js create object with properties
function Car(make, model, year) {
this.make = make;
this.model = model;
this.year = year;
}js create object with properties
function Car(make, model, year) {
this.make = make;
this.model = model;
this.year = year;
}array of objects create common key as a property and create array of objects
var data = [{ message: 'This is a test', from_user_id: 123, to_user_id: 567 }, { message: 'Another test.', from_user_id: 123, to_user_id: 567 }, { message: 'A third test.', from_user_id: '456', to_user_id: 567 }],
groups = Object.create(null),
result;
data.forEach(function (a) {
groups[a.from_user_id] = groups[a.from_user_id] || [];
groups[a.from_user_id].push(a);
});
result = Object.keys(groups).map(function (k) {
var temp = {};
temp[k] = groups[k];
return temp;
});
console.log(result);Copyright © 2021 Codeinu
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