{"id":34234,"date":"2025-04-29T09:14:12","date_gmt":"2025-04-29T01:14:12","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/34234.html"},"modified":"2025-04-29T09:14:12","modified_gmt":"2025-04-29T01:14:12","slug":"%e9%99%a4%e4%ba%86object-freeze%ef%bc%8cjavascript%e4%b8%ad%e8%bf%98%e6%9c%89%e5%93%aa%e4%ba%9b%e4%bc%98%e5%8c%96%e6%80%a7%e8%83%bd%e7%9a%84%e5%af%b9%e8%b1%a1%e9%99%90%e5%88%b6%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/34234.html","title":{"rendered":"\u9664\u4e86Object.freeze()\uff0cJavaScript\u4e2d\u8fd8\u6709\u54ea\u4e9b\u4f18\u5316\u6027\u80fd\u7684\u5bf9\u8c61\u9650\u5236\u65b9\u6cd5\uff1f"},"content":{"rendered":"

\u9664\u4e86Object.freeze()，JavaScript\u4e2d\u8fd8\u6709\u54ea\u4e9b\u4f18\u5316\u6027\u80fd\u7684\u5bf9\u8c61\u9650\u5236\u65b9\u6cd5？<\/h2>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\u524d\u8a00<\/h3>\n

\u5728\u524d\u7aef\u5f00\u53d1\u4e2d，\u6027\u80fd\u4f18\u5316\u662f\u4e00\u4e2a\u6c38\u6052\u7684\u8bdd\u9898\u3002\u5f53\u6211\u4eec\u5904\u7406\u5927\u578b\u5bf9\u8c61\u6216\u9891\u7e41\u64cd\u4f5c\u5bf9\u8c61\u65f6，JavaScript \u63d0\u4f9b\u7684\u5bf9\u8c61\u9650\u5236\u65b9\u6cd5\u80fd\u6709\u6548\u63d0\u5347\u4ee3\u7801\u6267\u884c\u6548\u7387\u3002\u4f17\u6240\u5468\u77e5\u7684 Object.freeze() \u53ef\u4ee5\u51bb\u7ed3\u5bf9\u8c61，\u4f46 ECMAScript \u8fd8\u63d0\u4f9b\u4e86\u5176\u4ed6\u7c7b\u4f3c\u65b9\u6cd5\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\u7684\u4f7f\u7528\u573a\u666f\u3001\u5dee\u5f02\u548c\u6027\u80fd\u4f18\u5316\u539f\u7406，\u5e76\u8f85\u4ee5\u4ee3\u7801\u793a\u4f8b\u548c\u5bf9\u6bd4\u8868\u683c\u3002<\/p>\n

\n

\u4e00\u3001\u5bf9\u8c61\u9650\u5236\u65b9\u6cd5\u5206\u7c7b<\/h3>\n

JavaScript \u63d0\u4f9b\u4e86\u4e09\u4e2a\u5c42\u7ea7\u7684\u65b9\u6cd5\u6765\u63a7\u5236\u5bf9\u8c61\u7684\u884c\u4e3a，\u6309\u9650\u5236\u4e25\u683c\u7a0b\u5ea6\u6392\u5e8f\u5982\u4e0b：<\/p>\n

  • Object.preventExtensions()<\/li>\n
  • Object.seal()<\/li>\n
  • Object.freeze()<\/li>\n

    1. Object.preventExtensions()<\/h4>\n
      \n
    • \u4f5c\u7528：\u7981\u6b62\u5bf9\u8c61\u6dfb\u52a0\u65b0\u5c5e\u6027<\/li>\n
    • \u5141\u8bb8\u64cd\u4f5c：\u53ef\u5220\u9664\u6216\u4fee\u6539\u5df2\u6709\u5c5e\u6027<\/li>\n
    • \u68c0\u6d4b\u65b9\u6cd5：Object.isExtensible(obj)<\/li>\n<\/ul>\n

      const<\/span> obj =<\/span> {<\/span> name:<\/span> "Alice"<\/span> }<\/span>;<\/span>
      \nObject.<\/span>preventExtensions<\/span>(<\/span>obj)<\/span>;<\/span><\/p>\n

      obj.<\/span>age =<\/span> 25<\/span>;<\/span> \/\/ \u9759\u9ed8\u5931\u8d25（\u4e25\u683c\u6a21\u5f0f\u4e0b\u62a5\u9519）<\/span>
      \ndelete<\/span> obj.<\/span>name;<\/span> \/\/ \u6210\u529f<\/span>
      \nobj.<\/span>name =<\/span> "Bob"<\/span>;<\/span> \/\/ \u6210\u529f<\/span><\/p>\n

