong>\uff1a<\/p>\n<ul>\n<li><code>Object.freeze<\/code> \u65b9\u6cd5\u7684\u4f5c\u7528\u66f4\u4e3a\u4e25\u683c\uff0c\u5b83\u4e0d\u4ec5\u4f1a\u5c06\u5bf9\u8c61\u8bbe\u4e3a\u4e0d\u53ef\u6269\u5c55\u548c\u5c5e\u6027\u4e0d\u53ef\u914d\u7f6e\uff0c\u8fd8\u4f1a\u5c06\u5df2\u6709\u5c5e\u6027\u7684\u503c\u8bbe\u4e3a\u4e0d\u53ef\u5199\uff08\u5373\u4e0d\u53ef\u4fee\u6539\uff09\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-javascript\">const frozenObj = {\n  prop1: 1,\n  prop2: 'value'\n};\n\nObject.freeze(frozenObj);\n\nfrozenObj.prop3 = true; \/\/ \u65e0\u6cd5\u6dfb\u52a0\u65b0\u5c5e\u6027\nfrozenObj.prop1 = 2; \/\/ \u5df2\u6709\u5c5e\u6027\u503c\u4e0d\u53ef\u4fee\u6539\ndelete frozenObj.prop2; \/\/ \u5df2\u6709\u5c5e\u6027\u4e0d\u53ef\u5220\u9664\n<\/code><\/pre>\n<\/li>\n<\/ol>\n<p>\u6240\u4ee5\uff0c\u5173\u952e\u7684\u533a\u522b\u5728\u4e8e <code>Object.freeze<\/code> \u6bd4 <code>Object.seal<\/code> \u7684\u4fdd\u62a4\u66f4\u52a0\u4e25\u683c\uff0c\u4e0d\u4ec5\u9650\u5236\u4e86\u5c5e\u6027\u7684\u6dfb\u52a0\u548c\u914d\u7f6e\uff0c\u8fd8\u963b\u6b62\u4e86\u5c5e\u6027\u503c\u7684\u4fee\u6539\u3002\u5728\u9762\u8bd5\u4e2d\uff0c\u6211\u4f1a\u5f3a\u8c03\u8fd9\u4e24\u79cd\u65b9\u6cd5\u7684\u5dee\u5f02\uff0c\u5e76\u6839\u636e\u9879\u76ee\u9700\u6c42\u548c\u6570\u636e\u7684\u5b89\u5168\u6027\u6765\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u6765\u4fdd\u62a4\u5bf9\u8c61\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f53\u8c08\u8bba JavaScript \u4e2d\u7684 Object.seal \u548c Object.freeze \u65b9\u6cd5\u65f6\uff0c\u6211\u4f1a\u5f3a\u8c03\u5b83 [&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-12563","post","type-post","status-publish","format-standard","hentry","category-javascript"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12563","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=12563"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12563\/revisions"}],"predecessor-version":[{"id":13546,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12563\/revisions\/13546"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=12563"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=12563"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=12563"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}