{"id":159112,"date":"2024-05-08T13:03:25","date_gmt":"2024-05-08T05:03:25","guid":{"rendered":""},"modified":"2024-05-08T13:03:29","modified_gmt":"2024-05-08T05:03:29","slug":"%e5%a6%82%e4%bd%95%e5%88%9b%e5%bb%ba%e4%b8%80%e4%b8%aa-javascript-%e5%af%b9%e8%b1%a1","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/159112.html","title":{"rendered":"\u5982\u4f55\u521b\u5efa\u4e00\u4e2a javascript \u5bf9\u8c61"},"content":{"rendered":"

\"\u5982\u4f55\u521b\u5efa\u4e00\u4e2a<\/p>\n

\u5728JavaScript\u4e2d\uff0c\u521b\u5efa\u5bf9\u8c61\u662f\u4e00\u9879\u57fa\u7840\u4e14\u91cd\u8981\u7684\u6280\u80fd\u3002\u4e00\u4e2aJavaScript\u5bf9\u8c61\u662f\u952e\u503c\u5bf9\u7684\u96c6\u5408\uff0c\u53ef\u4ee5\u7528\u4e8e\u5b58\u50a8\u548c\u64cd\u4f5c\u6570\u636e\u3002\u521b\u5efa\u5bf9\u8c61\u7684\u5e38\u89c1\u65b9\u6cd5\u6709\uff1a\u4f7f\u7528\u82b1\u62ec\u53f7\uff08\u5b57\u9762\u91cf\u65b9\u5f0f\uff09\u3001\u4f7f\u7528new Object()<\/code>\u3001\u4f7f\u7528\u6784\u9020\u51fd\u6570\u548c\u4f7f\u7528Object.create()<\/code><\/strong>\u3002\u5176\u4e2d\uff0c\u4f7f\u7528\u82b1\u62ec\u53f7\u662f\u6700\u76f4\u63a5\u548c\u7b80\u5355\u7684\u65b9\u6cd5\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528\u82b1\u62ec\u53f7\uff08\u5b57\u9762\u91cf\u65b9\u5f0f\uff09<\/h3>\n<\/p>\n

\u8fd9\u662f\u521b\u5efa\u5bf9\u8c61\u6700\u7b80\u4fbf\u7684\u65b9\u5f0f\uff0c\u76f4\u63a5\u4f7f\u7528\u82b1\u62ec\u53f7{}<\/code>\u5373\u53ef\u521b\u5efa\u4e00\u4e2a\u7a7a\u5bf9\u8c61\u3002\u8fd9\u79cd\u65b9\u5f0f\u4e0d\u4ec5\u8bed\u6cd5\u7b80\u5355\uff0c\u6267\u884c\u6548\u7387\u4e5f\u9ad8\u3002\u4f60\u53ef\u4ee5\u5728\u521b\u5efa\u5bf9\u8c61\u65f6\u76f4\u63a5\u521d\u59cb\u5316\u5c5e\u6027\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<\/p>\n

var person = {<\/p>\n
    firstName: "John",<\/p>\n
    lastName: "Doe",<\/p>\n
    age: 30,<\/p>\n
    greet: function() {<\/p>\n
        console.log("Hello, my name is " + this.firstName + " " + this.lastName);<\/p>\n
    }<\/p>\n
};<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u4e2aperson<\/code>\u5bf9\u8c61\u5305\u542b\u4e86\u4e09\u4e2a\u5c5e\u6027\uff08firstName<\/code>\u3001lastName<\/code>\u3001\u548cage<\/code>\uff09\u548c\u4e00\u4e2a\u65b9\u6cd5\uff08greet<\/code>\uff09\u3002\u4f7f\u7528\u5b57\u9762\u91cf\u65b9\u5f0f\u521b\u5efa\u5bf9\u8c61\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u5b9a\u4e49\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u5e76\u7acb\u5373\u521d\u59cb\u5316\u5b83\u4eec\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528NEW OBJECT()<\/code>\u65b9\u6cd5<\/h3>\n<\/p>\n
