{"id":168588,"date":"2024-05-08T16:26:59","date_gmt":"2024-05-08T08:26:59","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/168588.html"},"modified":"2024-05-08T16:27:03","modified_gmt":"2024-05-08T08:27:03","slug":"javascript-%e5%8e%9f%e5%9e%8b%e6%b1%a1%e6%9f%93%e7%9a%84%e5%8e%9f%e5%9b%a0%e5%92%8c%e8%a7%a3%e5%86%b3%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/168588.html","title":{"rendered":"JavaScript \u539f\u578b\u6c61\u67d3\u7684\u539f\u56e0\u548c\u89e3\u51b3\u65b9\u6cd5"},"content":{"rendered":"

\"JavaScript<\/p>\n

JavaScript \u539f\u578b\u6c61\u67d3\u662f\u5728JavaScript\u7f16\u7a0b\u8fc7\u7a0b\u4e2d\u9047\u5230\u7684\u4e00\u4e2a\u5b89\u5168\u9690\u60a3\uff0c\u4e3b\u8981\u6d89\u53ca\u5230\u5bf9\u8c61\u539f\u578b\u7684\u4e0d\u5f53\u64cd\u4f5c\u3002\u8be5\u95ee\u9898\u7684\u539f\u56e0\u5728\u4e8eJavaScript\u4e2d\u7684\u5bf9\u8c61\u53ef\u4ee5\u901a\u8fc7\u539f\u578b\u94fe\u7ee7\u627f\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u5982\u679c\u653b\u51fb\u8005\u80fd\u591f\u4fee\u6539\u5bf9\u8c61\u7684\u539f\u578b\uff0c\u90a3\u4e48\u6240\u6709\u57fa\u4e8e\u8be5\u539f\u578b\u521b\u5efa\u7684\u5b9e\u4f8b\u90fd\u4f1a\u53d7\u5230\u5f71\u54cd\u3002\u89e3\u51b3\u529e\u6cd5\u4e3b\u8981\u5305\u62ec\uff1a\u4f7f\u7528Object.freeze()\u51bb\u7ed3\u5bf9\u8c61\u3001\u9a8c\u8bc1\u8f93\u5165\u6570\u636e\u3001\u4f7f\u7528Map\u4ee3\u66ff\u666e\u901a\u5bf9\u8c61\u4ee5\u53ca\u66f4\u65b0\u548c\u7ef4\u62a4\u7b2c\u4e09\u65b9\u5e93<\/strong>\u3002\u5176\u4e2d\uff0c\u4f7f\u7528Object.freeze()\u6765\u51bb\u7ed3\u5bf9\u8c61\u53ef\u4ee5\u6709\u6548\u5730\u9632\u6b62\u5bf9\u8c61\u88ab\u4fee\u6539\uff0c\u8fd9\u610f\u5473\u7740\u8be5\u5bf9\u8c61\u7684\u5c5e\u6027\u4e0d\u518d\u53ef\u4ee5\u88ab\u6dfb\u52a0\u3001\u5220\u9664\u6216\u4fee\u6539\uff0c\u6210\u4e3a\u4e00\u79cd\u6709\u6548\u7684\u9884\u9632\u63aa\u65bd\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u539f\u578b\u6c61\u67d3\u7684\u539f\u56e0<\/h3>\n<\/p>\n

JavaScript\u539f\u578b\u6c61\u67d3\u7684\u6839\u672c\u539f\u56e0\u5728\u4e8eJavaScript\u7684\u539f\u578b\u94fe\u7ee7\u627f\u673a\u5236\u3002\u5f53\u4e00\u4e2a\u5bf9\u8c61\u6ca1\u6709\u67d0\u4e2a\u5c5e\u6027\u65f6\uff0c\u5b83\u4f1a\u6cbf\u7740\u539f\u578b\u94fe\u5411\u4e0a\u67e5\u627e\uff0c\u76f4\u5230\u627e\u5230\u8be5\u5c5e\u6027\u6216\u5230\u8fbe\u539f\u578b\u94fe\u7684\u9876\u7aef\u3002\u5982\u679c\u653b\u51fb\u8005\u80fd\u591f\u5728\u539f\u578b\u5bf9\u8c61\u4e0a\u6dfb\u52a0\u6216\u4fee\u6539\u5c5e\u6027\uff0c\u90a3\u4e48\u6240\u6709\u57fa\u4e8e\u8fd9\u4e2a\u539f\u578b\u7684\u5bf9\u8c61\u90fd\u4f1a\u53d7\u5230\u5f71\u54cd\u3002<\/p>\n<\/p>\n

