{"id":53639,"date":"2024-12-03T11:57:24","date_gmt":"2024-12-03T03:57:24","guid":{"rendered":"https:\/\/fwq.ai\/blog\/53639\/"},"modified":"2024-12-03T11:57:24","modified_gmt":"2024-12-03T03:57:24","slug":"%e5%9c%a8-javascript-%e5%af%b9%e8%b1%a1%e4%b8%ad%e5%88%86%e9%85%8d%e5%92%8c%e6%a3%80%e7%b4%a2%e5%80%bc%e7%9a%84%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/53639\/","title":{"rendered":"\u5728 JavaScript \u5bf9\u8c61\u4e2d\u5206\u914d\u548c\u68c0\u7d22\u503c\u7684\u65b9\u6cd5"},"content":{"rendered":"

<\/b> <\/p>\n

\u5728 JavaScript \u5bf9\u8c61\u4e2d\u5206\u914d\u548c\u68c0\u7d22\u503c\u7684\u65b9\u6cd5<\/h1>\n

<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4eca\u5929\u7c73\u4e91\u7ed9\u5927\u5bb6\u5e26\u6765\u4e86\u300a\u5728 JavaScript \u5bf9\u8c61\u4e2d\u5206\u914d\u548c\u68c0\u7d22\u503c\u7684\u65b9\u6cd5\u300b<\/span>\uff0c\u5176\u4e2d\u6d89\u53ca\u5230\u7684\u77e5\u8bc6\u70b9\u5305\u62ec<\/span>\u7b49\u7b49\uff0c\u65e0\u8bba\u4f60\u662f\u5c0f\u767d\u8fd8\u662f\u8001\u624b\uff0c\u90fd\u9002\u5408\u770b\u4e00\u770b\u54e6~\u6709\u597d\u7684\u5efa\u8bae\u4e5f\u6b22\u8fce\u5927\u5bb6\u5728\u8bc4\u8bba\u7559\u8a00\uff0c\u82e5\u662f\u770b\u5b8c\u6709\u6240\u6536\u83b7\uff0c\u4e5f\u5e0c\u671b\u5927\u5bb6\u80fd\u591a\u591a\u70b9\u8d5e\u652f\u6301\u5440\uff01\u4e00\u8d77\u52a0\u6cb9\u5b66\u4e60~<\/p>\n

\"\u5728<\/p>\n

\u4ecb\u7ecd <\/h2>\n

\u53ef\u4ee5\u901a\u8fc7\u56db\u79cd\u65b9\u5f0f\u5c06\u952e\u548c\u503c\u5206\u914d\u7ed9\u5bf9\u8c61\u3002<\/p>\n

    \n
  1. \u70b9\u7b26\u53f7<\/li>\n
  2. \u65b9\u62ec\u53f7\u8868\u793a\u6cd5<\/li>\n
  3. object.defineproperty() \u65b9\u6cd5<\/li>\n
  4. object.defineproperties() \u65b9\u6cd5<\/li>\n<\/ol>\n

    \u70b9\u7b26\u53f7 <\/h2>\n

    \u70b9\u8868\u793a\u6cd5\u662f\u4e00\u79cd\u5728 javascript \u4e2d\u8bbf\u95ee\u5bf9\u8c61\u5c5e\u6027\u7684\u7b80\u5355\u4e14\u5e38\u7528\u7684\u65b9\u6cd5\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u70b9\u8868\u793a\u6cd5\u521b\u5efa\u5c5e\u6027\u5e76\u5c06\u5176\u5206\u914d\u7ed9\u5bf9\u8c61\u3002\u8fd9\u79cd\u65b9\u6cd5\u5141\u8bb8\u60a8\u5728\u521b\u5efa\u5bf9\u8c61\u540e\u52a8\u6001\u5b9a\u4e49\u5c5e\u6027\u3002<\/p>\n

