Javascript 复制 object 中的属性

Question

I have an object as below;

record = {
    prop1: 'X',
    prop2: 'Y',
    prop3: 'Z'
}

Now I want all these properties to be copied to a "row" attribute inside "record". So, it should look like;

record = {
    row: {
        prop1: 'X',
        prop2: 'Y',
        prop3: 'Z'
    }
}

While I can get that using

record.row = record;

What I want is

1. the properties prop1/prop2/prop3 to be removed as direct child of "record" after copying them inside record.row
2. The above statement also ends up repeating the properties inside the row (sort of circular thing) which I want to avoid

How can I achieve this satisfying both the conditions? PS: "propX" are all simple string values, I am fine with a deep/shallow copy

Answer 1

what about this

record = {
    prop1: 'X',
    prop2: 'Y',
    prop3: 'Z'
}
record = {row:{...record}}

or

record = {
    prop1: 'X',
    prop2: 'Y',
    prop3: 'Z'
}
record = Object.assign({},{row:record})

Answer 2

You can do:

let record = {
    prop1: 'X',
    prop2: 'Y',
    prop3: 'Z'
}

record = { ...record, row: record }

For older version of node, you can do this instead:

var record = {
  prop1: 'X',
  prop2: 'Y',
  prop3: 'Z'
};


let newRecord = {}
Object.assign(newRecord, {
  row: record
});

// console.log(newRecord)

Answer 3

Does this solve it? I assume you want the original variable to be overwritten.

record = {
    prop1: 'X',
    prop2: 'Y',
    prop3: 'Z'
}

var tempRecord = {record:record}

record = tempRecord

Answer 4

Solution-1

var record = {
    prop1: 'X',
    prop2: 'Y',
    prop3: 'Z'
}
let newRecord = {row:{}}
Object.keys(record).forEach(key=> newRecord.row[key] = record[key]);

Solution-2

  var record = {
    prop1: 'X',
    prop2: 'Y',
    prop3: 'Z'
  }
  let newRecord = {};

  for (let[key,value] of Object.entries(record)) {
    if (!newRecord['row']) {
      newRecord = {
        row: {}
      };
    }
    newRecord["row"][key] = value;
  }

Solution-3:

var record = {
    prop1: 'X',
    prop2: 'Y',
    prop3: 'Z'
}

record = {row:{...record}}