So I have this array of objects:
[ { type: 'month', value: '9' },
{ type: 'day', value: '11' },
{ type: 'year', value: '2021' },
{ type: 'hour', value: '7' },
{ type: 'minute', value: '35' },
{ type: 'second', value: '07' } ]
I need a way to extract the value 9 using the search term month.
Sure I could use:
var myObjects = [
{ type: 'month', value: '9' },
{ type: 'day', value: '11' },
{ type: 'year', value: '2021' },
{ type: 'hour', value: '7' },
{ type: 'minute', value: '35' },
{ type: 'second', value: '07' }
] ;
console.log(myObjects[0]["value"]);
Problem is , this is really not using a search term, and I'm in a situation where the date format can change from en_GB to en_US and other complicated time formats which will make the month switch position to [1], [2] or [3].
Using Array#find:
const data = [ { type: 'month', value: '9' }, { type: 'day', value: '11' }, { type: 'year', value: '2021' }, { type: 'hour', value: '7' }, { type: 'minute', value: '35' }, { type: 'second', value: '07' } ];
const { value } = data.find(({ type }) => type === 'month') || {};
console.log(value);And probably it will be convenient to convert the array of objects into a single object. It can be done this way:
var arr = [
{ type: 'month', value: '9' },
{ type: 'day', value: '11' },
{ type: 'year', value: '2021'},
{ type: 'hour', value: '7' },
{ type: 'minute', value: '35' },
{ type: 'second', value: '07' }
]
const arr_to_obj = arr => {
var obj = {};
for (var a of arr) obj[a.type] = a.value;
return obj;
}
var date = arr_to_obj(arr); // { month:9, day:11, year:2021, ... }
console.log(date.month); // 9
console.log(date.day); // 11
console.log(date.year); // 2021
console.log(date.hour); // 7 ...etcOne more variant:
var arr = [{ type: 'month', value: '9' },
{ type: 'day', value: '11' },
{ type: 'year', value: '2021' },
{ type: 'hour', value: '7' },
{ type: 'minute', value: '35' },
{ type: 'second', value: '07' }];
// var month = arr.filter(x => x.type == 'month')[0].value; // less efficient
var month = arr.find(x => x.type == 'month').value; // more efficient
console.log(month) // 9