convert object keys and values in single Array JS?-CodePudding

I have an object that looks like this:

const dataObj =
{"Tom-29":[ 
    { "number": 12, "string": "hi"},
    { "number": 40, "string": "bye"}
]}

I want something like below and result sorted by number

[
    { Name:"Tom",Age:29,"number": 12, "string": "hi"},
    { Name:"Tom",Age:29,"number": 40, "string": "bye"}
];

How would i do this ? I tried below approach .

 const arr =Object.entries(dataObj).map(itm=>({...itm,Name:itm[0]}));

Please help me to resolve

CodePudding user response：

You can use the object key and append it to each of it's children as a name.

    const dataObj =
    {"Tom-29":[ 
        { "number": 12, "string": "hi"},
        { "number": 40, "string": "bye"}
    ]}

    const results = Object
      .keys(dataObj)
      .map(k => { 
        dataObj[k].forEach(i => { 
          i.name = k.split('-')[0]; 
          i.age = k.split('-')[1]; 
        }); 
        return dataObj[k] 
      })
      .flat();

    console.log(results);

CodePudding user response：

Iterate the dataObj entries with Array.flatMap(), extract the name and age from the key, and then map the values, and add the properties to the original object using array spread:

const dataObj = {"Tom-29":[{"number":12,"string":"hi"},{"number":40,"string":"bye"}]}

const result = Object.entries(dataObj)
  .flatMap(([key, values]) => {
    const [name, age] = key.split('-')
    
    return values.map(v => ({
      name,
      age:  age,
      ...v
    }))
  })
  
console.log(result);