Question

My Object

How to remove keys like UserID, UserName from it… i mean selected keys… delete operator is not working in my case.

for (i=0 i <obj.length; i ++) {
    delete obj[i]['keyName']; 
}

The above does not work, neither throws an error. Any other way…

Answer 1

How about this solution….

Array.prototype.containsValue = function (value) {
        for (var k in this) {
            if (!this.hasOwnProperty(k)) {
                continue;
            } //skip inherited properties
            if (this[k] == value) {
                return true;
            }
        }
        return false;
    };

for (var key in Object) {
    var unwantedKeys = ['UserName', 'UserID'];
    if (unwantedKeys.containsValue(key)) continue;
    // Play with your Object it won't contain these unwanted keys.
}

Delete should work, i am not sure about the mistake you are doing..

http://jsfiddle.net/spechackers/43hTD/