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Filter nested object by keys using JavaScript
Suppose, we have an array of objects like this −
const arr = [{ 'title': 'Hey',
'foo': 2,
'bar': 3
}, {
'title': 'Sup',
'foo': 3,
'bar': 4
}, {
'title': 'Remove',
'foo': 3,
'bar': 4
}];We are required to write a JavaScript function that takes in one such array as the first input and an array of string literals as the second input.
Our function should then prepare a new array that contains all those objects whose title property is partially or fully included in the second input array of literals.
Example
The code for this will be −
const arr = [{ 'title': 'Hey',
'foo': 2,
'bar': 3
}, {
'title': 'Sup',
'foo': 3,
'bar': 4
}, {
'title': 'Remove',
'foo': 3,
'bar': 4
}];
const filterTitles = ['He', 'Su'];
const filterByTitle = (arr = [], titles = []) => {
let res = [];
res = arr.filter(obj => {
const { title } = obj;
return !!titles.find(el => title.includes(el));
});
return res;
};
console.log(filterByTitle(arr, filterTitles));Output
And the output in the console will be −
[ { title: 'Hey', foo: 2, bar: 3 }, { title: 'Sup', foo: 3, bar: 4 } ]
Updated on: 23-Nov-2020
847 Views
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