\u539f\u578b\u94fe\u7ee7\u627f\u673a\u5236<\/h4>\n<\/p>\n

\u5728JavaScript\u4e2d\uff0c\u6bcf\u4e00\u4e2a\u5bf9\u8c61\u90fd\u6709\u4e00\u4e2a\u5185\u7f6e\u7684\u5c5e\u6027\uff0c\u6307\u5411\u5176\u539f\u578b\u5bf9\u8c61\u3002\u5f53\u8bbf\u95ee\u4e00\u4e2a\u5bf9\u8c61\u7684\u5c5e\u6027\u6216\u65b9\u6cd5\u65f6\uff0c\u5982\u679c\u8fd9\u4e2a\u5bf9\u8c61\u672c\u8eab\u6ca1\u6709\u8fd9\u4e2a\u5c5e\u6027\u6216\u65b9\u6cd5\uff0c\u89e3\u91ca\u5668\u5c31\u4f1a\u53bb\u5176\u539f\u578b\u5bf9\u8c61\u4e0a\u67e5\u627e\u3002\u8fd9\u4e00\u673a\u5236\u4f7f\u5f97\u539f\u578b\u6c61\u67d3\u6210\u4e3a\u53ef\u80fd\u3002<\/p>\n<\/p>\n

\u6076\u610f\u4ee3\u7801\u7684\u6ce8\u5165<\/h4>\n<\/p>\n

\u901a\u8fc7\u5404\u79cd\u9014\u5f84\uff08\u4f8b\u5982\u7528\u6237\u8f93\u5165\u3001\u7b2c\u4e09\u65b9API\u7b49\uff09\uff0c\u6076\u610f\u4ee3\u7801\u53ef\u80fd\u88ab\u6ce8\u5165\u5230\u5e94\u7528\u4e2d\uff0c\u5982\u679c\u8fd9\u4e9b\u8f93\u5165\u6ca1\u6709\u88ab\u59a5\u5584\u5730\u6821\u9a8c\u548c\u6e05\u6d17\uff0c\u5c31\u53ef\u80fd\u5bfc\u81f4\u539f\u578b\u6c61\u67d3\u3002\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u8fd9\u4e00\u70b9\uff0c\u901a\u8fc7\u4fee\u6539\u5bf9\u8c61\u539f\u578b\u4e0a\u7684\u5c5e\u6027\u6216\u65b9\u6cd5\uff0c\u6765\u6539\u53d8\u5e94\u7528\u7684\u884c\u4e3a\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u89e3\u51b3\u65b9\u6cd5<\/h3>\n<\/p>\n

\u89e3\u51b3JavaScript\u539f\u578b\u6c61\u67d3\u7684\u5173\u952e\u5728\u4e8e\u9632\u6b62\u539f\u578b\u7684\u4e0d\u5f53\u4fee\u6539\uff0c\u5e76\u786e\u4fdd\u6570\u636e\u7684\u5b89\u5168\u6027\u3002<\/p>\n<\/p>\n

\u4f7f\u7528Object.freeze()\u51bb\u7ed3\u5bf9\u8c61<\/h4>\n<\/p>\n

\u4f7f\u7528Object.freeze()<\/code>\u53ef\u4ee5\u51bb\u7ed3\u4e00\u4e2a\u5bf9\u8c61\uff0c\u4f7f\u5176\u65e0\u6cd5\u6dfb\u52a0\u3001\u5220\u9664\u5c5e\u6027\uff0c\u5df2\u6709\u5c5e\u6027\u7684\u503c\u4e5f\u65e0\u6cd5\u4fee\u6539\u3002\u8fd9\u4f7f\u5f97\u5373\u4f7f\u653b\u51fb\u8005\u80fd\u591f\u4fee\u6539\u5230\u5bf9\u8c61\u7684\u539f\u578b\uff0c\u4e5f\u65e0\u6cd5\u901a\u8fc7\u4fee\u6539\u51bb\u7ed3\u5bf9\u8c61\u7684\u539f\u578b\u6765\u9020\u6210\u6c61\u67d3\u3002<\/p>\n<\/p>\n