      2. Object.seal()<\/h4>\n
        \n
      • \u4f5c\u7528：\u7981\u6b62\u6dfb\u52a0\/\u5220\u9664\u5c5e\u6027<\/li>\n
      • \u5141\u8bb8\u64cd\u4f5c：\u4fee\u6539\u5df2\u6709\u5c5e\u6027\u7684\u503c<\/li>\n
      • \u68c0\u6d4b\u65b9\u6cd5：Object.isSealed(obj)<\/li>\n<\/ul>\n

        const<\/span> obj =<\/span> {<\/span> id:<\/span> 1<\/span> }<\/span>;<\/span>
        \nObject.<\/span>seal<\/span>(<\/span>obj)<\/span>;<\/span><\/p>\n

        obj.<\/span>id =<\/span> 2<\/span>;<\/span> \/\/ \u6210\u529f<\/span>
        \nobj.<\/span>name =<\/span> "New"<\/span>;<\/span> \/\/ \u5931\u8d25<\/span>
        \ndelete<\/span> obj.<\/span>id;<\/span> \/\/ \u5931\u8d25<\/span><\/p>\n

        3. Object.freeze()<\/h4>\n
          \n
        • \u4f5c\u7528：\u7981\u6b62\u4efb\u4f55\u5c5e\u6027\u53d8\u66f4（\u6700\u4e25\u683c）<\/li>\n
        • \u68c0\u6d4b\u65b9\u6cd5：Object.isFrozen(obj)<\/li>\n<\/ul>\n

          const<\/span> obj =<\/span> {<\/span> score:<\/span> 90<\/span> }<\/span>;<\/span>
          \nObject.<\/span>freeze<\/span>(<\/span>obj)<\/span>;<\/span><\/p>\n

          obj.<\/span>score =<\/span> 100<\/span>;<\/span> \/\/ \u5931\u8d25<\/span>
          \ndelete<\/span> obj.<\/span>score;<\/span> \/\/ \u5931\u8d25<\/span><\/p>\n

          \n

          \u4e8c\u3001\u65b9\u6cd5\u5bf9\u6bd4\u8868\u683c<\/h3>\n\n\u65b9\u6cd5\u6dfb\u52a0\u5c5e\u6027\u5220\u9664\u5c5e\u6027\u4fee\u6539\u5c5e\u6027\u503c\u53ef\u9006\u6027<\/tr>\n\n\n\n\n
          Object.preventExtensions()<\/td>\n\u274c<\/td>\n\u2714\ufe0f<\/td>\n\u2714\ufe0f<\/td>\n\u4e0d\u53ef\u9006<\/td>\n<\/tr>\n
          Object.seal()<\/td>\n\u274c<\/td>\n\u274c<\/td>\n\u2714\ufe0f<\/td>\n\u4e0d\u53ef\u9006<\/td>\n<\/tr>\n
          Object.freeze()<\/td>\n\u274c<\/td>\n\u274c<\/td>\n\u274c<\/td>\n\u4e0d\u53ef\u9006<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
          \n

          \u4e09\u3001\u9ad8\u7ea7\u6280\u5de7\u4e0e\u6ce8\u610f\u4e8b\u9879<\/h3>\n

          1. \u6df1\u5ea6\u51bb\u7ed3\u5bf9\u8c61<\/h4>\n

          \u4e0a\u8ff0\u65b9\u6cd5\u5747\u4e3a\u6d45\u5c42\u64cd\u4f5c，\u5d4c\u5957\u5bf9\u8c61\u9700\u9012\u5f52\u5904\u7406：<\/p>\n

          function<\/span> deepFreeze<\/span>(<\/span>obj<\/span>)<\/span> {<\/span>
          \n Object.<\/span>freeze<\/span>(<\/span>obj)<\/span>;<\/span>
          \n Object.<\/span>keys<\/span>(<\/span>obj)<\/span>.<\/span>forEach<\/span>(<\/span>key<\/span> =><\/span> {<\/span>
          \n if<\/span> (<\/span>typeof<\/span> obj[<\/span>key]<\/span> ===<\/span> 'object'<\/span> &&<\/span> !<\/span>Object.<\/span>isFrozen<\/span>(<\/span>obj[<\/span>key]<\/span>)<\/span>)<\/span> {<\/span>
          \n deepFreeze<\/span>(<\/span>obj[<\/span>key]<\/span>)<\/span>;<\/span>
          \n }<\/span>
          \n }<\/span>)<\/span>;<\/span>
          \n}<\/span><\/p>\n