new Object()<\/code>\u63d0\u4f9b\u4e86\u53e6\u4e00\u79cd\u521b\u5efa\u5bf9\u8c61\u7684\u65b9\u5f0f\uff0c\u901a\u8fc7\u6784\u9020\u51fd\u6570Object()<\/code>\u521b\u5efa\u4e00\u4e2a\u65b0\u5bf9\u8c61\u3002\u8fd9\u79cd\u65b9\u6cd5\u6bd4\u5b57\u9762\u91cf\u65b9\u5f0f\u7a0d\u663e\u590d\u6742\u4e00\u4e9b\uff0c\u5982\u4e0b\u5b9e\u4f8b\uff1a<\/p>\n<\/p>\n
var person = new Object();<\/p>\n
person.firstName = "John";<\/p>\n
person.lastName = "Doe";<\/p>\n
person.age = 30;<\/p>\n
person.greet = function() {<\/p>\n
    console.log("Hello, my name is " + this.firstName + " " + this.lastName);<\/p>\n
};<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4f7f\u7528new Object()<\/code>\u65b9\u6cd5\uff0c\u6211\u4eec\u9996\u5148\u521b\u5efa\u4e86\u4e00\u4e2a\u7a7a\u5bf9\u8c61\uff0c\u7136\u540e\u901a\u8fc7\u70b9\u7b26\u53f7\u6dfb\u52a0\u5c5e\u6027\u548c\u65b9\u6cd5\u3002\u8fd9\u79cd\u65b9\u5f0f\u63d0\u4f9b\u4e86\u66f4\u591a\u7684\u7075\u6d3b\u6027\uff0c\u5141\u8bb8\u6211\u4eec\u5728\u521b\u5efa\u5bf9\u8c61\u540e\u518d\u6dfb\u52a0\u6216\u4fee\u6539\u5c5e\u6027\u548c\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528\u6784\u9020\u51fd\u6570<\/h3>\n<\/p>\n
\u6784\u9020\u51fd\u6570\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u51fd\u6570\uff0c\u4e13\u95e8\u7528\u4e8e\u521b\u5efa\u548c\u521d\u59cb\u5316\u5bf9\u8c61\u3002\u5728JavaScript\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u6784\u9020\u51fd\u6570\uff0c\u7136\u540e\u4f7f\u7528new<\/code>\u5173\u952e\u8bcd\u6765\u521b\u5efa\u5bf9\u8c61\u7684\u5b9e\u4f8b\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<\/p>\n
function Person(firstName, lastName, age) {<\/p>\n
    this.firstName = firstName;<\/p>\n
    this.lastName = lastName;<\/p>\n
    this.age = age;<\/p>\n
    this.greet = function() {<\/p>\n
        console.log("Hello, my name is " + this.firstName + " " + this.lastName);<\/p>\n
    };<\/p>\n
}<\/p>\n
var person1 = new Person("John", "Doe", 30);<\/p>\n
var person2 = new Person("Jane", "Doe", 28);<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4f7f\u7528\u6784\u9020\u51fd\u6570\u521b\u5efa\u5bf9\u8c61\u53ef\u4ee5\u4f7f\u4ee3\u7801\u66f4\u52a0\u7ed3\u6784\u5316\u548c\u53ef\u91cd\u7528\u3002\u6784\u9020\u51fd\u6570\u63d0\u4f9b\u4e86\u4e00\u79cd\u6a21\u677f\uff0c\u53ef\u4ee5\u7528\u6765\u521b\u5efa\u5177\u6709\u76f8\u540c\u5c5e\u6027\u548c\u65b9\u6cd5\u7684\u591a\u4e2a\u5bf9\u8c61\u5b9e\u4f8b\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4f7f\u7528OBJECT.CREATE()<\/code><\/h3>\n<\/p>\n
