What's the most efficient way to search for object in an array using another object (not a function).
In javascript there is an array method .find() that accepts a callback to seek an item. How to create a similar function that accepts an object representing an object I want to find (that satisfies provided key-value conditions)? For example:
const array = [
{
param1: 'abc',
param2: 'def',
param3: 123,
},
{
param1: 'test',
param2: 'test2',
param3: 321,
},
{
param1: 'zzz',
param2: 'test2',
param3: 333,
}
]
findInArray(array, {
param1: 'test',
param2: 'test2'
}) // must return 2nd object in an array
Try this code, you can define your filter and loop on the array to find your desired item .
var filter = {
param1: 'test',
param2: 'test2'
};
const array = [
{
param1: 'abc',
param2: 'def',
param3: 123,
},
{
param1: 'test',
param2: 'test2',
param3: 321,
},
{
param1: 'zzz',
param2: 'test2',
param3: 333,
}
]
item = array.filter(function(item) {
for (var key in filter) {
if (item[key] === undefined || item[key] != filter[key])
return false;
}
return true;
});
console.log(item)You can combine Array.find() with a loop that iterates over your query object's keys:
const array = [{
param1: 'abc',
param2: 'def',
param3: 123,
},
{
param1: 'test',
param2: 'test2',
param3: 321,
},
{
param1: 'zzz',
param2: 'test2',
param3: 333,
}
]
, findInArray = (arr, query) =>
arr.find(el => {
let result = true
for(const key in query){
if(el[key] !== query[key]){
result = false
break
}
}
return result
})
console.log(findInArray(array, {
param1: 'test',
param2: 'test2'
}))
console.log(findInArray(array, {
param1: 'abc',
param3: 123
}))
console.log(findInArray(array, {
param1: 'abc',
param2: 'abc',
param3: 123
}))