const obj = { name: "SAFe<\/a>" };<\/p>\n
Object.freeze(obj);<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u9a8c\u8bc1\u8f93\u5165\u6570\u636e<\/h4>\n<\/p>\n
\u786e\u4fdd\u6240\u6709\u7684\u8f93\u5165\u6570\u636e\u90fd\u7ecf\u8fc7\u4e25\u683c\u7684\u9a8c\u8bc1\uff0c\u4ee5\u9632\u6076\u610f\u6570\u636e\u9020\u6210\u539f\u578b\u6c61\u67d3\u3002\u5bf9\u4e8e\u4e0d\u53ef\u4fe1\u7684\u6570\u636e\uff0c\u5e94\u7528\u5e94\u5f53\u5b9e\u65bd\u4e00\u7cfb\u5217\u7684\u9a8c\u8bc1\u63aa\u65bd\uff0c\u5305\u62ec\u5bf9\u6570\u636e\u7c7b\u578b\u3001\u683c\u5f0f\u3001\u957f\u5ea6\u7b49\u7684\u68c0\u67e5\u3002<\/p>\n<\/p>\n
\u4f7f\u7528Map\u4ee3\u66ff\u666e\u901a\u5bf9\u8c61<\/h4>\n<\/p>\n
\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u4f7f\u7528Map\u800c\u4e0d\u662f\u666e\u901a\u7684JavaScript\u5bf9\u8c61\u6765\u50a8\u5b58\u952e\u503c\u5bf9\u3002\u4e0e\u666e\u901a\u5bf9\u8c61\u4e0d\u540c\uff0cMap\u4e0d\u4f1a\u53d7\u5230\u539f\u578b\u6c61\u67d3\u7684\u5f71\u54cd\uff0c\u56e0\u4e3a\u5b83\u4eec\u4e0d\u662f\u901a\u8fc7\u539f\u578b\u94fe\u67e5\u627e\u503c\u3002<\/p>\n<\/p>\n
const safeMap = new Map();<\/p>\n
safeMap.set('key', 'value'); \/\/ \u5b89\u5168\u5730\u8bbe\u7f6e\u952e\u503c\u5bf9<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u66f4\u65b0\u548c\u7ef4\u62a4\u7b2c\u4e09\u65b9\u5e93<\/h4>\n<\/p>\n
\u7ecf\u5e38\u66f4\u65b0\u548c\u7ef4\u62a4\u5e94\u7528\u4e2d\u4f7f\u7528\u7684\u7b2c\u4e09\u65b9\u5e93\uff0c\u4ee5\u786e\u4fdd\u4efb\u4f55\u5df2\u77e5\u7684\u5b89\u5168\u6f0f\u6d1e\u90fd\u5f97\u5230\u53ca\u65f6\u4fee\u590d\u3002\u5f88\u591a\u539f\u578b\u6c61\u67d3\u7684\u95ee\u9898\u90fd\u662f\u7531\u4e8e\u4f7f\u7528\u4e86\u5e26\u6709\u5df2\u77e5\u6f0f\u6d1e\u7684\u8001\u65e7\u7b2c\u4e09\u65b9\u5e93\u9020\u6210\u7684\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
JavaScript\u539f\u578b\u6c61\u67d3\u662f\u4e00\u79cd\u4f1a\u5bf9\u5e94\u7528\u5b89\u5168\u9020\u6210\u91cd\u5927\u5a01\u80c1\u7684\u95ee\u9898\u3002\u5b83\u5b58\u5728\u4e8eJavaScript\u7684\u539f\u578b\u94fe\u7ee7\u627f\u673a\u5236\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u6ce8\u5165\u6076\u610f\u4ee3\u7801\u6765\u5b9e\u73b0\u3002\u4e3a\u4e86\u9884\u9632\u8fd9\u4e00\u95ee\u9898\uff0c\u5f00\u53d1\u8005\u9700\u8981\u91c7\u53d6\u5305\u62ec\u51bb\u7ed3\u5bf9\u8c61\u3001\u9a8c\u8bc1\u8f93\u5165\u6570\u636e\u3001\u4f7f\u7528Map\u4ee5\u53ca\u53ca\u65f6\u66f4\u65b0\u7b2c\u4e09\u65b9\u5e93\u7b49\u591a\u79cd\u63aa\u65bd<\/strong>\u3002\u901a\u8fc7\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5927\u5927\u964d\u4f4e\u5e94\u7528\u53d7\u5230\u539f\u578b\u6c61\u67d3\u5f71\u54cd\u7684\u98ce\u9669\uff0c\u4fdd\u969c\u5e94\u7528\u548c\u7528\u6237\u6570\u636e\u7684\u5b89\u5168\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
\u4ec0\u4e48\u662fJavaScript\u539f\u578b\u6c61\u67d3\uff1f<\/strong>
\nJavaScript\u539f\u578b\u6c61\u67d3\u662f\u6307\u5728JavaScript\u4e2d\uff0c\u901a\u8fc7\u66f4\u6539\u539f\u578b\u5bf9\u8c61\u4ee5\u53ca\u539f\u578b\u94fe\u7684\u65b9\u5f0f\uff0c\u5f71\u54cd\u5230\u5176\u4ed6\u5bf9\u8c61\u7684\u5c5e\u6027\u6216\u51fd\u6570\uff0c\u4ece\u800c\u5bfc\u81f4\u7a0b\u5e8f\u51fa\u73b0\u9519\u8bef\u6216\u5b89\u5168\u95ee\u9898\u3002<\/p>\n
