how to pass the dynamic variable to setInterval me

2020-05-09 22:12发布

i want to refresh/reload the method in every 30 seconds. but im not able to send the variable data to another function i.e setInterval.how to pass variable in the setInterval method.while adding static variable its working but how can i pass the id to setInterval method

 var app = angular.module('PIR_Detection', []);
    app.controller('myCtrl', function ($scope, $http, $window) {
        $scope.sel_val = 0;
        $scope.DefaultLabel = "Loading.....";
        var post = $http({
            method: "get",
            url: "../data.json",
            dataType: 'json',
            data: {},
            headers: { "Content-Type": "application/json" }
        });
        post.success(function (data, status) {
            $scope.Customers = data;
        });
        post.error(function (data, status) {
        });

        $scope.getPIRData = function (id) {
            var url = "/PIRDetails/GetPIRStatus/" + id;


            $http.get(url)
                .then(function (response) {
                    $scope.myWelcome = response.data;
                    $scope.pirstatus = base64toHEX($scope.myWelcome.dataFrame);
                    $scope.timestamp = getIST (response.data.timestamp);
                    $scope.rssi = response.data.rssi;
                    deviceid = id;

                });
        };
        setInterval(function () {
            $scope.getPIRData("100010102");//unable to pass id here
        }, 30000) 

});

2条回答
姐就是有狂的资本
2楼-- · 2020-05-09 22:43

Courtesy of @tvanfosson:

You probably want to have a function that creates the interval timer for you. Pass in the parameter to the function so its value is captured in the function closure and retained for when the timer expires.

function createInterval(f,dynamicParameter,interval) { setInterval(function() { f(dynamicParameter); }, interval); }

Then call it as createInterval(funca,dynamicValue,500); Obviously you can extend this for more than one parameter. And, please, use more descriptive variable names. :)

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家丑人穷心不美
3楼-- · 2020-05-09 22:56

you can do it in various way,

example:

//set data
window.deviceId=Id

and use it in settimout

setInterval(function () {
            $scope.getPIRData(window.deviceId);//unable to pass id here
        }, 30000)

but you can declare any global variable of the settimeout outer scope, then that variable will be available into the settimeout call back function, because then it will be treated as Closures

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