Angular控制器调用函数提示未定义错误求助

Hey there! Let's get that "函数未定义" error sorted out for you. The root cause here is pretty straightforward: when you define a function on $scope in an Angular controller, you can't call it directly by name inside the controller—you need to reference it through the $scope object.

问题分析 #

You defined $scope.findprojectBarcode as your lookup function, but when you tried to call it in $scope.postRequest, you used findprojectBar... (without the $scope. prefix). Since the function isn't in the controller's local scope (it's attached to the $scope object), JavaScript can't find it, hence the error.

修正后的代码示例 #

Here's how to adjust your postRequest function to call the lookup correctly:

$scope.findprojectBarcode = function (p) {
    var prjBarCode = "";
    var i = 0;
    for (i = 0; i < $rootScope.projectList.value.length; i++) {
        if ($rootScope.projectList.value[i].Name === p) {
            console.log($rootScope.projectList.value[i].Name);
            return $rootScope.projectList.value[i].Barcode;
        }
    }
    return prjBarCode;
};

$scope.postRequest = function () {
    // 替换成你要传入的实际项目名称参数
    var targetProject = "Your Target Project Name";
    // 关键：通过$scope调用自定义函数
    var prjCode = $scope.findprojectBarcode(targetProject);
    
    // 后续的POST请求逻辑...
};

额外提示 #

If you were calling this function from your Angular view (like in an ng-click directive), you could use just findprojectBarcode() directly—Angular automatically looks up functions on the $scope for view bindings. But inside the controller itself, you have to explicitly reference $scope to access those functions.

内容的提问来源于stack exchange，提问作者trx