Filter an array based on an object property [duplicate]

Question

I have an array of objects, something as follows:

var events = [   { date: "18-02-2016", name: "event A" },   { date: "22-02-2016", name: "event B" },   { date: "19-02-2016", name: "event C" },   { date: "22-02-2016", name: "event D" } ]; 

And I have a date, for example "22-02-2016". How can I get an array with all object which date is the same as the given date? So in this example I would get events B and D.

Answer 1

You could use array's filter() function:

function filter_dates(event) {     return event.date == "22-02-2016"; }  var filtered = events.filter(filter_dates); 

The filter_dates() method can be standalone as in this example to be reused, or it could be inlined as an anonymous method - totally your choice =]

A quick / easy alternative is just a straightforward loop:

var filtered = []; for (var i = 0; i < events.length; i++) {     if (events[i].date == "22-02-2016") {         filtered.push(events[i]);     } } 

Answer 2

User Array.prototype.filter() as follows:.

var filteredEvents = events.filter(function(event){     return event.date == '22-02-2016'; });