Object.create()<\/code>\u65b9\u6cd5\u5141\u8bb8\u521b\u5efa\u4e00\u4e2a\u65b0\u5bf9\u8c61\uff0c\u5e76\u6307\u5b9a\u65b0\u5bf9\u8c61\u7684\u539f\u578b\u3002\u8fd9\u662f\u4e00\u79cd\u66f4\u4e3a\u9ad8\u7ea7\u7684\u521b\u5efa\u5bf9\u8c61\u7684\u65b9\u6cd5\uff0c\u5b83\u63d0\u4f9b\u4e86\u5bf9\u539f\u578b\u7ee7\u627f\u7684\u76f4\u63a5\u63a7\u5236\uff0c\u5982\u4e0b\u4f8b\uff1a<\/p>\n<\/p>\n
var personProto = {<\/p>\n
    greet: function() {<\/p>\n
        console.log("Hello, my name is " + this.firstName + " "<\/p>\n
         + this.lastName);<\/p>\n
    }<\/p>\n
};<\/p>\n
var john = Object.create(personProto);<\/p>\n
john.firstName = "John";<\/p>\n
john.lastName = "Doe";<\/p>\n
john.age = 30;<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4f7f\u7528Object.create()<\/code>\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u6307\u5b9a\u65b0\u521b\u5efa\u7684\u5bf9\u8c61\u7684\u539f\u578b\uff0c\u8fd9\u4e3a\u5bf9\u8c61\u95f4\u7684\u7ee7\u627f\u63d0\u4f9b\u4e86\u4e00\u79cd\u5f3a\u6709\u529b\u7684\u673a\u5236\u3002<\/p>\n<\/p>\n
\u603b\u7684\u6765\u8bf4\uff0cJS\u63d0\u4f9b\u4e86\u591a\u79cd\u521b\u5efa\u5bf9\u8c61\u7684\u65b9\u6cd5\u3002\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u7684\u5e94\u7528\u573a\u666f\u4ee5\u53ca\u5f00\u53d1\u8005\u7684\u504f\u597d<\/strong>\u3002\u5bf9\u4e8e\u7b80\u5355\u7684\u5bf9\u8c61\uff0c\u4f7f\u7528\u5bf9\u8c61\u5b57\u9762\u91cf\u53ef\u80fd\u662f\u6700\u65b9\u4fbf\u7684\u3002\u800c\u5bf9\u4e8e\u9700\u8981\u521b\u5efa\u591a\u4e2a\u76f8\u4f3c\u5bf9\u8c61\u7684\u60c5\u51b5\uff0c\u4f7f\u7528\u6784\u9020\u51fd\u6570\u6216Object.create()<\/code>\u5219\u66f4\u4e3a\u5408\u9002\u3002\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u9002\u7528\u573a\u666f\uff0c\u7406\u89e3\u5b83\u4eec\u7684\u7279\u70b9\u548c\u5dee\u5f02\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u5199\u51fa\u66f4\u9ad8\u6548\u3001\u66f4\u6613\u7ef4\u62a4\u7684JavaScript\u4ee3\u7801\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
\u5982\u4f55\u5728JavaScript\u4e2d\u521b\u5efa\u4e00\u4e2a\u5bf9\u8c61\uff1f<\/strong><\/p>\n
    \n
  1. \u4f7f\u7528\u5bf9\u8c61\u5b57\u9762\u91cf\uff1a\u5bf9\u8c61\u5b57\u9762\u91cf\u662f\u4e00\u79cd\u7b80\u6d01\u7684\u65b9\u5f0f\u6765\u521b\u5efa\u548c\u521d\u59cb\u5316\u4e00\u4e2a\u5bf9\u8c61\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u82b1\u62ec\u53f7 {} \u6765\u521b\u5efa\u4e00\u4e2a\u7a7a\u5bf9\u8c61\uff0c\u7136\u540e\u4f7f\u7528\u5192\u53f7 : \u6765\u5206\u914d\u5c5e\u6027\u548c\u503c\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/li>\n<\/ol>\n
    let object = {};\nobject.name = 'John Doe';\nobject.age = 25;\n<\/code><\/pre>\n
      \n
