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My code logic is as follows, I want to implement it:

1. Click the query button to turn on the timer. The button text changes to Stop Query,

2. Click to stop query and cancel the schedule

$scope.submitRequest = function () {
    if ($scope.onlyButton == "查詢") {
         $scope.onlyButton = "停止查詢";
            $interval(function()
                {
                    //具體方法
                }
                ,5000);
            }
    else{
         setTimeout(function(){
            $scope.onlyButton = "查詢";
            $interval.cancel(stop);
            },0)
        };
    }
    

But I failed to cancel the timer, please help...