Angularjs 10 $digest() 迭代达到 [英] Angularjs 10 $digest() iterations reached

问题描述

我有这样的代码:

$scope.flags = [];

$scope.$watch('selectedFilter', function() {    
            for (var i = 0; i < 2; i++) {
                $scope.flags.push(i);
            }    
    });

$scope.$watch('flags', function(oldval, newval) {

                    if (oldval != newval) {

                        console.log("hello");
                    }

                });

但我得到错误:

10 $digest() iterations reached. Aborting!

这是为什么?我怎样才能解决这个问题?请注意，这是我尝试做的事情的过度简化:)

Why is this ? And how can I come around this problem ? Note this is oversimplification of what I am trying to do :)

推荐答案

我想指出的一点是，当您观察列表的变化时，应该将第三个参数设置为 true.

One thing I want to point out is when you watch the change of a list, you should set the 3rd parameter to true.

$scope.$watch('flags', function (oldval, newval) {
    if (oldval != newval) {
        console.log("hello");
    }
}, true); 

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