Search for values in an array, and put the results in another array jquery

Question

There is an array of objects in javascript. i need to look for an attribute value for that object within that array. All the objects with the matching attributes i need to put them in another array. I'm beginner in jquery, any help would be really appreciated. Thanks.

 var numPerRow = 6;
        for (var i=0; i<subjects.length; i+=numPerRow) {
            // TODO: Implement a row view
var printTitle = subjects[i].getTitle();
if (printTitle.indexOf(searchValue) > -1)
{
            var row = $('<div class="browse-printables-row"></div>');
            for (var j=0; j<numPerRow; j++) {
                var idx = i+j;
                if (idx >= subjects.length) {
                    break;
                }
                // TODO: Implement a printables tile view
                row.append($(
                    '<div class="printable-tile">' +
                        '<img src=' + printTitle[idx].getIconURL() + ' class="subject-tile-icon"></img>' +
                        '<div class="subject-tile-title">' + printTitle[idx].getTitle() + '</div>' +
                    '</div>'
                ));
            }
}
            grid.append(row);

At the very least please post your input (the array), and your expected output. — David Thomas
– David Thomas, Commented Jun 12, 2013 at 14:41
@DavidThomas, no! You guys do my work, and guess what I need! — gdoron
– gdoron, Commented Jun 12, 2013 at 14:42

Ruben Nagoga · Accepted Answer · 2013-06-12 14:50:48Z

1

Read about array's filter method

Example will filter array and return only objects where attribute b equal to 2:

var filtered = [{a: 1, b: 2}, {a: 5, b:2}, {a:2, b:1}].filter(function(el, index, array) {
    if(typeof el.b === 'undefined') return false;
    return (el.b === 2);
});

answered Jun 12, 2013 at 14:50

Ruben Nagoga

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2 Comments

David Thomas Over a year ago

Why not simplify: return typeof el.b === 'undefined' ? false : el.b;?

Ruben Nagoga Over a year ago

I've wrote example to get some specific objects (where attribute b is equal to two) you need to correct your version to 'el.b === 2'. I totally agree that it can be written shorter but I don't agree that short hand 'if' statement is more simpl to read. BTW if you want to check if there is attribute in array of objects your example will not work properly as el.b can be equal to zero and filter's callback function will return 0 which is equal to false.

Suresh Atta · Accepted Answer · 2013-06-12 14:43:08Z

1

Skeleton answer for skeleton question

//declare array
if(jQuery.inArray(yourObj, arrayOfObjs) === -1)
{
not found
}
else
{
found //push in to array
}

answered Jun 12, 2013 at 14:43

Suresh Atta

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