$scope.$watch(var,function)undefined不是函数

我有这个错误:"undefined不是函数"在尝试将范围添加到范围时出现.

我找不到错误.也许我只是盲目地盯着这个错误很久了.为什么在范围内明确定义$ watch方法时会出现未定义的函数错误？

chColorPicker.controller('chColorPickerCtrl', function ($scope,$document,$element) {


    $scope.init = function (event)
    {

    }

    var colorObject = {
        r:'0', 
        g:'0', 
        b:'0', 
        hex:'#000000'
    };
    $scope = colorObject;
    $scope.Z1;
    $scope.Z2;

    var OnChangeColor= function(newValue,oldValue)
    {
        console.log('change');
    }

    $scope.$watch("r",onChangeColor); //<-- the error appears here.
});

Bhojendra Ra.. 7

你正在改变$ scope:

$scope = colorObject;//error in this line

因此,当你使用$ scope时会出现错误.$ watch()因为它不再调用angular的$ scope.

你正在改变$ scope:

$scope = colorObject;//error in this line

因此,当你使用$ scope时会出现错误.$ watch()因为它不再调用angular的$ scope.