    1. \u4f7f\u7528\u6784\u9020\u51fd\u6570\uff1aJavaScript\u4e2d\u7684\u6784\u9020\u51fd\u6570\u662f\u4e00\u4e2a\u7279\u6b8a\u7684\u51fd\u6570\uff0c\u7528\u4e8e\u521b\u5efa\u5e76\u521d\u59cb\u5316\u4e00\u4e2a\u65b0\u5bf9\u8c61\u3002\u53ef\u4ee5\u4f7f\u7528\u5173\u952e\u5b57 new<\/code> \u6765\u5b9e\u4f8b\u5316\u6784\u9020\u51fd\u6570\uff0c\u7136\u540e\u4f7f\u7528\u70b9\u7b26\u53f7 . \u6765\u6dfb\u52a0\u5c5e\u6027\u548c\u65b9\u6cd5\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/li>\n<\/ol>\n
      function Person(name, age) {\n  this.name = name;\n  this.age = age;\n}\n\nlet person = new Person('John Doe', 25);\n<\/code><\/pre>\n
        \n
      1. \u4f7f\u7528Object.create()\u65b9\u6cd5\uff1a\u8be5\u65b9\u6cd5\u662fJavaScript\u4e2d\u53e6\u4e00\u79cd\u521b\u5efa\u5bf9\u8c61\u7684\u65b9\u5f0f\u3002\u5b83\u63a5\u53d7\u4e00\u4e2a\u539f\u578b\u53c2\u6570\uff0c\u5e76\u57fa\u4e8e\u8be5\u539f\u578b\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5bf9\u8c61\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/li>\n<\/ol>\n
        let person = Object.create(null);\nperson.name = 'John Doe';\nperson.age = 25;\n<\/code><\/pre>\n
        JavaScript\u5bf9\u8c61\u7684\u521b\u5efa\u65b9\u5f0f\u6709\u54ea\u4e9b\uff1f<\/strong><\/p>\n
        JavaScript\u4e2d\u521b\u5efa\u5bf9\u8c61\u7684\u65b9\u5f0f\u4e3b\u8981\u6709\u4ee5\u4e0b\u51e0\u79cd\uff1a<\/p>\n
          \n
        1. \n
          \u5bf9\u8c61\u5b57\u9762\u91cf\uff1a\u4f7f\u7528\u82b1\u62ec\u53f7 {} \u6765\u521b\u5efa\u4e00\u4e2a\u5bf9\u8c61\uff0c\u5e76\u901a\u8fc7\u5c5e\u6027\u548c\u503c\u6765\u521d\u59cb\u5316\u3002\u4f8b\u5982\uff1alet object = {name: 'John', age: 25};<\/code>\u3002<\/p>\n<\/li>\n
        2. \n
          \u4f7f\u7528\u6784\u9020\u51fd\u6570\uff1a\u5b9a\u4e49\u4e00\u4e2a\u51fd\u6570\uff0c\u4f7f\u7528 new<\/code> \u5173\u952e\u5b57\u5b9e\u4f8b\u5316\u8be5\u51fd\u6570\uff0c\u4ece\u800c\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5bf9\u8c61\u3002\u6784\u9020\u51fd\u6570\u53ef\u4ee5\u5b9a\u4e49\u5bf9\u8c61\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002\u4f8b\u5982\uff1a<\/p>\n<\/li>\n<\/ol>\n
          function Person(name, age) {\n   this.name = name;\n   this.age = age;\n}\n\nlet person = new Person('John Doe', 25);\n<\/code><\/pre>\n
            \n
          1. \u4f7f\u7528Object.create()\u65b9\u6cd5\uff1a\u8be5\u65b9\u6cd5\u63a5\u53d7\u4e00\u4e2a\u539f\u578b\u53c2\u6570\uff0c\u5e76\u4ee5\u8be5\u539f\u578b\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5bf9\u8c61\u3002\u4f8b\u5982\uff1a<\/li>\n<\/ol>\n
            let person = Object.create(null);\nperson.name = 'John Doe';\nperson.age = 25;\n<\/code><\/pre>\n
            \u5982\u4f55\u5728JavaScript\u4e2d\u52a8\u6001\u5730\u521b\u5efa\u5bf9\u8c61\uff1f<\/strong><\/p>\n
