I currently have an object containing key with multiple values.
I also have an array containing a simple key check i.e. ["random", "three"].
I want to return mainData but only with the object and the data from whats in the array i.e. ["random", "three"]
Current Code:
const mainData = {
random: {
name: "Random Entity",
date: "05/04/2022",
startTime: "19:00",
finishTime: "00:00",
},
one: {
name: "One Entity",
date: "16/04/2022",
startTime: "16:00",
finishTime: "20:00",
},
three: {
name: "Three Entity",
date: "19/04/2022",
startTime: "10:00",
finishTime: "11:00",
},
};
export default mainData;
Desired Output
const mainData = {
random: {
name: "Random Entity",
date: "05/04/2022",
startTime: "19:00",
finishTime: "00:00",
},
three: {
name: "Three Entity",
date: "19/04/2022",
startTime: "10:00",
finishTime: "11:00",
},
};
Attempt:
let filterKey = 'random';
const result = Object.entries(mainData).filter(([k, v]) => k== filterKey);
This works only as a single search, not an array search.
Map the array to an entries array ([[key,val],[key,val],...]) and pass it through Object.fromEntries()
const mainData = {"random":{"name":"Random Entity","date":"05/04/2022","startTime":"19:00","finishTime":"00:00"},"one":{"name":"One Entity","date":"16/04/2022","startTime":"16:00","finishTime":"20:00"},"three":{"name":"Three Entity","date":"19/04/2022","startTime":"10:00","finishTime":"11:00"}}
const filters = ["random", "nope", "three"]
const result = Object.fromEntries(
filters
.filter(
key => key in mainData // only include keys that exist in mainData
)
.map(
key => [ key, mainData[key] ]
)
)
console.log(result).as-console-wrapper { max-height: 100% !important; }If you know the keys you'd like to exclude you can use this approach:
const mainData = { random: { name: "Random Entity", date: "05/04/2022", startTime: "19:00", finishTime: "00:00", }, one: { name: "One Entity", date: "16/04/2022", startTime: "16:00", finishTime: "20:00", }, three: { name: "Three Entity", date: "19/04/2022", startTime: "10:00", finishTime: "11:00" } };
const {one, ...desiredData} = mainData;
console.log( desiredData );Alternatively, if you have the filter keys, you can map() the keys to [key, value], from [key,mainData[key]], then create an object from these key-value pairs using Object.fromEntries() as in the demo below:
const mainData = { random: { name: "Random Entity", date: "05/04/2022", startTime: "19:00", finishTime: "00:00", }, one: { name: "One Entity", date: "16/04/2022", startTime: "16:00", finishTime: "20:00", }, three: { name: "Three Entity", date: "19/04/2022", startTime: "10:00", finishTime: "11:00" } };
const desiredData = Object.fromEntries( ["random", "three"].map(f => [f, mainData[f]]) );
console.log( desiredData );