    let objectname = {};  \/\/ \"object literal\" syntax\nobjectname.somekey = somevalue; \/\/ set property and value\n\nconst value = objectname.somekey; \/\/ retrive value\n<\/pre>\n
     \u4f18\u70b9 <\/h3>\n
     \u53ef\u8bfb\u6027\uff1a <\/h4>\n
    \u6613\u4e8e\u9605\u8bfb\u548c\u7406\u89e3\u3002<\/p>\n
    \u793a\u4f8b<\/strong>\uff1aperson.name \u6bd4 person[‘name’] \u66f4\u5bb9\u6613\u89e3\u91ca\u3002<\/p>\n
     \u6613\u4e8e\u4f7f\u7528\uff1a <\/h4>\n
    \u7b80\u5355\u7684\u8bed\u6cd5\uff0c\u53ef\u4ee5\u5feb\u901f\u7f16\u5199\u3002<\/p>\n
     \u9759\u6001\u5c5e\u6027\u540d\u79f0\uff1a <\/h4>\n
    \u975e\u5e38\u9002\u5408\u8bbf\u95ee\u5177\u6709\u6709\u6548\u6807\u8bc6\u7b26\uff08\u5b57\u6bcd\u3001\u6570\u5b57\u3001\u4e0b\u5212\u7ebf\u548c $\uff09\u7684\u5c5e\u6027\u3002<\/p>\n
     \u7f3a\u70b9 <\/h3>\n
     \u4ec5\u9650\u6709\u6548\u6807\u8bc6\u7b26\uff1a <\/h4>\n
    \u5f53\u5c5e\u6027\u540d\u79f0\u5305\u542b\u7279\u6b8a\u5b57\u7b26\u3001\u7a7a\u683c\u6216\u52a8\u6001\u65f6\u5931\u8d25\u3002<\/p>\n
    \u793a\u4f8b<\/strong>\uff1aperson.first-name \u4f1a\u629b\u51fa\u9519\u8bef\uff1b\u4f7f\u7528 person[“first-name”] \u4ee3\u66ff\u3002<\/p>\n
     \u4e0d\u80fd\u4f7f\u7528\u53d8\u91cf\uff1a <\/h4>\n
    \u793a\u4f8b<\/strong>\uff1a\u5982\u679c\u5c5e\u6027\u540d\u79f0\u5b58\u50a8\u5728\u53d8\u91cf\u4e2d\uff0c\u5219\u4e0d\u80fd\u4f7f\u7528\u70b9\u8868\u793a\u6cd5\u3002<\/p>\n
     \u65b9\u62ec\u53f7\u8868\u793a\u6cd5 <\/h2>\n
    \u65b9\u62ec\u53f7\u8868\u793a\u6cd5\u5141\u8bb8\u4f7f\u7528\u5b57\u7b26\u4e32\u6216\u53d8\u91cf\u52a8\u6001\u8bbf\u95ee\u6216\u64cd\u4f5c\u5bf9\u8c61\u5c5e\u6027\u3002\u65b9\u62ec\u53f7\u6bd4\u70b9\u7b26\u53f7\u66f4\u7075\u6d3b\uff0c\u56e0\u4e3a\u5b83\u4eec\u53ef\u4ee5\u4f7f\u7528\u4efb\u4f55\u5c5e\u6027\u540d\u79f0\u6216\u53d8\u91cf\u3002\u4e0d\u8fc7\uff0c\u5b83\u4eec\u5199\u8d77\u6765\u6709\u70b9\u56f0\u96be\u3002<\/p>\n
     \u4f18\u70b9 <\/h3>\n
     \u52a8\u6001\u5c5e\u6027\u8bbf\u95ee\uff1a <\/h4>\n
    \u5141\u8bb8\u5c5e\u6027\u540d\u79f0\u662f\u53d8\u91cf\u6216\u8868\u8fbe\u5f0f\u3002<\/p>\n
    \u793a\u4f8b<\/strong>\uff1a\u5f53 propname \u4e3a\u53d8\u91cf\u65f6\uff0cobj[propname] \u662f\u7075\u6d3b\u7684\u3002<\/p>\n
     \u7279\u6b8a\u5b57\u7b26\u548c\u7a7a\u683c\uff1a <\/h4>\n
    \u9002\u7528\u4e8e\u5305\u542b\u7279\u6b8a\u5b57\u7b26\u3001\u7a7a\u683c\u6216\u4fdd\u7559\u5173\u952e\u5b57\u7684\u5c5e\u6027\u540d\u79f0\u3002<\/p>\n
