Question

我很难在javascript中使用if else条件在对象中创建新键。这是一个对象：

userInfo: {
      userid: userInfo.userid,
      pid: userInfo.pid,
      usernameType: userInfo.usernameType,
      if(getCookieValue('JetPrivilege_CCounter_C', 'userAcceptedCookie')=="true"){
        cookieAccept:'Y'
        cookieDateTime: getCookieValue('JetPrivilege_CCounter_C', 'ad')
        sessionID : JSESSIONID
        cookieAcceptedProperty : getCookieValue('JetPrivilege_CCounter_C', 'as');
        sessionDateTime :JSESSIONTIME;
      }
      else
      {
        cookieAccept:'N'
      },
      activeStatus: userInfo.activeStatus,
      age: userInfo.age,
      gender: userInfo.gender
    }

我需要的是如果我的条件为真，那么创建对象

userInfo: {
  userid: userInfo.userid,
  pid: userInfo.pid,
  usernameType: userInfo.usernameType,
  cookieAccept:'Y'
  cookieDateTime: getCookieValue('JetPrivilege_CCounter_C', 'ad')
  sessionID : JSESSIONID
  cookieAcceptedProperty : getCookieValue('JetPrivilege_CCounter_C', 'as');
  sessionDateTime :JSESSIONTIME;
  activeStatus: userInfo.activeStatus,
  age: userInfo.age,
  gender: userInfo.gender
}

否则

userInfo: {
  userid: userInfo.userid,
  pid: userInfo.pid,
  usernameType: userInfo.usernameType,
  cookieAccept:'N'
  activeStatus: userInfo.activeStatus,
  age: userInfo.age,
  gender: userInfo.gender
}

Answer 1

您不能将if else语句直接放入对象声明中。您可以做的是使用静态值创建对象，并使用if else在声明后为对象赋值。：

userInfo: {
  userid: userInfo.userid,
  pid: userInfo.pid,
  usernameType: userInfo.usernameType,
  activeStatus: userInfo.activeStatus,
  age: userInfo.age,
  gender: userInfo.gender
}

if (getCookieValue('JetPrivilege_CCounter_C', 'userAcceptedCookie') == "true") {
  userInfo.cookieAccept = 'Y'
  userInfo.cookieDateTime = getCookieValue('JetPrivilege_CCounter_C', 'ad')
  userInfo.sessionID = JSESSIONID
  userInfo.cookieAcceptedProperty = getCookieValue('JetPrivilege_CCounter_C', 'as');
  userInfo.sessionDateTime = JSESSIONTIME;
} else {
  userInfo.cookieAccept = 'N'
}

Answer 2

在对象后面添加密钥：

var data = {
  userInfo: {
    userid: userInfo.userid,
    pid: userInfo.pid,
    usernameType: userInfo.usernameType,
    activeStatus: userInfo.activeStatus,
    age: userInfo.age,
    gender: userInfo.gender
};

if (getCookieValue('JetPrivilege_CCounter_C','userAcceptedCookie')=="true") {
  data.userInfo.cookieAccept:'Y';
  data.userInfo.ookieDateTime: getCookieValue('JetPrivilege_CCounter_C', 'ad');
  data.userInfo.sessionID : JSESSIONID;
  data.userInfo.cookieAcceptedProperty : getCookieValue('JetPrivilege_CCounter_C', 'as');
  data.userInfo.sessionDateTime :JSESSIONTIME;
} else {
  data.userInfo.cookieAccept:'N';
}

Answer 3

另一种方法如下：

let userInfo = {
    userid: userInfo.userid,
    pid: userInfo.pid,
    usernameType: userInfo.usernameType,
    ...getCookieValue('JetPrivilege_CCounter_C', 'userAcceptedCookie') && {
        cookieAccept: 'Y',
        cookieDateTime: getCookieValue('JetPrivilege_CCounter_C', 'ad'),
        sessionID: JSESSIONID,
        cookieAcceptedProperty: getCookieValue('JetPrivilege_CCounter_C', 'as'),
        sessionDateTime: JSESSIONTIME
    },
    ...!getCookieValue('JetPrivilege_CCounter_C', 'userAcceptedCookie') && {
        cookieAccept: 'N'
    },
    activeStatus: userInfo.activeStatus,
    age: userInfo.age,
    gender: userInfo.gender
}

这是因为如果对象文字的扩展运算符的操作数是一个没有可枚举的自有属性的对象，那么它就不会做任何事情[See]

您可以在此处测试简化版本：

＆＃13;

let userInfo = {
  userid: 1,
  ...false && {
    cookieAccept: 'Y',
    cookieDateTime: 1,
    sessionID: 1,
    cookieAcceptedProperty: 1,
    sessionDateTime: 1
  },
  ...true && {
    cookieAccept: 'N'
  },
  activeStatus: 2,
  age: 2,
  gender: 2
}

console.log(userInfo)

＆＃13;

如何使用if else语句在javascript对象中创建键

3 个答案: