javascript - 将一个 JavaScript 对象分成两个单独的变量

Question

如果值 contact 为 null，我试图根据事实将 JavaScript 对象分成两个单独的数组。我无法将值存储到单独的对象中，而且我不确定如何将它们存储在相应的对象中。我做了一个fiddle帮助您使用此代码。

var data = [{
    address: "234 BLUE WAY",
    addressType: "Mailing",
    city: "DONKY KONG CITY",
    contact: null,
    country: "US",
    email: "JANEER@GMAIL.COM",
    zipCode: "44222"
  },
  {
    address: "123 GETYO WAY",
    addressType: "Mailing",
    city: "NARNIA",
    contact: "JAMES DO",
    country: "US",
    email: "JAMES@MYEMAIL.COM",
    zipCode: "13123"
  }

];

var empContactInfoAddress;
var emergencyContactInfoAddress;

for (let d in data) {
  if (data[d].contact == null) {

    Object.keys(data[d]).forEach((key) => {
      this.empContactInfoAddress[d][key] = data[d][key];
    });
  } else {
    Object.keys(data[d]).forEach((key) => {
      this.emergencyContactInfoAddress[d][key] = data[d][key];
    });

  }
}
console.log('empContactInfoAddress', this.empContactInfoAddress)
console.log('emergencyContactInfoAddress', this.emergencyContactInfoAddress)

Answer 1

您可以根据contact 属性filter()。

如果你有非常大的列表，你可以使用像 reduce 这样的东西，它可以让你通过一个循环遍历数据来做到这一点。但是 filter() 非常容易阅读，对我来说这平衡了额外的工作，除非有瓶颈。

var data = [{address: "234 BLUE WAY",addressType: "Mailing",city: "DONKY KONG CITY",contact: null,country: "US",email: "JANEER@GMAIL.COM",zipCode: "44222"},{address: "123 GETYO WAY",addressType: "Mailing",city: "NARNIA",contact: "JAMES DO",country: "US",email: "JAMES@MYEMAIL.COM",zipCode: "13123"}];

let NoContact = data.filter(d =>  d.contact == undefined)
let Contact = data.filter(d => d.contact)

console.log("no contact: ", NoContact)
console.log("contact: ", Contact)