JavaScript\u539f\u578b\u6c61\u67d3\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f<\/strong>
\nJavaScript\u539f\u578b\u6c61\u67d3\u4e3b\u8981\u662f\u7531\u4e8e\u5bf9\u539f\u578b\u5bf9\u8c61\u7684\u64cd\u4f5c\u4e0d\u5f53\u9020\u6210\u7684\u3002\u5728JavaScript\u4e2d\uff0c\u6bcf\u4e2a\u5bf9\u8c61\u90fd\u6709\u4e00\u4e2a\u539f\u578b\u5bf9\u8c61\uff0c\u5b83\u5305\u542b\u4e86\u5bf9\u8c61\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002\u5f53\u6211\u4eec\u5bf9\u4e00\u4e2a\u5bf9\u8c61\u8fdb\u884c\u5c5e\u6027\u6216\u65b9\u6cd5\u7684\u4fee\u6539\u65f6\uff0c\u5982\u679c\u8be5\u5c5e\u6027\u6216\u65b9\u6cd5\u4e0d\u5b58\u5728\uff0cJavaScript\u4f1a\u81ea\u52a8\u901a\u8fc7\u539f\u578b\u94fe\u53bb\u67e5\u627e\uff0c\u4ee5\u6b64\u5b9e\u73b0\u5c5e\u6027\u7684\u7ee7\u627f\u548c\u65b9\u6cd5\u7684\u5171\u4eab\u3002\u7136\u800c\uff0c\u5982\u679c\u6211\u4eec\u4e0d\u5c0f\u5fc3\u4fee\u6539\u4e86\u539f\u578b\u5bf9\u8c61\uff0c\u6216\u8005\u5f15\u5165\u4e86\u4e0d\u53ef\u4fe1\u7684\u4ee3\u7801\uff0c\u5c31\u53ef\u80fd\u5bfc\u81f4\u539f\u578b\u94fe\u88ab\u6c61\u67d3\uff0c\u4ece\u800c\u5f71\u54cd\u5230\u5176\u4ed6\u5bf9\u8c61\u3002<\/p>\n
\u5982\u4f55\u89e3\u51b3JavaScript\u539f\u578b\u6c61\u67d3\u95ee\u9898\uff1f<\/strong>
\n\u89e3\u51b3JavaScript\u539f\u578b\u6c61\u67d3\u95ee\u9898\u7684\u65b9\u6cd5\u6709\u591a\u79cd\u3002\u9996\u5148\uff0c\u6211\u4eec\u53ef\u4ee5\u5c3d\u91cf\u907f\u514d\u76f4\u63a5\u4fee\u6539\u5df2\u6709\u7684\u539f\u578b\u5bf9\u8c61\uff0c\u800c\u662f\u521b\u5efa\u65b0\u7684\u5bf9\u8c61\u8fdb\u884c\u6269\u5c55\uff1b\u5176\u6b21\uff0c\u53ef\u4ee5\u4f7f\u7528Object.freeze()\u65b9\u6cd5\u6765\u51bb\u7ed3\u539f\u578b\u5bf9\u8c61\uff0c\u9632\u6b62\u5176\u88ab\u4fee\u6539\uff1b\u53e6\u5916\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e25\u683c\u6a21\u5f0f\uff08'use strict'\uff09\u6765\u9650\u5236\u539f\u578b\u6c61\u67d3\u7684\u53d1\u751f\uff1b\u6700\u540e\uff0c\u53ef\u4ee5\u5bf9\u4f20\u5165\u7684\u5916\u90e8\u6570\u636e\u8fdb\u884c\u4e25\u683c\u7684\u6821\u9a8c\u548c\u8fc7\u6ee4\uff0c\u907f\u514d\u4e0d\u53ef\u4fe1\u7684\u4ee3\u7801\u5bf9\u539f\u578b\u94fe\u9020\u6210\u5f71\u54cd\u3002\u7efc\u5408\u4f7f\u7528\u8fd9\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u6709\u6548\u5730\u9632\u6b62JavaScript\u539f\u578b\u6c61\u67d3\u95ee\u9898\u7684\u53d1\u751f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"JavaScript \u539f\u578b\u6c61\u67d3\u662f\u5728JavaScript\u7f16\u7a0b\u8fc7\u7a0b\u4e2d\u9047\u5230\u7684\u4e00\u4e2a\u5b89\u5168\u9690\u60a3\uff0c\u4e3b\u8981\u6d89\u53ca\u5230\u5bf9\u8c61\u539f\u578b\u7684\u4e0d\u5f53\u64cd […]","protected":false},"author":3,"featured_media":168597,"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\/168588"}],"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=168588"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/168588\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/168597"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=168588"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=168588"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=168588"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}