Array.prototype.Contain = function (item) {
            var arr = this;
            if (arr == null || arr.length == 0) {
                return false;
            }

            for (var i = 0; i < arr.length; i++) {
                if (arr[i] == item) {
                    return true;
                }
            }

            return false;
        }

        Array.prototype.Remove = function (item) {
            var index = -1;

            for (var i = 0; i < this.length; i++) {
                if (this[i] == item) {
                    index = i;
                    break;
                }
            }
            if (index != -1) {
                 this.splice(index, 1);
            }
        }

 

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