将对象推入数组擦除而不是添加

I have a function like this :

我有这样的功能：

$scope.saveSearch = function () {
    var alreadyExist = false;
    for (var i = 0; i < $scope.savedSearch.length; i++) {
        if (JSON.stringify($scope.searched) === JSON.stringify($scope.savedSearch[i])) {
            alreadyExist = true;
            break;
        }
    }
    if (!alreadyExist) {
        $scope.savedSearch.push($scope.searched);
        localStorage.setItem("savedSearch", JSON.stringify($scope.savedSearch));
    }
};
$sco