将对象数组转换为具有键值的数组

Question

How to convert an array of objects into an array with keys and values. We are sure to each object contain only one value.

"values":[
    {
        "first(%)":"91.52%"
    },
    {
        "second(%)":"98.98%"
    },
    {
        "Total(%)":"95.00%"
    }
]

Desired output:

"values":[
    "first(%)":"91.52%",
    "second(%)":"98.98%",
    "Total(%)":"95.00%",
]

Answer 1

You could assign all objects to a single object by taking Object.assign .

 var object = { values: [{ "first(%)": "91.52%" }, { "second(%)": "98.98%" }, { "Total(%)": "95.00%" }] }, result = { values: Object.assign({}, ...object.values) }; console.log(result); 

Answer 2

You can use .reduce and the spread syntax to put each object in your values array into the new accumulated object like so:

 const values=[{"first(%)":"91.52%"},{"second(%)":"98.98%"},{"Total(%)":"95.00%"}], valObj = values.reduce((acc, obj) => ({...acc, ...obj}), {}); console.log(valObj); 

Answer 3

JavaScript does not have associative arrays. However you can use objects to store key/values.

Here is a way to extract the key/values from the items in the array and set them on an object using reduce :

 const data = { "values": [ { "first(%)":"91.52%"}, { "second(%)":"98.98%" }, { "Total(%)":"95.00%" } ] }; const result = data.values.reduce((acc, x) => { Object.entries(x).forEach(([key, val]) => acc[key] = val); return acc; }, {}); console.log(result); 

Answer 4

In javascript, you can use Object.assign to store the object in key/value pair because JavaScript does not Support associative arrays. You can use it as an object.

 const data = { values: 
              [{ "first(%)": "91.52%" },
               { "second(%)": "98.98%" },
               { "Total(%)": "95.00%" }] };

 const result = { values: Object.assign({}, ...data.values) };

console.log("result",result);