Delete multiple object properties?

Question

I create an object with multiple properties -

var objOpts = {
  option1: \'Option1\',
  option2: \'Option2\',
  option2: \'Option3\'
};

I t

Answer 1

var obj = {"key1":1,"key2":2,"key3":3,"key4":4};

if (!('multidelete' in Object.prototype)) {
Object.defineProperty(Object.prototype, 'multidelete', {
    value: function () {
        for (var i = 0; i < arguments.length; i++) {
            delete this[arguments[i]];
        }
    }
});
}

obj.multidelete("key1","key3");

You can use it like this to delete multiple keys in object