    \u793a\u4f8b<\/strong>: obj[“first-name”] \u6216 obj[“class”].<\/p>\n
     \u8fed\u4ee3\u7075\u6d3b\uff1a <\/h4>\n
    \u5728\u5faa\u73af\u5bf9\u8c61\u7684\u5c5e\u6027\u65f6\u5f88\u6709\u7528\u3002<\/p>\n
     \u7f3a\u70b9 <\/h3>\n
     \u53ef\u8bfb\u6027\u8f83\u5dee\uff1a <\/h4>\n
    \u4e0e\u70b9\u8868\u793a\u6cd5\u76f8\u6bd4\u66f4\u96be\u9605\u8bfb\uff0c\u5c24\u5176\u662f\u5bf9\u4e8e\u5d4c\u5957\u5c5e\u6027\u3002<\/p>\n
     \u5bb9\u6613\u51fa\u73b0\u9519\u522b\u5b57\uff1a <\/h4>\n
    \u5f00\u53d1\u8fc7\u7a0b\u4e2d\u53ef\u80fd\u65e0\u6cd5\u53d1\u73b0\u5c5e\u6027\u540d\u79f0\u4e2d\u7684\u9519\u8bef\uff08\u4f8b\u5982 obj[“naem”]\uff09\u3002<\/p>\n
     \u8be6\u7ec6\uff1a <\/h4>\n
    \u9700\u8981\u66f4\u591a\u7684\u8f93\u5165\u548c\u5bf9\u5b57\u7b26\u4e32\u952e\u4f7f\u7528\u5f15\u53f7\u3002<\/p>\n
     object.defineproperty() \u65b9\u6cd5 <\/h2>\n
    object.defineproperty() \u65b9\u6cd5\u4e3a\u5bf9\u8c61\u5b9a\u4e49\u4e00\u4e2a\u65b0\u5c5e\u6027\u6216\u66f4\u65b0\u73b0\u6709\u5c5e\u6027\uff0c\u7136\u540e\u8fd4\u56de\u8be5\u5bf9\u8c61\u3002<\/p>\n
    const user = {};\n\nobject.defineproperty(user,  'firstname', {\n  value: 'john',\n  writable: true, \/\/ `false` is default\n});\n\nconsole.log('first name', user.firstname);\n<\/pre>\n
     object.defineproperties() \u65b9\u6cd5 <\/h3>\n
    object.defineproperties() \u65b9\u6cd5\u76f4\u63a5\u5728\u5bf9\u8c61\u4e0a\u5b9a\u4e49\u65b0\u5c5e\u6027\u6216\u4fee\u6539\u73b0\u6709\u5c5e\u6027\uff0c\u5e76\u8fd4\u56de\u8be5\u5bf9\u8c61\u3002<\/p>\n
    const user = {};\n\nObject.defineProperty(user, {\n  'firstName': {\n    value: 'John',\n  },\n  'lastName': {\n    value: 'Kennady',\n  },\n});\n\nconsole.log('First name', user.firstName);\nconsole.log('Last name', user.lastName);\n<\/pre>\n
    \u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300a\u5728 JavaScript \u5bf9\u8c61\u4e2d\u5206\u914d\u548c\u68c0\u7d22\u503c\u7684\u65b9\u6cd5\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6587\u7ae0\u77e5\u8bc6\uff01<\/p>\n
          \u7248\u672c\u58f0\u660e \u672c\u6587\u8f6c\u8f7d\u4e8e\uff1adev.to \u5982\u6709\u4fb5\u72af\uff0c\u8bf7\u8054\u7cfb\u5220\u9664    <\/p>\n
    \n
    <\/dt>\n
    \n   \u89e3\u51b3vsftpd\u8fde\u63a5\u53d8\u6162\u7684\u60c5\u51b5\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