            \u5728JavaScript\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u5f0f\u52a8\u6001\u5730\u521b\u5efa\u5bf9\u8c61\uff1a<\/p>\n
              \n
            1. \u4f7f\u7528\u6784\u9020\u51fd\u6570\uff1a\u5b9a\u4e49\u4e00\u4e2a\u6784\u9020\u51fd\u6570\uff0c\u5e76\u6839\u636e\u9700\u8981\u4f20\u9012\u53c2\u6570\u6765\u521b\u5efa\u5bf9\u8c61\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/li>\n<\/ol>\n
              function Person(name, age) {\n  this.name = name;\n  this.age = age;\n}\n\nlet person1 = new Person('John', 25);\nlet person2 = new Person('Jane', 30);\n<\/code><\/pre>\n
                \n
              1. \u4f7f\u7528\u5de5\u5382\u51fd\u6570\uff1a\u5b9a\u4e49\u4e00\u4e2a\u5de5\u5382\u51fd\u6570\uff0c\u8be5\u51fd\u6570\u8fd4\u56de\u4e00\u4e2a\u65b0\u521b\u5efa\u7684\u5bf9\u8c61\u3002\u53ef\u4ee5\u6839\u636e\u9700\u8981\u4e3a\u5de5\u5382\u51fd\u6570\u4f20\u9012\u53c2\u6570\uff0c\u5e76\u5728\u51fd\u6570\u5185\u90e8\u4f7f\u7528\u5bf9\u8c61\u5b57\u9762\u91cf\u6765\u521b\u5efa\u5bf9\u8c61\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/li>\n<\/ol>\n
                function createPerson(name, age) {\n  return {\n    name: name,\n    age: age\n  };\n}\n\nlet person1 = createPerson('John', 25);\nlet person2 = createPerson('Jane', 30);\n<\/code><\/pre>\n
                  \n
                1. \u4f7f\u7528Object.create()\u65b9\u6cd5\uff1a\u53ef\u4ee5\u57fa\u4e8e\u73b0\u6709\u7684\u5bf9\u8c61\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5bf9\u8c61\uff0c\u5e76\u6839\u636e\u9700\u8981\u6dfb\u52a0\u6216\u4fee\u6539\u5c5e\u6027\u548c\u65b9\u6cd5\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/li>\n<\/ol>\n
                  let person = {\n  name: 'John',\n  age: 25\n};\n\nlet newPerson = Object.create(person);\nnewPerson.name = 'Jane';\nnewPerson.age = 30;\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"\u5728JavaScript\u4e2d\uff0c\u521b\u5efa\u5bf9\u8c61\u662f\u4e00\u9879\u57fa\u7840\u4e14\u91cd\u8981\u7684\u6280\u80fd\u3002\u4e00\u4e2aJavaScript\u5bf9\u8c61\u662f\u952e\u503c\u5bf9\u7684\u96c6\u5408\uff0c\u53ef\u4ee5\u7528\u4e8e […]","protected":false},"author":3,"featured_media":159115,"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\/159112"}],"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=159112"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/159112\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/159115"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=159112"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=159112"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=159112"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}