          const<\/span> nestedObj =<\/span> {<\/span> data:<\/span> {<\/span> x:<\/span> 1<\/span> }<\/span> }<\/span>;<\/span>
          \ndeepFreeze<\/span>(<\/span>nestedObj)<\/span>;<\/span>
          \nnestedObj.<\/span>data.<\/span>x =<\/span> 2<\/span>;<\/span> \/\/ \u5931\u8d25<\/span><\/p>\n

          2. \u6027\u80fd\u4f18\u5316\u573a\u666f<\/h4>\n
            \n
          • Vue 2.x：\u4f7f\u7528 Object.freeze() \u8df3\u8fc7\u54cd\u5e94\u5f0f\u8f6c\u6362<\/li>\n
          • \u914d\u7f6e\u5bf9\u8c61：\u9632\u6b62\u610f\u5916\u4fee\u6539<\/li>\n
          • \u4e0d\u53ef\u53d8\u6570\u636e：Redux \u72b6\u6001\u7ba1\u7406\u4e2d\u786e\u4fdd\u7eaf\u51fd\u6570\u7279\u6027<\/li>\n<\/ul>\n
            \n

            \u56db\u3001\u4ee3\u7801\u5b9e\u6218\u6848\u4f8b<\/h3>\n

            \u6848\u4f8b1：\u9632\u6b62\u52a8\u6001\u6269\u5c55\u914d\u7f6e<\/h4>\n

            const<\/span> config =<\/span> {<\/span>
            \n apiUrl:<\/span> "https:\/\/api.example.com"<\/span>,<\/span>
            \n timeout:<\/span> 5000<\/span>
            \n}<\/span>;<\/span><\/p>\n

            Object.<\/span>seal<\/span>(<\/span>config)<\/span>;<\/span><\/p>\n

            \/\/ \u5c1d\u8bd5\u4fee\u6539<\/span>
            \nconfig.<\/span>retry =<\/span> 3<\/span>;<\/span> \/\/ \u5931\u8d25（\u975e\u4e25\u683c\u6a21\u5f0f\u4e0b\u9759\u9ed8\u5931\u8d25）<\/span>
            \nconfig.<\/span>timeout =<\/span> 3000<\/span>;<\/span> \/\/ \u6210\u529f<\/span><\/p>\n

            \u6848\u4f8b2：\u63d0\u5347\u6e32\u67d3\u6027\u80fd<\/h4>\n

            \/\/ Vue \u7ec4\u4ef6\u4e2d\u51bb\u7ed3\u5927\u6570\u636e\u5217\u8868<\/span>
            \nexport<\/span> default<\/span> {<\/span>
            \n data<\/span>(<\/span>)<\/span> {<\/span>
            \n return<\/span> {<\/span>
            \n bigData:<\/span> Object.<\/span>freeze<\/span>(<\/span>fetchHugeList<\/span>(<\/span>)<\/span>)<\/span>
            \n }<\/span>
            \n }<\/span>
            \n}<\/span><\/p>\n

            \n

            \u4e94\u3001\u603b\u7ed3<\/h3>\n\n\u65b9\u6cd5\u9009\u62e9\u7b56\u7565\u9002\u7528\u573a\u666f<\/tr>\n\n\n\n\n
            preventExtensions()<\/td>\n\u9700\u8981\u9632\u6b62\u5c5e\u6027\u589e\u52a0\u4f46\u5141\u8bb8\u4fee\u6539\/\u5220\u9664<\/td>\n<\/tr>\n
            seal()<\/td>\n\u56fa\u5b9a\u5c5e\u6027\u7ed3\u6784\u4f46\u5141\u8bb8\u503c\u53d8\u5316<\/td>\n<\/tr>\n
            freeze()<\/td>\n\u9700\u8981\u5b8c\u5168\u4e0d\u53ef\u53d8\u7684\u914d\u7f6e\u6216\u6570\u636e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            \u901a\u8fc7\u5408\u7406\u4f7f\u7528\u8fd9\u4e09\u79cd\u65b9\u6cd5，\u5f00\u53d1\u8005\u53ef\u4ee5：<\/p>\n

