Question

99

rated 0 times [ 105] [ 6] / answers: 1 / hits: 21519 / 12 Years ago, thu, november 29, 2012, 12:00:00

How would I check in my array of objects, if a specific item exists (in my case MachineId with id 2)?

[{MachineID:1,SiteID:20},{MachineID:2,SiteID:20},{MachineID:3,SiteID:20},{MachineID:4,SiteID:20}]

I tried this:

if (index instanceof machineIds.MachineID) {

    alert('value is Array!');

} else {

    alert('Not an array');

}

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Total Points: 9

Total Questions: 102

Total Answers: 101

Location: Saint Vincent and the Grenadines

Member since Mon, Jan 16, 2023

1 Year ago

answered 12 Years ago susanajamiep · Accepted Answer

In cross browser way you may use jQuery.grep() method for it:

var item = $.grep(machineIds, function(item) {

    return item.MachineID == index;

});



if (item.length) {

    alert(value is Array!);

}