如何在angularjs的开关盒内使用for循环？

Question

I have speech recognition using switch case, and this is the code:

$scope.recog = function() {
    var recognition = new SpeechRecognition();
    recognition.onresult = function(event) {
    $scope.filteredItems = $filter('filter')(datauser['data']['friends'], {nama : search}, false);

    var result = event.results[0][0].transcript;
        switch(result){
        case 'login':
        $scope.loginFn();
            break;
        case 'sign up':
        $location.path('/register');
            break;
        case 'register':
        $scope.registerFn();
            break;
        case 'cancel':
        $scope.cancelregisterFn();
            break;
        //for (var i = 1; i < $scope.filteredItems.length; i++){
        case 'chat with friend number ' + i:
        $scope.chatWith(friend.userid , friend.nama);
            break;
        //}
        case 'go to home':
        $location.path('/home');
            break;
        case 'go to add friend':
        $location.path('/addfriend');
            break;
        case 'go to friend request':
        $location.path('/friendrequest');
            break;
        case 'go to pending request':
        $location.path('/penddingrequest');
            break;
        case 'add':
        $scope.addfriends();
            break;
        case 'send':
        $scope.sendMessage();
            break;
        default:
        alert(result);
        alert(i);
            break;
    };
    $scope.$apply()
    };
    recognition.start();
  };

but, I want to use for as loop in one case, as you can see I already made it as command, but when I delete the // it cannot work in my application. can I use for loop inside the switch case? I use the loop is for like this:

for (var i = 1; i < $scope.filteredItems.length; i++){
            case 'chat with friend number ' + i:
            $scope.chatWith(friend.userid , friend.nama);
                break;
}

so, in the case i use i fron the loop. is it already detail?

EDIT

the i that I will use in case 'chat with friend number ' + i: is the length of index from the friend list, and all user have different amount of friends, so I cant put exact number, like 5 or 6, I must use i < $scope.filteredItems.length for the total of friends.

Answer 1

Based on comment that you are trying to create dynamic switch cases inside a loop that will not work.

What you could do is remove that whole scenario from switch something like:

if (result && result.indexOf('chat with friend number') > -1) {
  // do what is needed for this case with your loop

} else {
  switch (result) {
    // all the other cases shown
  }

}

Answer 2

You can try something like this:

switch(result){
  case:
    .
    .
    .
  case default:
    var text = "chat with friend number";

    // Search if result is of type "chat with friend number" and find friend number.
    var friend_no = result.indexOf(text)>-1?parseInt(result.replace(text,'')):-1
    if(friend_no>-1){
      // do your stuff
    }
}

Note: above will evaluate all cases first. If probability of this is too high, you should try @charlietfl's approach.