Is there a more elegant way to transform an array of key-value pairs into a list of objects in TypeScript?
let keys : string [] = ["name", "addr", "age"];
let values : string [][] = [["sam", "NY", "30"],["chris", "WY", "22"],["sue", "TX", "55"]];
The desired output:
[{"name": "sam", "addr": "NY", "age": "30"},
{"name": "chris", "addr": "WY", "age": "22"},
{"name": "sue", "addr": "TX", "age": "55"}]
Array.map function can be used to obtain the desired outcome.
let categories = ["name", "address", "age"];
let data = [["John", "123 Street", "25"], ["Jane", "456 Avenue", "30"], ["Tom", "789 Road", "40"]];
const result = data.map((item) => {
let newData = {};
item.forEach((value, index)=> {
newData[categories[index]] = value;
});
return newData;
});
console.log(result);Combine each array from vals with the elements in heads, then generate an object using Object.fromEntries:
let heads = ["name", "addr", "age"];
let vals = [["sam", "NY", "30"],["chris", "WY", "22"],["sue", "TX", "55"]];
const result = vals.map(val => Object.fromEntries(heads.map((head, idx) => [head, val[idx]])));
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