Question

-1

Finding the number of keys in an object

rated 0 times [ 2] [ 3] / answers: 1 / hits: 49645 / 13 Years ago, sun, july 17, 2011, 12:00:00

Possible Duplicate:

How to efficiently count the number of keys/properties of an object in JavaScript?

var values = [{

    'SPO2': 222.00000,

    'VitalGroupID': 1152,

    'Temperature': 36.6666666666667,

    'DateTimeTaken': '/Date(1301494335000-0400)/',

    'UserID': 1,

    'Height': 182.88,

    'UserName': null,

    'BloodPressureDiastolic': 80,

    'Weight': 100909.090909091,

    'TemperatureMethod': 'Oral',

    'Resprate': null,

    'HeartRate': 111,

    'BloodPressurePosition': 'Standing',

    'VitalSite': 'Popliteal',

    'VitalID': 1135,

    'Laterality': 'Right',

    'HeartRateRegularity': 'Regular',

    'HeadCircumference': '',

    'BloodPressureSystolic': 120,

    'CuffSize': 'XL'

}];



for (i=0; i < values.length; i++) {

        alert(values.length) // gives me 2.

How can find how many keys my object has?

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charisma

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3 Years ago

answered 13 Years ago jonrened · Accepted Answer

var value = {

    'SPO2': 222.00000,

    'VitalGroupID': 1152,

    'Temperature': 36.6666666666667,

    'DateTimeTaken': '/Date(1301494335000-0400)/',

    'UserID': 1,

    'Height': 182.88,

    'UserName': null,

    'BloodPressureDiastolic': 80,

    'Weight': 100909.090909091,

    'TemperatureMethod': 'Oral',

    'Resprate': null,

    'HeartRate': 111,

    'BloodPressurePosition': 'Standing',

    'VitalSite': 'Popliteal',

    'VitalID': 1135,

    'Laterality': 'Right',

    'HeartRateRegularity': 'Regular',

    'HeadCircumference': '',

    'BloodPressureSystolic': 120,

    'CuffSize': 'XL'

};



alert(Object.keys(value).length);