How to Filter JSON Array?

Question

User-930371450 posted

var users=
[
{DepartmentID: 13, NAME: "Apple", Score:100},
{DepartmentID: 108, NAME: "Samsung", Score:90},
{DepartmentID: 162, NAME: "Sony", Score:80},
{DepartmentID: 1194, NAME: "HTC", Score:70},
{DepartmentID: 1346, NAME: "Nokia", Score:100}
];

var objPrintUsersScore = $.grep(users, function (v) {
return v.DepartmentID ==13;
});


Result is getting like undefined[object Object]

I need like this [{DepartmentID: 13, NAME: "Apple", Score:100}]

Answer 1

User753101303 posted

Hi,

Be explicit about what you are doing next. It should be an [object Object] and the following code works fine. For now I suspect you are looking as well at some other variable not shown in this code and which is the one that is really undefined...

var users=
[
{DepartmentID: 13, NAME: "Apple", Score:100},
{DepartmentID: 108, NAME: "Samsung", Score:90},
{DepartmentID: 162, NAME: "Sony", Score:80},
{DepartmentID: 1194, NAME: "HTC", Score:70},
{DepartmentID: 1346, NAME: "Nokia", Score:100}
];

var objPrintUsersScore = $.grep(users, function (v) {
return v.DepartmentID ==13;
});
alert(objPrintUsersScore[0].DepartmentID); // shows 13 as expected, be explicit about what you show to get your undefined value

Edit: and alert(JSON.stringify(objPrintUsersScore)); would show the expected JSON string. We likely miss what you are doing next...

Answer 2

User475983607 posted

I would use filter().

const result = users.filter(item => item.DepartmentID == 13);

Or

const result = users.filter(function(item){
	return item.DepartmentID == 13
});

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter