Javascript: Object comparision with ignored fields. Original source can be found at http://www.sencha.com/forum/showthread.php?59240-Compare-javascript-objects but without ignored fields. #snippet

compareObjects.js

// The javascript compare objects function
function compareObjects(o1, o2, ignoreFields){
    ignoreFields = ignoreFields || [];
    //console.log('Ignore: ' + JSON.stringify(ignoreFields));
    for(var p in o1) {
        if (ignoreFields.indexOf(p) < 0) {
            if(o1[p] !== o2[p]){
                return false;
            }
        }
        // else {
        //     console.log('Ignoring ' + p);
        // }
    }
    for(var p in o2){
        if (ignoreFields.indexOf(p) < 0) {
            if(o1[p] !== o2[p]){
                return false;
            }
        }
        // else {
        //     console.log('Ignoring ' + p);
        // }
    }
    return true;
}

testCompareObjects.js

// NodeUnit test case

this.suitApplications = {
    'Test compareObjects on very equal objects': function (test) {
        var o1 = {apa: 'Apa', bepa: 'Bepa'};
        var o2 = {bepa: 'Bepa', apa: 'Apa'};

        test.ok(compareObjects(o1, o2));
        test.done();
    }
    ,'Test compareObjects on unorder but equal objects': function (test) {
        var o1 = {apa: 'Apa', bepa: 'Bepa'};
        var o2 = {bepa: 'Bepa', apa: 'Apa'};

        test.ok(compareObjects(o1, o2));
        test.done();
    }
    ,'Test compareObjects on inequal objects': function (test) {
        var o1 = {apa: 'Apa', bepa: 'Bepa'};
        var o2 = {cepa: 'Cepa', depa: 'Depa'};

        test.ok(!compareObjects(o1, o2));
        test.done();
    }
    ,'Test compareObjects on inequal objects with unneeded ignore fileds': function (test) {
        var o1 = {apa: 'Apa', bepa: 'Bepa'};
        var o2 = {apa: 'Apa', cepa: 'Ignore me', bepa: 'Bepa'};

        test.ok(!compareObjects(o1, o2, ['xepa']));
        test.done();
    }
    ,'Test compareObjects on inequal objects with ignore fileds': function (test) {
        var o1 = {apa: 'Apa', bepa: 'Bepa'};
        var o2 = {apa: 'Apa', cepa: 'Ignore me', bepa: 'Bepa'};

        test.ok(compareObjects(o1, o2, ['cepa']));
        test.done();
    }
};