          • \u907f\u514d\u610f\u5916\u7684\u5bf9\u8c61\u4fee\u6539<\/li>\n
          • \u63d0\u5347\u4ee3\u7801\u53ef\u9884\u6d4b\u6027<\/li>\n
          • \u4f18\u5316\u6846\u67b6（\u5982 Vue\u3001React）\u7684\u6e32\u67d3\u6027\u80fd<\/li>\n
          • \u7b26\u5408\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u4e0d\u53ef\u53d8\u6027\u8981\u6c42<\/li>\n

            \u5efa\u8bae\u5728\u5927\u578b\u9879\u76ee\u3001\u9ad8\u9891\u64cd\u4f5c\u5bf9\u8c61\u6216\u9700\u8981\u4e25\u683c\u6570\u636e\u63a7\u5236\u7684\u573a\u666f\u4e2d\u4f18\u5148\u8003\u8651\u8fd9\u4e9b\u65b9\u6cd5\u3002<\/p>\n

            \n

            \u6269\u5c55\u601d\u8003：\u5982\u4f55\u7ed3\u5408 Proxy \u5b9e\u73b0\u66f4\u7075\u6d3b\u7684\u5bf9\u8c61\u63a7\u5236？\u6b22\u8fce\u5728\u8bc4\u8bba\u533a\u8ba8\u8bba！<\/p>\n","protected":false},"excerpt":{"rendered":"

            \u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb157\u6b21\u3002\u5728\u524d\u7aef\u5f00\u53d1\u4e2d\uff0c\u6027\u80fd\u4f18\u5316\u662f\u4e00\u4e2a\u6c38\u6052\u7684\u8bdd\u9898\u3002\u5f53\u6211\u4eec\u5904\u7406\u5927\u578b\u5bf9\u8c61\u6216\u9891\u7e41\u64cd\u4f5c\u5bf9\u8c61\u65f6\uff0cJavaScript \u63d0\u4f9b\u7684\u5bf9\u8c61\u9650\u5236\u65b9\u6cd5\u80fd\u6709\u6548\u63d0\u5347\u4ee3\u7801\u6267\u884c\u6548\u7387\u3002\u4f17\u6240\u5468\u77e5\u7684\u53ef\u4ee5\u51bb\u7ed3\u5bf9\u8c61\uff0c\u4f46 ECMAScript \u8fd8\u63d0\u4f9b\u4e86\u5176\u4ed6\u7c7b\u4f3c\u65b9\u6cd5\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\u7684\u4f7f\u7528\u573a\u666f\u3001\u5dee\u5f02\u548c\u6027\u80fd\u4f18\u5316\u539f\u7406\uff0c\u5e76\u8f85\u4ee5\u4ee3\u7801\u793a\u4f8b\u548c\u5bf9\u6bd4\u8868\u683c\u3002\u65b9\u6cd5\u9009\u62e9\u7b56\u7565\u9002\u7528\u573a\u666f\u9700\u8981\u9632\u6b62\u5c5e\u6027\u589e\u52a0\u4f46\u5141\u8bb8\u4fee\u6539\/\u5220\u9664seal()\u56fa\u5b9a\u5c5e\u6027\u7ed3\u6784\u4f46\u5141\u8bb8\u503c\u53d8\u5316freeze()\u9700\u8981\u5b8c\u5168\u4e0d\u53ef\u53d8\u7684\u914d\u7f6e\u6216\u6570\u636e\u907f\u514d\u610f\u5916\u7684\u5bf9\u8c61\u4fee\u6539\u63d0\u5347\u4ee3\u7801\u53ef\u9884\u6d4b\u6027\u4f18\u5316\u6846\u67b6\uff08\u5982 Vue\u3001React\uff09\u7684\u6e32\u67d3\u6027\u80fd\u3002<\/p>\n","protected":false},"author":2,"featured_media":34233,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[722,187,87,190],"topic":[],"class_list":["post-34234","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-ecmascript","tag-javascript","tag-87","tag-190"],"yoast_head":"\n\u9664\u4e86Object.freeze()\uff0cJavaScript\u4e2d\u8fd8\u6709\u54ea\u4e9b\u4f18\u5316\u6027\u80fd\u7684\u5bf9\u8c61\u9650\u5236\u65b9\u6cd5\uff1f - 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