    \u5728 JavaScript \u5bf9\u8c61\u4e2d\u5206\u914d\u548c\u68c0\u7d22\u503c\u7684\u65b9\u6cd5 \u6536\u85cf \u4eca\u5929\u7c73\u4e91\u7ed9\u5927\u5bb6\u5e26\u6765\u4e86\u300a\u5728 JavaScript \u5bf9\u8c61\u4e2d\u5206\u914d\u548c\u68c0\u7d22\u503c\u7684\u65b9\u6cd5\u300b\uff0c\u5176\u4e2d\u6d89\u53ca\u5230\u7684\u77e5\u8bc6\u70b9\u5305\u62ec\u7b49\u7b49\uff0c\u65e0\u8bba\u4f60\u662f\u5c0f\u767d\u8fd8\u662f\u8001\u624b\uff0c\u90fd\u9002\u5408\u770b\u4e00\u770b\u54e6~\u6709\u597d\u7684\u5efa\u8bae\u4e5f\u6b22\u8fce\u5927\u5bb6\u5728\u8bc4\u8bba\u7559\u8a00\uff0c\u82e5\u662f\u770b\u5b8c\u6709\u6240\u6536\u83b7\uff0c\u4e5f\u5e0c\u671b\u5927\u5bb6\u80fd\u591a\u591a\u70b9\u8d5e\u652f\u6301\u5440\uff01\u4e00\u8d77\u52a0\u6cb9\u5b66\u4e60~ \u4ecb\u7ecd \u53ef\u4ee5\u901a\u8fc7\u56db\u79cd\u65b9\u5f0f\u5c06\u952e\u548c\u503c\u5206\u914d\u7ed9\u5bf9\u8c61\u3002 \u70b9\u7b26\u53f7 \u65b9\u62ec\u53f7\u8868\u793a\u6cd5 object.defineproperty() \u65b9\u6cd5 object.defineproperties() \u65b9\u6cd5 \u70b9\u7b26\u53f7 \u70b9\u8868\u793a\u6cd5\u662f\u4e00\u79cd\u5728 javascript \u4e2d\u8bbf\u95ee\u5bf9\u8c61\u5c5e\u6027\u7684\u7b80\u5355\u4e14\u5e38\u7528\u7684\u65b9\u6cd5\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u70b9\u8868\u793a\u6cd5\u521b\u5efa\u5c5e\u6027\u5e76\u5c06\u5176\u5206\u914d\u7ed9\u5bf9\u8c61\u3002\u8fd9\u79cd\u65b9\u6cd5\u5141\u8bb8\u60a8\u5728\u521b\u5efa\u5bf9\u8c61\u540e\u52a8\u6001\u5b9a\u4e49\u5c5e\u6027\u3002 let objectname = {}; \/\/ “object literal” syntax objectname.somekey = somevalue; \/\/ set property and value const value = objectname.somekey; \/\/ retrive value \u4f18\u70b9 \u53ef\u8bfb\u6027\uff1a \u6613\u4e8e\u9605\u8bfb\u548c\u7406\u89e3\u3002 \u793a\u4f8b\uff1aperson.name \u6bd4 person[‘name’] \u66f4\u5bb9\u6613\u89e3\u91ca\u3002 \u6613\u4e8e\u4f7f\u7528\uff1a \u7b80\u5355\u7684\u8bed\u6cd5\uff0c\u53ef\u4ee5\u5feb\u901f\u7f16\u5199\u3002 \u9759\u6001\u5c5e\u6027\u540d\u79f0\uff1a \u975e\u5e38\u9002\u5408\u8bbf\u95ee\u5177\u6709\u6709\u6548\u6807\u8bc6\u7b26\uff08\u5b57\u6bcd\u3001\u6570\u5b57\u3001\u4e0b\u5212\u7ebf\u548c $\uff09\u7684\u5c5e\u6027\u3002 \u7f3a\u70b9 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-53639","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/53639","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=53639"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/53639\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=53639"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=53639"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=53639"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}